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Genesys Logic, Inc.
GL652USB
USB 7 PORT HUB CONTROLLER
DATA SHEET, Version 1.2
Aug. 18, 2000
Genesys Logic, Inc. 10F, No.11, Ln.3, Tsao Ti Wei, Shenkeng, Taipei, Taiwan Tel: 886-2-2664-6655 Fax: 886-2-2664-5757 http://www.genesyslogic.com
GL652USB 7 PORT USB HUB CONTROLLER
1
FEATURES
* High performance and low-cost solution for USB hub * USB Specification Compliance *
* * * * * * * * * * * * * *
- Conforms to USB specification Rev. 1.1 - Supports 1 device address and 2 endpoints 8-bit micro-processor - RISC-like architecture - USB optimized instruction set - Single cycle instruction execution - Operation Speed: DC to 24 MHz clock input - Performance: 12 MIPS @ 24MHz I/O ports - 7-port hub Internal memory - 64 bytes of RAM - 1.75K x 14 of program ROM On-chip 3.3v output - No external regulator required Integrated USB transceiver 12 MHz external clock Improved output drivers with slew-rate control to reduce EMI Internal power-on reset(POR) Internal power-fail detector for ESD recovery Support suspend/normal mode power management Support power management for downstream port devices Automatic switching between self/bus powered mode Smart LED traffic indicator - The higher data traffic flows through one port, the higher frequency that port's LED will blink. Applications: - Stand-alone USB hub - PC motherboard USB hub 48 pin LQFP package
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GL652USB 7 PORT USB HUB CONTROLLER
2
FUNCTION OVERVIEW
The GL652USB is an 8 port USB hub with 1 upstream port and 7 downstream ports. It uses an 8-bit RISC-like uC to encode/decode the host commands. The GL652USB is designed mainly for stand-alone hub and can also be integrated in PC mo therboard or any other devices to support USB hub function. The GL652USB can switch between selfpower and bus-power automatically without re-plug in. The GL652USB can be configured as individual mode or ganged mode for the power management of downstream port devices. To prevent from abnormal current consumption of downstream port devices, the GL652USB supplies power enable flags by reading the over-current flags. The GL652USB supports smart traffic indication through the LED lighting. The higher data traffic flows through one port, the higher frequency of that port's LED blinks. To minimize the power consumption, the GL652USB will turn LED off and stop the clock when they are suspended. 3
l
PIN DEFINITIONS AND DESCRIPTIONS
GL652USB Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Name DP0 DM0 AGND DP7 DM7 DP1 DM1 DP6 DM6 DP4 DM4 AVCC DP2 DM2 VCP DP5 DM5 DP3 DM3 SUSPND SELF LED1 LED2 LED3 RESET LED4 OVCUR4# LED5 I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O O I O O O I O I O Description Upstream port USB data+ Upstream port USB dataAnalog ground Downstream port 7 USB data+ Downstream port 7 USB dataDownstream port 1 USB data+ Downstream port 1 USB dataDownstream port 6 USB data+ Downstream port 6 USB dataDownstream port 4 USB data+ Downstream port 4 USB dataAnalog VCC(5V) Downstream port 2 USB data+ Downstream port 2 USB data3.3V output Downstream port 5 USB data+ Downstream port 5 USB dataDownstream port 3 USB data+ Downstream port 3 USB dataSuspend indication output 1: SELF-powered. 0: INDIVIDUAL-powered LED traffic indicator for downstream port 1 LED traffic indicator for downstream port 2 LED traffic indicator for downstream port 3 Reset input LED traffic indicator for downstream port 4 Over current flag for downstream port4 LED traffic indicator for downstream port 5
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GL652USB 7 PORT USB HUB CONTROLLER
29 PWRENB4# O Power enable for downstream port 4 30 LED6 O LED traffic indicator for downstream port 6 31 PWRENB6# O Power enable for downstream port 6 32 TEST I Test mode input 33 OVCUR6# I Over current flag for downstream port6 34 XTAL2 O Ceramic resonator or crystal out 35 XTAL1 I Ceramic resonator or crystal in 36 DGND Digital ground 37 PWRENB3# O Power enable for downstream port 3 38 OVCUR3# I Over current flag for downstream port3 39 LED7 O LED traffic indicator for downstream port 7 40 OVCUR7# I Over current flag for downstream port7 41 DVCC Digital VCC(5V) 42 OVCUR5# I Over current flag for downstream port5 43 PWRENB5# O Power enable for downstream port 5 44 PWRENB2# O Power enable for downstream port 2 45 PWRENB7# O Power enable for downstream port 7 46 OVCUR2# I Over current flag for downstream port2 47 PWRENB1# O Power enable for downstream port 1 48 OVCUR1# I Over current flag for downstream port1 Note 1: "#" means low active Note 2: If using crystal, TEST pull low. If using oscillator, TEST pull high. Table 1 GL652USB Pin Definitions and Descriptions
48
47
46
45
44
43
42
41
40
39
38 OVRCUR3#
GL652USB GL650USB
PWRENB1#
PWRENB7#
PWRENB2#
PWRENB5#
1 2 3 4 5 6 7 8 9 10 11 12
PWRENB3#
OVRCUR1#
OVRCUR2#
OVRCUR5#
OVRCUR7#
DVCC
LED7
37
DP0 DM0 AGND DP7 DM7 DP1 DM1 DP6 DM6 DP4 DM4 AVCC
DGND XTAL1 XTAL2
36 35 34 33 32 31 30 29 28 27 26 25
OVRCUR6# TEST PWRENB6# LED6 PWRENB4# LED5 OVRCUR4# LED4 SUSPND RESET SELF LED1 LED2 23 LED3 24
VCP
DP2
DP5
DM2
DM5
DP3 18
13
14
15
16
17
19
DM3
20
21
22
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GL652USB 7 PORT USB HUB CONTROLLER
4
BLOCK DIAGRAM
UPSTREAM PORT
12 MHz
D+
TRANSCEIVER
D-
PLL SIE Registers
HUB REPEATER MicroController
PORT CONTROLLER
PORT CONTROLLER
ROM
TRANSCEIVER TRANSCEIVER
RAM
D+
D-
LED
D+
D-
LED
DOWNSTREAM PORT 1
DOWNSTREAM PORT 7
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GL652USB 7 PORT USB HUB CONTROLLER 5 REGISTER SUMMARY
MNEMONIC DEVCTL EVTFLG RXCTL0 TXCTL0 TXCTL1 FFDAT BUFCTL PORTSEL HUB_STAT_CHG PORT_STATUS BUS_PORT_DATA HOST_CMD ENP1_IND TRXFLAG LED_INIT GPIOD REV DEVSTUS OFFSET 00h 01h 02h 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh 0Ch 0Dh 0Eh 0Fh 10h 11h DESCRIPTION Device control register USB function interrupt flag Endpoint 0 RX control Endpoint 0 TX control Endpoint 1 TX control Data buffer (FIFO) I/O port Data buffer control register Hub port to be configured Hub status and status change indicator Hub ports status indicator Hub ports status change indicator Host command to downstream ports Endpoint 1 indicator Downstream port traffic flag LED initial state General purpose I/O pin status Chip revision USB device address and configuration status
Register Description
Terminology: R/O: R/W: R/W1C: W/O: read only read / write read / write "1" to clear write only
DEVCTL R/W USBRDY
( offset 00, default = 00h ) R/W R/W R/O R/O SFRAME ---SELF GANG PWRDN USBRDY : 0 - USB interface is not ready. The device drives USB with SE0. 1 - USB interface is ready. The device stops driving USB with SE0. After power-on reset, USBRDY is cleared and the device looks like disconnected. Set USBRDY to `1' to enable USB interface. SFRAME : short frame option for test purpose Set SFRAME to `1' will shorten frame length to 1/15 ms. It is to shorten the time required for test. PWRDN : power down mode In suspend state, firmware can set PWRDN to put the controller into power down mo de. In this mode, the embedded micro-controller and most internal activities are frozen. Hardware will automatically clear PWRDN upon hardware reset or resume activities occur.
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GL652USB 7 PORT USB HUB CONTROLLER
SELF GANG : 0 - HUB is bus powered. 1 - HUB is self powered. : 0 - HUB is in individual mode. 1 - HUB is in ganged mode.
EVTFLG R/W1C
USBRST Interrupt event flag - EP0RX : a SETUP or OUT transaction to endpoint 0 is accepted EP0TX : USB host controller accepts data transmitted via endpoint 0. EP1TX : USB host controller accepts data transmitted via endpoint 1 SUSPD : the controller goes into suspend state WAKEUP : remote wakeup is detected when global suspended SOF : SOF detected or generated by HUB timer. C_LCPWR : POWER source change. USBRST : End of USB reset
R/W1C SOF
( offset 01, default = 00h ) R/W1C R/W1C C_LCPWR WAKEUP
R/W1C SUSPD
R/W1C EP1TX
R/W1C EP0TX
R/W1C EP0RX
RXCTL0 ( offset 02, default = 40h ) R/W R/O R/O R/O R/O R/O R/O R/O RXDIS RXSETUP RXOUT RXSEQ RXCNT3 RXCNT2 RXCNT1 RXCNT0 Status of endpoint 0 receiving - RXCNT3~0 : EP0 received data byte count. RXSEQ : 1 - The received data PID is DATA1 0 - The received data PID is DATA0 RXOUT : 1 - The received token PID is OUT. RXSETUP : 1 - The received token PID is SETUP. RXDIS : 0 - Endpoint 0 FIFO is empty and ready for data-packet receiving. 1 - Endpoint 0 FIFO is filled with data and will reject the new-coming data packet. If RXDIS = 1, the device will not accept an OUT transaction addressed to it, and will respond with a NAK to an error-free transaction. Hardware will automatically set RXDIS after a successful receiving. After processing, the micro-controller should clear RXDIS to enable next data-packet receiving or free FF0 for filling of the data to transmit. Note that a SETUP transaction addressed to the device is always accepted even though RXDIS = 1. TXCTL0 ( offset 03, default = 00h ) R/W R/W R/W R/W R/W R/W R/W -EP0STL EP0OE EP0SEQ EP0CNT3 EP0CNT2 EP0CNT1 EP0CNT0 Endpoint 0 transmit setting - EP0CNT3~0 : number of data bytes to transmit EP0OE : enable data transmit 1 - ready to transmit data packet 0 - not ready to transmit data packet (default) EP0SEQ : data packet type 0 -DATA0 1 -DATA1 EP0STL : set endpoint 0 stall 1 - EP0 will respond to USB host controller with STALL packet EP0STL will be automatically cleared when a setup transaction is accepted.
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GL652USB 7 PORT USB HUB CONTROLLER
After filling the data-to-transmit into FF0, the micro-controller should setup this register to enable endpoint 0 data transmit. If EP0OE = 0, endpoint 0 will respond to a valid IN transaction with a NAK. EP0OE will be automatically cleared after a successful transmission, or when endpoint 0 has incidentally accepted another SETUP or OUT transaction. TXCTL1 ( offset 04, default = 00h ) R/W R/W R/W R/O R/O R/O R/W -EP1STL EP1OE EP1SEQ EP1CNT3 EP1CNT2 EP1CNT1 EP1CNT0 Endpoint 1 transmit setting - EP1CNT3~0 : number of data bytes to transmit. EP1CNT3~1 are always `0'. EP1OE : enable data transmit 1 - ready to transmit data packet 0 - not ready to transmit data packet (default) EP1SEQ : data packet type 0 -DATA0 1 -DATA1 EP1STL : set endpoint 1 stall 1 - EP1 will respond to USB host controller with STALL packet 0 - default After preparing the data to transmit, the micro-controller should setup this register to enable endpoint 1 data transmit. If EP1OE = 0, endpoint 1 will respond to a valid IN transaction with a NAK. After a successful transmission, the device will automatically clear EP1OE.
FFDAT ( offset 05, default = 00h ) R/W R/W R/W R/W R/W R/W R/W R/W FFD7 FFD6 FFD5 FFD4 FFD3 FFD2 FFD1 FFD0 If FFSEL1 (in BUFCTL) = 1'b0, this is FF0 access-window; if FFSEL1 = 1'b1, this is FF1 access-window. Each FFDAT read/write will automatically increase the FIFO pointer, which is a 3-bit circular counter, by 1. Writing FPRST with `1' (in BUFCTL) will reset the pointer. Note that to fill FF0, RXDIS (in RXCTL0) must be first cleared. BUFCTL -( offset 06 ) ----Data buffer control - FFSEL1 : FIFO 0/1 selector 1'b0 - select endpoint 0 data buffer 1'b1 - select endpoint 1 data buffer FPRST : reset FIFO 0/1 pointer (write only) W/O FPRST -R/W FFSEL1
PORTSEL --
( offset 07, default = 00h ) R/W R/W R/W R/W R/W PORTSEL PORTSEL PORTSEL PORTSEL PORTSEL 7 6 5 4 3 PORTSEL : PORT 1~7 under request PORTSEL1 1'b1 - port 1 selected PORTSEL2 1'b1 - port 2 selected PORTSEL3 1'b1 - port 3 selected PORTSEL4 1'b1 - port 4 selected PORTSEL5 1'b1 - port 4 selected PORTSEL6 1'b1 - port 4 selected PORTSEL7 1'b1 - port 4 selected
R/W PORTSEL 2
R/W PORTSEL 1
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GL652USB 7 PORT USB HUB CONTROLLER
HUB_STAT_CHG ( offset 08, default = 00h ) R/O R/O R/O R/O LCPWR OVCUR ----C_LCPWR C_OVCUR HUB status and status change LCPWR : HUB local power status 1'b0 - local power good 1'b1 - local power lost OVRCUR : HUB over current indicator 1'b0 - No over-current condition currently exists 1'b1 - A hub over-current condition exists C_LCPWR : Local power status change 1'b0 - No change has occurred to local power status 1'b1 - local power status has changed C_OVRCUR : HUB over current indicator change 1'b0 - No change has occurred to the over-current indicator 1'b1 - Hub over-current indicator has changed PORT_STATUS ( offset 09, default = 00h ) R/O R/O R/O R/O R/O R/O R/O PT_LOW_ PT_PWR -PT_RST PT_OVCU PT_SUS PT_EN PT_CON SPD R Port status indicator: PT_LOW_SPD : 1'b0 - full speed device connected, 1'b1 - low speed device connected PT_PWR : 1'b0 - port is in power off state, 1'b1 - port is not in power off state PT_RST : 1'b0 - Reset signaling not asserted, 1b'1 - Reset signaling asserted PT_OVCUR : 1'b0 - No over-current condition occurred on this port 1'b1 - An over-current condition exists on this port PT_SUS : 1'b0 - port not suspended, 1'b1 - port suspended or resuming PT_EN : 1'b0 - port is disabled, 1'b1 - port is enabled PT_CON : 1'b0 - No device is present, 1'b1 - A device is present on this port BUS_PORT_DATA R/O R/O VP VM ( offset 0A, default = 00h ) R/O -C_PT_RST
R/O R/O R/O R/O C_PT_ C_PT_ C_PT_EN C_PT_ OVCUR SUS CON Bus state and Port status change indicator: VP : VP state on the downstream port VM : VM state on the downstream port C_PT_RST : 1'b0 - No change, 1'b1 - Reset complete C_PT_OVCUR : 1'b0 - No change has occurred to over-current indicator 1'b1 - over-current indicator has changed C_PT_SUS : 1'b0 - No change, 1'b1: - Resume complete C_PT_EN : Set to one when a port is disabled because of a Port_error condition C_PT_CON : 1'b0 - No change has occurred to current connect status 1'b1 - Current connect status has changed
HOST_CMD ( offset 0B, default = 0Fh ) W/O W/O W/O W/O W/O W/O W/O W/O HB_CMD3 HB_CMD2 HB_CMD1 HB_CMD0 PT_CMD3 PT_CMD2 PT_CMD1 PT_CMD0
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GL652USB 7 PORT USB HUB CONTROLLER
Host command to the hub: PT_CMD3~0 : 4'h0 -SetPortFeature(PORT_SUSPEND) : 4'h1 -SetPortFeature(PORT_RESET) : 4'h2 -SetPortFeature(PORT_POWER) : 4'h3 -ClearPortFeature(PORT_ENABLE) : 4'h4 -ClearPortFeature(PORT_SUSPEND) : 4'h5 -ClearPortFeature(PORT_POWER) : 4'h6 -ClearPortFeature(C_PORT_RESET) : 4'h7 -ClearPortFeature(C_PORT_OVER_CURRENT) : 4'h8 -ClearPortFeature(C_PORT_SUSPEND) : 4'h9 -ClearPortFeature(C_PORT_ENABLE) : 4'hA -ClearPortFeature(C_PORT_CONNECTION) HB_CMD3 : 1'b1 -SetHubFeature(C_HUB_LOCAL_POWER) HB_CMD2 : 1'b1 -SetHubFeature(C_HUB_OVER_CURRENT) HB_CMD1 : 1'b1 -ClearHubFeature(C_HUB_LOCAL_POWER) HB_CMD0 : 1'b1 -ClearHubFeature(C_HUB_OVER_CURRENT) ENP1_IND R/O PT7 ( offset 0C, default = 00h ) R/O R/O R/O PT6 PT5 PT4 Endpoint 1 interrupt change indicator
R/O PT3
R/O PT2
R/O PT1
R/O HUB
TRXFLAG
( offset 0D, default = 00h ) R/W1C R/W1C R/W1C R/W1C R/W1C R/W1C -P7_TRX P6_TRX P5_TRX P4_TRX P3_TRX P2_TRX Upstream traffic flag: P1_TRX : upstream traffic happens on downstream port 1 P2_TRX : upstream traffic happens on downstream port 2 P3_TRX : upstream traffic happens on downstream port 3 P4_TRX : upstream traffic happens on downstream port 4 P5_TRX : upstream traffic happens on downstream port 5 P6_TRX : upstream traffic happens on downstream port 6 P7_TRX : upstream traffic happens on downstream port 7
R/W1C P1_TRX
LED_INIT
( offset 0E, default = 00h ) R/W1C R/W1C R/W1C R/W1C R/W1C R/W1C R/W1C -P7_ON P6_ON P5_ON P4_ON P3_ON P2_ON P1_ON LED initial flag: P1_ON : if 1'b1, LED is always on, otherwise, judge according to TRXFLAG register. P2_ON : if 1'b1, LED is always on, otherwise, judge according to TRXFLAG register. P3_ON : if 1'b1, LED is always on, otherwise, judge according to TRXFLAG register. P4_ON : if 1'b1, LED is always on, otherwise, judge according to TRXFLAG register. P5_ON : if 1'b1, LED is always on, otherwise, judge according to TRXFLAG register. P6_ON : if 1'b1, LED is always on, otherwise, judge according to TRXFLAG register. P7_ON : if 1'b1, LED is always on, otherwise, judge according to TRXFLAG register.
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GL652USB 7 PORT USB HUB CONTROLLER
GPIOD (offset 0F, default = 0Fh) R/W R/W R/W R/W R/W R/W R/W -GPIO6D/ GPIO4D/ GPIO3D/ GPIO2D/ GPIO1D/ GPIO0D/ GPIO5D/ LED7 LED5 LED4# LED3# LED2# LED1# LED6 General purpose I/O pin status - If GPIOXOE = 1 (X: 0 ~ 6), GPIOX is driven with the level of internal GPIOXD latch, which is the same as corresponding GPIOXD bit. If GPIOXOE = 0, GPIOXD reflects the level of GPIOX pin, which may be different from internal GPIOXD latch. The value written to GPIOD will be stored in an internal latch, no matter what direction the GPIOX pins are in. Bits 6 to 0 have been pre-assigned specific functions for LED indicators. (active low). ( offset 10, default = current revision ) R/O R/O R/O R/O R/O R/O REV6 REV5 REV4 REV3 REV2 REV1 This register returns current silicon revision number of the HUB. Current revision is 8'h11. (Revision 1.1)
REV R/O REV7
R/O REV0
DEVSTUS ( offset 11, default = 00h ) R/W R/W R/W R/W R/W R/W R/W R/W HCONFIG DEVADR6 DEVADR5 DEVADR4 DEVADR3 DEVADR2 DEVADR1 DEVADR0 USB device status registers. Procedure to set the device address: 1. After USB reset, the device responds to default address 0, and hub configuration = 0. 2. USB host controller issues SET_ADDRESS request to the device. (INTRB asserted) 3. Micro-controller recognizes the request, then set DEVADR register with appropriate value. 4. Micro-controller prepares the status stage of SET_ADDRESS request by programming TXCTL0 register. 5. When the hub configuration value is not equal zero, HCONFIG is set to one. USB reset will clear this register.
6
MAXIMUM RATINGS
Maximum ratings are the extreme limits to which the GL652USB can be exposed without permanently damaging it. The GL652USB contains circuitry to protect the inputs against damage from high static voltages; however, do not apply voltages higher than those shown in the table. Keep VIN and VOUT within the range GND (VIN or VOUT) VCC. Connect unused inputs to the appropriate voltage level, either GND or VDD . Symbol TSTG TOP VCC VIN I IMGND IMVCC VESD Characteristic Storage temperature Operating temperature Supply voltage DC input voltage Maximum current per pin excluding VDD and VSS Maximum current out of GND Maximum current out of VCC Static discharge voltage Value -55 to +150 0 to +70 -0.5 to +7.0 -0.5 to +VDD + 0.5 25 100 100 >4000 Unit C C V V mA mA mA V
7
ELECTRICAL CHARACTERISTICS
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GL652USB 7 PORT USB HUB CONTROLLER
Symbol Parameter Supply VDD Digital Power Supply VDDA Analog Power Supply IDD Digital Supply Current IDDA Analog Supply Current USB Bus: DP and DM VCP Regulated Voltage Output VDI Static Input Voltage VDO Static Output Voltage Digital I/O Pins VIL Input Logic Low Voltage VIH Input Logic High Voltage VOL Output Logic Low Voltage VOH Output Logic High Voltage Tese Conditions Min. 4.5 4.5 Typ. 5.0 5.0 Max. 5.5 5.5 Unit V V mA mA V V V V V V V
3.0 0 0 2.0 0.9xVDD
3.3 -
3.6 VCP VCP 0.8 0.1xVDD -
IO =-4.0mA IO =+4.0mA
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GL652USB 7 PORT USB HUB CONTROLLER
8
PACKAGE DIAGRAM
48-LQFP SYVBOIS A A1 A2 C1 D D1 E E1 e b L L1
D D1
MIN 0.05 1.35 0.09 9.00BSC 7.00BSC 9.00BSC 7.00BSC 0.5BSC 0.17 0.45 1 REF
MAX 1.6 0.15 1.45 0.16
0.27 0.75
E
0.25
E1
L L1
b e
C1
A2
A
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A1
A
B
C
D
E
9. Application Circuits (1)
4 4
PWRENB1#
PWRENB2#
PWRENB5#
PWRENB3#
B_VCC OVRCUR1#
OVRCUR5#
OVRCUR3#
OVRCUR2#
OVRCUR7#
PWRENB7#
R1
1M LED1 D1 LED LED2 D2 LED LED3 D3 LED R4 1K VOUT3 R5 1K VOUT4 R7 1K VOUT5 R8 1K VOUT6 R9 1K VOUT7 R3 1K VOUT2 R2 1K VOUT1
C1 0.1U U1
LED7
C2 30P
Y1 12 MHz C3 30P
48
47
46
45
44
43
42
41
40
39
38 OVRCUR3#
PWRENB1#
PWRENB7#
PWRENB2#
PWRENB5#
LED7
DP0 DM0
1 2 3
PWRENB3#
OVRCUR1#
OVRCUR2#
OVRCUR5#
OVRCUR7#
DVCC
37
DP0 DM0 AGND DP7 DM7 DP1 DM1 DP6 DM6 DP4 DM4 AVCC
DGND XTAL1 XTAL2
36 35 34 33 32 LED 31 30 29 28 27 26 25 R10 10K PWRENB6# LED6 LED6 LED PWRENB4# LED7 LED5 LED OVRCUR4# LED4 B_VCC B_VCC D7 D6 XTAL1 LED4 R6 24 LED OVRCUR6# LED5 D5
3
D4
3
DP7 DM7 DP1 DM1 DP6 DM6 DP4 B_VCC DM4 C4 0.1U
4 5 6 7 8 9 10 11 12
OVRCUR6# TEST PWRENB6# LED6 PWRENB4# LED5 OVRCUR4# LED4 SUSPND RESET LED1 LED2 23 LED3 24 SELF 21
DM2
DM5
13
14
15
16
17
18
19
DM3
VCP
DP2
DP5
DP3
20
C6
2
C5 4.7U
+
2
0.1U
LED1
22
LED2
GL652USB VCP SUSPEND
SELF
LED3
DP2
DM2
DM5
DP3
DP5
DM3
R11
1M
1
1
Title CIRCUIT FOR GENESYS 7-PORT USB HUB Size B Date:
A B C D
Document Number USBHUB.DSN Thursday, August 17, 2000 Sheet
E
Rev 1.2 1 of 4
A
B
C
D
E
9. Application Circuits (2)
S_VCC PWRENB1# FLG1# R16 B_VCC 4.7K S PWRENB2# Q1 TP0610T D 2N7002 R17 U3 1M R18 4.7K VCC VCC U4 PWRENB3# C11 J1
3
VCC B_VCC B_VCC
C7
4
R12 10K FLG1# R14 10K OVRCUR1# C8 0.1U FLG2#
R13
4
U2 1 2 3 4 ENA# FLGA# FLGB# ENB# OUTA# IN GND OUTB# 8 7 6 5 VOUT2 VOUT1 0.1U 10K OVRCUR2# C9 R15 10K 0.1U
FLG2#
D
G
MIC2526-8 MIC 29302 VCC B_VCC REN S_VCC C12 47U R21 R24 267K,%1 PWRENB4# 4 825K,%1 1 2 3 4 5 B_VCC
Q2 G S
C10 1 2 3 ENA# FLGA# FLGB# ENB# OUTA# IN GND OUTB# 8 7 VOUT3 0.1U FLG3#
R19 10K OVRCUR3# C14 R22 10K 0.1U FLG4#
R20 10K OVRCUR4# C15 R23 10K 0.1U
3
C13 FLG3# 0.1U FLG4#
0.1U
6 5 VOUT4
POWER JACK A 6V adapter is recommended.
MIC2526-8
VCC B_VCC B_VCC
C16 U5 PWRENB5# FLG5# FLG6# PWRENB6#
2
R25 10K FLG5# C17 R27 10K OVRCUR5# 0.1U FLG6#
R26 10K OVRCUR6# C18 R28 10K 0.1U
1 2 3 4
ENA# FLGA# FLGB# ENB#
OUTA# IN GND OUTB#
8 7 6 5
VOUT5
0.1U
VOUT6
2
MIC2526-8 MIC 29302 VCC U6 Q3 FDN340P G D D R30 VCC D 1M G R31 R32 267K,%1 825K,%1 B_VCC S S Q5 2N7002 U7 PWRENB7# FLG7# 1 2 3 B_VCC 4 ENA# FLGA# FLGB# ENB# OUTA# IN GND OUTB# 8 7 R34 10K 6 5 0.1U VOUT7 0.1U FLG7# C20 10K OVRCUR7# C19 R33 G REN Q4 2N7002 SELF R29 470 VCC B_VCC S REN S_VCC 1 2 3 4 5
MIC2526-8
1 1
Title CIRCUIT FOR GENESYS 7-PORT USB HUB Size Custom Date:
A B C D
Document Number USBHUB.DSN Thursday, August 17, 2000
E
Rev 1.2 Sheet 2 of 4
A
B
C
D
E
9. Application Circuits (3)
VCP R35
4
B_VCC C21 + 1.5K L2 R38 22 R39 22 C25 47P 15K 15K L4 FB FB 10U L1 VOUT4 J3 1 2 3 4 USB-B + C22 120U L3 FB R40 R41 C23 0.1U DM4 DP4 R36 22 R37 22 FB J2 1 2 3 4 USB-A
4
DM0 DP0 C24 47P
L5 VOUT1 + C26 120U
3
FB C28 0.1U DM1 DP1 R42 22 R44 22
J4 1 2 3 4 USB-A VOUT5 + C27 120U
L6
FB C29 0.1U DM5 DP5 R43 22 R45 22
J5 1 2 3 4 USB-A
3
L7
FB R46 15K R47 15K
L8
FB R48 15K R49 15K
L9 VOUT2 + C30 120U L11
FB C32 0.1U FB R54 15K R55 15K DM2 DP2 R50 22 R52 22
J6 1 2 3 4 USB-A VOUT6 + C31 120U
L10
FB C33 0.1U DM6 DP6 R51 22 R53 22
J7 1 2 3 4 USB-A
L12
FB R56 15K R57 15K
2
2
L13 VOUT3 + C34 120U L15
FB C36 0.1U FB R62 15K R63 15K DM3 DP3 R58 22 R60 22
J8 1 2 3 4 USB-A VOUT7 + C35 120U
L14
FB C37 0.1U DM7 DP7 R59 22 R61 22
J9 1 2 3 4 USB-A
L16
FB R64 15K R65 15K
1
1
Title CIRCUIT FOR GENESYS 7-PORT USB HUB Size B Date:
A B C D
Document Number USBHUB.DSN Thursday, August 17, 2000 Sheet
E
Rev 1.2 3 of 4
A
B
C
D
E
9. Application Circuits (4)
4
4
Rev.
1.0 1. First Product Release 1.1 1. 2. 3. 4.
Description
Seperate 4-port and 7-port hubs into different schematic files. Omit the ganged mode pull-up resistor on 'SUSPND' pin. Add a 10K pull-up resistor to 'RESET' pin. Connect pin 1 of U3 to B_VCC, then regulator will be enabled only when upstream port is plugged! A 1M pull-low resistor is also added to disable this pin when the upstream port is not plugged.
Date
'00/04/05 '00/05/18
3
5. 'SELF' is directly connected to drain of Q4 to omit the external debounce RC circuit for this pin. 6. Q1 is replaced by a more popular and cheaper one -- FDN340P. 7. Some resistor values are increased to save the operating current.
3
1.2
1. Change the pull-up voltage source for each LED from B_VCC to power switch output. 2. Remove the 47U output capacitor of MIC29302 to suppress inrush current. 3. Add R1, R6 and C6 for EMI suppressing. 4. Change C22, C26, C27, C30, C31, C34 and C35 from 100U to 120U for better behavior in droop test. 5. Add a 2-transistor circuit for regulator ENABLE pin. That will save several tens of mA operating current than direct connecting B_VCC to ENABLE pin. 6. Remove a redudant transistor in SELF-BUS power switching circuit. 7. Change MIC29512 to 2 paralell MIC29302 for better driving capability.
'00/08/17
2
2
1
1
Title CIRCUIT FOR GENESYS 7-PORT USB HUB Size B Date:
A B C D
Document Number USBHUB.DSN Thursday, August 17, 2000 Sheet
E
Rev 1.2 4 of 4

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