http : //www.wenshing.com.tw ; http://www.rf.net.tw trw - 24d s hi data s heet p. 1 we nshing?? trw - 24d s hi rf module 2.4g hz direct sequence spread spectrum hi power module version history version date changes v1.00 may 2 3 , 200 9 1 st. edition v2.00 dec. 2 1 , 200 9 2 nd. edition v2.01 jan . 7, 2010 3 rd. edition v2.0 2 jan .11 ,2010 4 th . edition
http : //www.wenshing.com.tw ; http://www.rf.net.tw trw - 24d s hi data s heet p. 2 product profile this module can apply to wireless data two - way transmission. frequency is 2.4ghz and takes direct sequence spread spectrum . strong anti - interference , especially, it is less vulnerable to the wireless lan, bluetooth receiver, wireless network, wifi, microwave ovens and so on. trw - 24dshi two - way transceiver module is taking direct sequence spread spectrum ( dsss ). you can get the highest reliability and high data rate performance by using variable phase modulation su ch as psk, qpsk ( quadrature phase shift keying) dqpsk(differential quadrature phase shift keying) and so on. a dvantage is it still can keep good communication during existing 2.4ghz wireless network in high - interference environment. d irect sequence spread spectrum( dsss) provides the m aximum data tran sfer rate is 250kbps , maximum transmitter power is +2 0 dbm, working voltage is 4.5v~5.5 v. build - in uart micro - controller interface . it can apply to various data transmission , short distance handheld device and corresponding application , such as wireless mou se, wireless keyboard, wireless remote controller, home automatically control, wireless toy and so on. application ? wireless keyboard and mouse ? remote control ? voip phone ? amr C automatic meter reading ? wireless game pad ? wireless toys ? home automation ? rke C t wo - way remote keyless entry key feature ? 2.4ghz sequence spread spectrum ? rf output power u p t o + 2 0 dbm ? receive sensitivity u p t o - 98 dbm ? voltage su pply from 4.3 v ~ 5.5 v ? distance range up to 500 m ( open s pace) ? dsss data rate up to 250kbps ? auto transaction seque ncer no need mcu ? dynamic data rate reception ? uart micro - controller interface ( ttl 3v3)
http : //www.wenshing.com.tw ; http://www.rf.net.tw trw - 24d s hi data s heet p. 3 characteristic block diagram parameter min type max unit condition operating condition operating temperature range - 10 + 70 storage temperature range - 40 +90 operating supply voltage 4.3 5.5 v current consumption rx mode 43 ma tx mode 2 1 0 ma peak current sleep mode 5 a rf characteristic frequency range 2401 2483 mhz frequency deviation 270 330 khz data rate 31.25 1000 kbps tx output power +19 + 2 0 dbm rx sensitivity - 98 dbm link turnaround time 30 65 s modulation dsss 2 . 4 g h z d s s s r f i c b p f b p f s a w f i l t e r p o w e r a m p l i f i e r e n c o d e r b r i d g e c o m m u n i c a t i o n c o n t r o l l e r r e g u l a t o r g n d v c c v d d u a r t r x p o w e r c e u a r t t x r t s c t s t r w - 2 4 d s h i b l o c k d i a g r a m p 1 . 0 p 1 . 1
http : //www.wenshing.com.tw ; http://www.rf.net.tw trw - 24d s hi data s heet p. 4 view pin assignment pin function i/o descrip tion 1 p2.1 o cts 2 nc x nc 3 p0.4 o uart tx 4 p1.7 i uart rx 5 vcc p power cathode 6 gnd g power n egative 7 vo o 3.3v output 8 p1.0 o uart data rate select 9 p1.1 o uart data rate select 10 cn x nc
http : //www.wenshing.com.tw ; http://www.rf.net.tw trw - 24d s hi data s heet p. 5 application circuit 1 2 3 4 a b c d 4 3 2 1 d c b a t itle wensheng size a4 document number trw- 24d shi date: 21/12/2009 rev sheet: of TRW-24DSHI to rs232 demo circuit the road map set out in all the patents, copyrights, trade secrets or technology obsessed secretary (know-how) and ownership, without the written consent of the company, will be allowed to copy, photography and reproduced, the company will retain the right to legal recourse. 1 6 2 7 3 8 4 9 5 j1 rs232 3v3 c4 10 5p c5 10 5p c6 10 5p c7 10 5p c8 10 5p c1+ 1 v+ 2 c- 3 c2+ 4 c2- 5 v- 6 t2out 7 r2in 8 r2out 9 t2in 10 t1in 11 r1out 12 r1in 13 t1out 14 gnd 15 vc c 16 u1 adm 3 202 p2.1 1 p0.1 2 p0.4 3 p1.7 4 vc c 5 gnd 6 vo 7 p1.0 8 p1.1 9 ce 10 module1 trw-2 4dshi j2 dc jack c3 nc vcc c1 10 6p dc 4.3v-5.5v dcd rxd dsr rt s txd ct s dt r ri sg 1 2 4 3 s2 sw dip-2
http : //www.wenshing.com.tw ; http://www.rf.net.tw trw - 24d s hi data s heet p. 6 interface data rate select p1.1 p1.0 data rate 0 0 4.8k 0 1 9.6k 1 0 19.2k 1 1 19.2k command summary 1. interface rate selection w hen module and device interface rate are the same , it will s ustained response 0 xfe 0xfe 0xfe 0xfe data and will stop response until module comple te configure. 2. configuration module 0xfe+1byte( c hannel)+ 1byte( rf rate)+ 1byte(rf power)+ 1byte ( high byte gid code)+ 1 byte (low byte gid code) ? channel: 0x01(2400mhz) 0x53(2483mhz), 1mhz for every channel interval. ? rf rate: value rf data rate modulation mode 00 1m gfsk 01 250k 32 chip 8dr 02 125k 64 chip 8dr 03 62.5k 32 chip ddr 04 31.25k 64 chip ddr ? in gfsk mode data is transmitted at 1mbps without any dsss ? in 8dr mode 1 b yte is encoded in each pn code symbol transmitt ed ? in ddr mode 2bits are encoded in each pn code symbol transmitted ? in sdr mode a single bit is encoded in each pn code symbol transmitted ? rf power value(hex) 00 01 02 03 04 05 06 07 power(dbm) - 14 - 8 - 2 +4 +9 +16 +18.5 +20
http : //www.wenshing.com.tw ; http://www.rf.net.tw trw - 24d s hi data s heet p. 7 ? group id(gid) two bytes are available for user setting. set 0000, it is broadcast mode and all devices can receive if the channels are the same. 3. read internal setting value= 0x7e send back value = 0x7e+1byte(channel)+ 1byte(rf rate)+1byte(rf power) +1byte(high byte gid code)+1byte (low byte gid code) 4. transmission data 0xfd+data( it must be less than 62 b ytes)
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