ACPL-C87B-000E Datasheet, PDF (20/22 Pages) AVAGO TECHNOLOGIES LIMITED – Precision Optically Isolated Voltage Sensor

SDA
tBUF
SCL
tLOW
STOP
START
tHD:STA
tR
tF
tHD:STA
tHD:DAT
tHIGH
tSU:DAT
tSU:STA
REPEATED
START
tSU:STO
SDA
D0
ACK
WORDn
tWR
SCL
Figure 12. Serial ID and DDM Timing
STOP Condition
START Condition
SFP Module
Host Board
LASER
DRIVER
TD+
100 ohm
TD-
TX_FAULT
TX_DISABLE
Ve eT
VccT
VccR
PREAMP
&
POSTAMP
VeeR
RD+
RD-
RX_LOS
RATE_SELECT
SERIAL ID
&
DDM
MOD_DEF[0]
MOD_DEF[1]
MOD_DEF[2]
Protocol Vcc
4.7k-10k ohm
0.1 uF
Recommended
Power Supply Filter
1 uH
10 uF
1 uH
+3.3 V
0.1 uF 10 uF
0.1 uF 10 uF
Note 1
SERDes
IC
100 ohm
PROTOCOL
IC
4.7k-10k ohm
+3.3 V
4.7k-10k ohm
4.7k-10k ohm
4.7k-10k ohm
PLD/PAL
Note 1: Consult the SERDES manufacturer for the termination method.
Figure 13. Recommended Power Supply Filter and Example of SFP Host Board Schematic
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