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1 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d ? features ? micropower bipolar technology ? ansi x3t11 fibre channel compliant ? monolithic clock recovery unit C retimes & buffers received data C jitter peaking < 0.1 db ? lock detect function C frequency detection ? five port bypass circuits ? suitable for both coaxial and optical link ? low power operation 0.93 w typical ? 106.25 or 53.125 mhz reference clock ? compact 10 mm x 10 mm 64 pin pqfp package ? 3.3 v supply applications ? fc-al nodes ? raid ? jbod ? san general description the five port bypass and repeater for fc-al cir- cuit is used in full-speed (1.0625 gb/s) disk arrays. it contains a monolithic clock recovery unit (cru), a lock detect feature and five port bypass circuits. the S2073 may be used to implement a single chip figure 1. S2073 functional block diagram device specification five port bypass and repeater for fc-al S2073 arbitrated loop port bypass retiming node. the S2073 performs the function of five port bypass cir- cuits followed by a clock and data retimer (cdr). the cdr retimes incoming serial data, detects whether a valid signal is present and outputs a low jitter serial data stream. functional description the S2073 functional block diagram is shown in fig- ure 1. the S2073 performs two functions. the first function is a five port bypass circuit (pbc) for nodes in a fc-al system. the low jitter accumulation of the port bypass path is essential in these systems. the second function is to restore signal quality in raid drives using the fc-al link configuration. the S2073 clock and data recovery pll provides low jitter transfer peaking and high jitter tolerance. in addition, the lock detect circuit monitors the incoming signals for frequency, which is useful for link performance monitoring and detection of channel present. jitter performance input jitter tolerance is defined as the amplitude of frequency dependent, random and deterministic jitter that causes the clock recovery pll to violate the ber specifications. the S2073 complies with the minimum jitter toler- ance requirements proposed by the fibre channel jitter working group when used with differential in- puts and outputs as shown in figure 2. in addition, the S2073 is designed for minimum jitter generation and jitter transfer specifications. this allows the opti- mum system design for arbitrated loop architectures. 0 1 0 1 0 1 0 1 ddo0 ddi0 en0 ddo1 ddi1 en1 ddo2 ddi2 en2 ddo3 ddi3 en3 0 1 ddo4 ddi4 en4 in cdr outp/n lockdet bypass refclk lckrefn refsel lpf1 lpf2
2 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d figure 2. fc-al jbod application for repeaters cdr 01 01 01 01 01 disk storage fc-al disk drive lrc interlock s2070 fc xcvr e_store disk storage fc-al disk drive lrc interlock e_store disk storage fc-al disk drive lrc interlock e_store disk storage fc-al disk drive lrc interlock e_store optics or copper s2058 dual sc or db-9 normal normal normal normal bypass pulldown for bypass in absence of disk drive S2073 s2070 fc xcvr s2070 fc xcvr s2070 fc xcvr
3 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d device description the S2073 provides a port bypass function for up to 5 nodes in an fc-al circuit, with low jitter accumulation. an integrated repeater reduces jitter and restores sig- nal amplitude levels for optimal signal integrity. jitter performance of the pll is specified by jitter tolerance and jitter transfer. in accordance with ansi x3t11, jitter tolerance is divided into random, deterministic, and frequency dependent jitter. figure 3 illustrates the components of random, deterministic, and frequency dependent jitter that must be tolerated to be ansi x3t11 compliant. random jitter tolerance random jitter tolerance is the amount of jitter with a gaussian distribution that the clock recovery pll must tolerate. deterministic jitter tolerance deterministic jitter tolerance is the amount of deter- ministic jitter that the clock recovery pll must tolerate. frequency dependent jitter tolerance frequency dependent input jitter tolerance is defined as the peak to peak amplitude of sinusoidal jitter ap- plied on the input signal that causes the clock recovery pll to violate ber specifications. see figure 4. jitter transfer jitter transfer is defined as the ratio of jitter on the output signal to the jitter applied on the input signal versus frequency. jitter transfer requirements are shown in figures 4 and 5. the measurement condition is that input sinusoidal jitter up to the mask level in figure 4 is applied and the output jitter is measured for compliance to the mask of figure 5. the jitter transfer mask includes specifications for both jitter peaking and bandwidth. lock detect the S2073 lock detect circuit monitors the selected input signal to detect the presence of the channel. this is done by monitoring the frequency content of the incoming data. the frequency monitor circuit checks the difference between the divided down re- covered clock and the externally supplied reference clock (refclk). if the frequency difference between the recovered clock and the reference clock varies by more than 100 ppm the part will be declared out of lock. in the out of lock state, the pll will lock to the local reference clock and periodically poll the serial data inputs looking for data with valid fre- quency content. figure 3. input jitter tolerance figure 5. jitter transfer specification figure 4. frequency dependent jitter tolerance mask f c /25,000 (42.5 khz) cut-off freq a f c /1,667 (637 khz) cut-off freq b time (unit interval - ui) 1.5 0.4 frequency (hz) (khz) = cut-off freq @ 1,0625 gbps freq dep dj(isi) rj 10 -12 0 329 612 940 ps ber jitter transfer acceptable range slope = -20 db/decade fc = 2 mhz peaking = 0.2 db
4 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d table 1. pin assignment and descriptions e m a n n i pl e v e lo / i# n i pn o i t p i r c s e d p t u o n t u o . f f i d l c e p v lo 8 3 9 3 e e s ( . p o o l e h t n i c b p t x e n e h t o t d e t c e n n o c e b o t t u p t u o l a i r e s a t a d d n a k c o l c e h t y b d e m i t e r n e e b s a h t u p t u o s i h t ) . 2 e r u g i f . l l p y r e v o c e r p n i n n i . f f i d l c e p v l i 6 1 5 1 . t i u c r i c s s a p y b t r o p s u o i v e r p e h t m o r f t u p n i l a i r e s p 0 i d d n 0 i d d p 1 i d d n 1 i d d p 2 i d d n 2 i d d p 3 i d d n 3 i d d p 4 i d d n 4 i d d . f f i d l c e p v l i 0 1 9 4 3 1 6 0 6 0 5 9 4 3 4 2 4 y b n e v i r d e b d l u o h s t u p n i s i h t . s s a p y b t r o p e h t o t t u p n i l a i r e s f o e n o y n a . s s a p y b t r o p e h t o t d e t c e n n o c e v i r d k s i d l a - c f e h t n i s i c b p s t i f i k c o l b r d c e h t o t d e t u o r e b y a m s r i a p t u p n i e s e h t . e d o m s s a p y b t r o p n i e r a s c b p r e h t o e h t d n a e d o m l a m r o n k l c f e r l t t i9 2 . e v i t c a e g d e g n i s i r , l l p e h t r o f k c o l c e c n e r e f e r 1 f p l 2 f p l g o l a n a 2 3 3 3 s r o t s i s e r d n a r o t i c a p a c r e t l i f p o o l l a n r e t x e e h t . s n i p r e t l i f p o o l . s n i p e s e h t o t d e t c e n n o c e r a n f e r k c l e t a t s 3 l t t i5 3 e h t o t k c o l o t d e c r o f e b l l i w l l p e h t , e v i t c a n e h w . w o l e v i t c a . ) k l c f e r ( k c o l c e c n e r e f e r l a c o l t e d k c o l l t t o4 3 d e k c o l s i l l p e h t s e t a c i d n i t e d k c o l , e v i t c a n e h w . h g i h e v i t c a e h t o t k c o l l l i w l l p e h t , e v i t c a n i n e h w . m a e r t s a t a d l a i r e s e h t o t . n o i t i d n o c a t a d f o s s o l a g n i t a c i d n i k c o l c e c n e r e f e r l a c o l p 0 o d d n 0 o d d p 1 o d d n 1 o d d p 2 o d d n 2 o d d p 3 o d d n 3 o d d p 4 o d d n 4 o d d . f f i d l c e p v l o 3 1 2 1 7 6 4 6 3 6 8 5 7 5 6 4 5 4 t u p n i e h t e v i r d d l u o h s s t u p t u o e s e h t . s r i a p t u p t u o s s a p y b t r o p . e v i r d k s i d l a - c f e h t f o s t r o p 0 n e 1 n e 2 n e 3 n e 4 n e l t t i 1 2 2 2 3 2 5 2 6 2 t r o p e h t , e v i t c a n i s i n e n e h w . h g i h e v i t c a . l o r t n o c s s s a p y b t r o p s s a p y b t r o p , e v i t c a s i n e n e h w . e d o m s s a p y b n i e b l l i w s s a p y b . e d o m l a m r o n n i e b l l i w
5 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d table 1. pin assignment and descriptions (continued) e m a n n i pl e v e lo / i# n i pn o i t p i r c s e d d n gd n u o r g , 4 1 , 5 , 1 , 0 3 , 0 2 9 5 , 8 4 , 7 3 e r a d n a e c a f r u s e i d e h t o t d e t n u o m y l l a c i s y h p e r a s n i p d n u o r g l a m r e h t t s e b r o f . h t a p l a m r e h t e h t f o t r a p t n a t r o p m i n a d n u o r g a o t d e t c e n n o c e b d l u o h s s n i p d n u o r g l l a , e c n a m r o f r e p . e l b i s s o p f i s a i v e l p i t l u m g n i s u e n a l p c c v , 1 1 , 8 , 2 , 1 4 , 0 4 2 6 , 7 4 , 4 4 . y l p p u s r e w o p v 3 . 3 + a c c vg o l a n a 9 1 8 2 . r d c e h t r o f y l p p u s r e w o p v 3 . 3 + a d n gg o l a n a 8 1 7 2 . r d c e h t r o f d n u o r g s s a p y b l e v e l 3 l t t i7 1 n o i t a r e p o p i h c l a m r o n . t s e t g n i r u t c a f u n a m r o f d e s u . h g i h e v i t c a e h t d n a e d o m t s e t n i t u p s i 3 7 0 2 s , e v i t c a n e h w . e v i t c a n i n e h w . g n i t s e t y r o t c a f r o f d e s s a p y b e b l l i w l l p c n d , 1 3 , 4 2 , 2 5 , 1 5 , 4 5 , 3 5 6 5 , 5 5 . t c e n n o c t o n o d l e s f e rl t ti6 3 z h m 5 2 . 6 0 1 s w o l l a , e v i t c a s i l e s f e r n e h w . w o l e v i t c a z h m 5 2 1 . 3 5 s w o l l a , e v i t c a n i s i l e s f e r n e h w . k c o l c e c n e r e f e r . k c o l c
6 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d figure 6. S2073 pinout 1 2 3 4 5 6 7 8 9 10 11 19 20 21 22 23 24 25 26 27 28 29 62 61 60 59 58 57 56 55 54 53 52 48 47 46 45 44 43 42 41 40 39 38 S2073 64 pin pqfp top view 37 36 gnd vcc ddo4p ddo4n vcc ddi4p ddi4n vcc vcc outn outp gnd refsel 35 34 33 lckrefn lockdet lpf2 17 18 vcca gnd en0 en1 en2 dnc en3 en4 gnda vcca refclk bypass gnda 30 31 32 gnd dnc lpf1 64 63 vcc ddi2p ddi2n gnd ddo3p ddo3n dnc dnc dnc dnc dnc ddo2p ddo2n 51 50 49 dnc ddi3p ddi3n 12 13 gnd vcc ddi1n ddi1p gnd ddo1n ddo1p vcc ddi0n ddi0p vcc ddo0n ddo0p 14 15 16 gnd inn inp
7 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d figure 7. S2073 64 pin pqfp package thermal management e c i v e dr e w o p e g a k c a p x a m 1 q q q q q a j q q q q q a j ) m p f l 0 0 1 h t i w ( 2 3 7 0 2 sw 9 2 . 1w / c ? 0 5w / c ? 4 4 1. power is measured with outputs terminated. 2. the S2073 requires an airflow of 100 linear feet per minute (lfpm) for operation over the commercial temperature range. no heatsink is required.
8 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d table 2. ac characteristics r e t e m a r a pn o i t p i r c s e dn i mp y tx a ms t i n us n o i t i d n o c t r t , f e m i t l l a f d n a e s i r k l c f e r d e r i u q e r0 . 3s n. % 0 9 o t % 0 1 t f y c n e u q e r f k l c f e r d e r i u q e r e c n a r e l o t 0 0 1 C0 0 1 +m p p d n a k l c f e r n e e w t e b e c n e r e f f i d . y c n e u q e r f a t a d x r c de l c y c y t u d k l c f e r d e r i u q e r0 40 6% t d d t u p t u o ] 0 : 4 [ o d d o t t u p n i y n a y a l e d n o i t a g a p o r p 4s n. 8 e r u g i f e e s t o d d r t o d d f e m i t l l a f d n a e s i r a t a d l a i r e s t u o o t ] 0 : 4 [ o d d 5 8 10 5 3s p e l p m a s a n o d e t s e t , % 0 8 o t % 0 2 . s i s a b s n o i t a c i f i c e p s r e t t i j t u o j rn / p t u o ) s m r ( r e t t i j m o d n a r4 1s p s i s a b e l p m a s a n o d e t s e t , s m r t u p n i r e t t i j c f e s a c t s r o w h t i w . l a n g i s t u o j dn / p t u o ) p - p ( r e t t i j c i t s i n i m r e t e d0 5s p e l p m a s a n o d e t s e t , k a e p o t - k a e p r e t t i j c f e s a c t s r o w h t i w s i s a b . l a n g i s t u p n i t j q e r f e c n a r e l o t r e t t i j t n e d n e p e d y c n e u q e r f n / p n i 1 . 0i u e r b i f r e p k s a m e c n a r e l o t r e t t i j . n o i t a c i f i c e p s r e t t i j l e n n a h c t j n a rn / p n i e c n a r e l o t r e t t i j m o d n a r2 2 . 0i u. k a e p - o t - k a e p t j dn / p n i e c n a r e l o t r e t t i j c i t s i n i m r e t e d8 3 . 0i u. z h m 5 2 1 . 3 5 > @ k a e p - o t - k a e p r f x j o t t u p n i ( ) t u p t u o o t n / p n i m o r f g n i k a e p r e f s n a r t r e t t i j n / p t u o 1 . 0b d. n r e t t a p 0 1 0 1 d v t u o - o t - k a e p l a i t n e r e f f i d t u p t u o l c e p v l g n i w s e g a t l o v k a e p 0 0 0 10 0 2 2p - p v m0 5 w v o t c c . 9 e r u g i f e e s . v 0 . 2 - d v n i k a e p - o t - k a e p l a i t n e r e f f i d r e v i e c e r y t i v i t i s n e s t u p n i 0 0 20 0 6 2p - p v m v c c y l l a n r e t n i . d e l p u o c c a , v 3 . 3 = v o t d e s a i b c d c c . v 5 6 . 0 - . 9 e r u g i f e e s t r e t t i j s m r y n a , n o i t a l u m u c c a r e t t i j m o d n a r ] 0 : 4 [ o d d o t t u p n i 35 s p h t i w d e t a l u m u c c a r e t t i j s m r n o d e t s e t . n r e t t a p a t a d 7 . 8 2 k . s i s a b e l p m a s t r e t t i j j d y n a , n o i t a l u m u c c a r e t t i j c i t s i n i m r e t e d ] 0 : 4 [ o d d o t t u p n i 0 1 0 4 s p d e t a l u m u c c a r e t t i j c i t s i n i m r e t e d . n r e t t a p a t a d 5 . 8 2 k h t i w . s i s a b e l p m a s n o d e t s e t
9 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d table 3. lvttl dc characteristics table 4. lvpecl input/output dc charateristics r e t e m a r a pn o i t p i r c s e dn i mp y tx a ms t i n us n o i t i d n o c v h o ) l t t ( e g a t l o v h g i h t u p t u o2 . 2v i h o a m 1 . 0 C = v l o ) l t t ( e g a t l o v w o l t u p t u o5 . 0v i l o a m 2 . 1 + = v h i ) l t t ( e g a t l o v h g i h t u p n i0 . 2v v l i ) l t t ( e g a t l o v w o l t u p n i8 . 0v i h i ) l t t ( t n e r r u c h g i h t u p n i0 5a v n i v 4 . 2 = i l i ) l t t ( t n e r r u c w o l t u p n i0 0 6 -5 -a v n i v 5 . 0 = r e t e m a r a pn o i t p i r c s e dn i mp y tx a ms t i n us n o i t i d n o c v h o e g a t l o v h g i h t u p t u o v c c 5 1 . 1 - v v l o e g a t l o v w o l t u p t u o v c c 5 6 . 1 - v v h i e g a t l o v h g i h t u p n i v c c 2 . 1 - v c c 5 . 0 - v v l i e g a t l o v w o l t u p n i v c c 0 . 2 - v c c 4 . 1 - v i h i t n e r r u c h g i h t u p n i0 5 2 -0 0 2a i l i t n e r r u c w o l t u p n i0 5 2 -0 0 2a
10 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d r e t e m a r a pn i mp y tx a ms t i n u v ( e g a t l o v y l p p u s r e w o p l t t c c ) 5 . 04 +v v ( e g a t l o v t u p n i c d l c e p p n i ) 0 v c c v v ( e g a t l o v t u p n i c d l t t p n i ) 5 . 0 -0 . 5v t u p t u o h g i h r o f s t u p t u o o t d e i l p p a e g a t l o v c d v ( e t a t s l t t n i ) 5 . 0 - v c c 5 . 0 + v i ( t n e r r u c t u p t u o l t t t u o ) h g i h t u p t u o , c d ( ) 5a m i ( t n e r r u c t u p t u o l c e p t u o ) h g i h t u p t u o , c d ( ) 4 2a m t ( e r u t a r e p m e t e g a r o t s g t s ) 5 6 -0 5 1c ? r e t e m a r a pn i mp y tx a ms t i n u v ( e g a t l o v y l p p u s r e w o p c c ) 3 1 . 3 +7 4 . 3 +v s a i b r e d n u e r u t a r e p m e t n o i t c n u j0 3 1c ? e g n a r e r u t a r e p m e t g n i t a r e p o t n e i b m a00 7c ? y l p p u s t n e r r u c c c i 2 0 6 20 0 3a m n i p t u p n i l c e p v l y n a n o e g a t l o v v c c 2 Cv c c v n i p t u p n i l t t y n a n o e g a t l o v0 v c c v table 5. absolute maximum ratings table 6. recommended operating conditions 1 1. amcc guarantees the functional and parametric operation of the part under "recommended oper- ating conditions," except where specifically noted in the ac and dc parametric tables. 2. icc is measured with outputs not terminated. electrostatic discharge (esd) ratings the S2073 is rated to the following esd voltages based on the human body model: 1. all pins are rated at or above 1000 v, except pin 32 and pin 33. the following are absolute maximum S2073 device stress ratings. stresses be- yond those listed may cause permanent damage to the device. these are stress ratings only. operation of the device at these or any other conditions beyond those indicated in the electrical characteristics section of this document is not implied.
11 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d power supply sequencing when the S2073 is operated with a 5 volt controller, it is recommended that power be applied to the S2073 before or simultaneously (time difference less than 1 ms) with the application of power to the 5 volt controller. if this condition cannot be met, series re- sistance of at least 33 ohms is required on all ttl inputs driven from the 5 volt environment. figure 8. timing waveforms figure 9. differential input/output voltage in p/n di p/n do p/n t dd v in/out (+) v in/out (? v in/out (+) ?v in/out (? v swing d v in/out = 2 x v swing note: v in/out (+) C v in/out (-) is the algebraic difference of the input/output signals. please note that 33 ohms is already recommended on dynamically switching input signals such as refclk and lckrefn to limit overshoot and ring- ing. static control lines such as en[4:0], bypass, and refsel should also be provided with series resistors of at least 33 ohms (100 ohms recom- mended) to limit input current if the 5 volt environ- ment is powered while the 3.3 volt vcc of the S2073 is off.
12 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d figure 10. high speed differential lvpecl outputs figure 11. high speed differential lvpecl inputs backplane 150 150 S2073 0.1 f 0.1 f zo=50 zo=50 inp inn 0.1 f 0.1 f v cc - 0.5 v S2073 100 zo=50 zo=50 figure 12. loop filter circuit lpf1 24 2.2 f (x7r type) lpf2 24 S2073
13 five port bypass and repeater for fc-al S2073 february 9, 2000 / revision d amcc is a registered trademark of applied micro circuits corporation. copyright ? 2000 applied micro circuits corporation amcc reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the informati on being relied on is current. amcc does not assume any liability arising out of the application or use of any product or circuit described herein, neither do es it convey any license under its patent rights nor the rights of others. amcc reserves the right to ship devices of higher grade in place of those of lower grade. amcc semiconductor products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. applied micro circuits corporation ? 6290 sequence dr., san diego, ca 92121 phone: (858) 450-9333 ? (800) 755-2622 ? fax: (858) 450-9885 http://www.amcc.com c e r t i f i e d i s o 9 0 0 1 x i f e r pe c i v e de g a k c a p t i u c r i c d e t a r g e t n i C s3 7 0 2p f q p n i p 4 6 C f q ordering information x xxxx xx prefix part no. package

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