afbr-820bz Avago Technologies, afbr-820bz Datasheet - Page 17

• Manufacturer Part Number: afbr-820bz
• Description: Twelve-channel Transmitter And Receiver Pluggable, Parallel-fiber-optic Modules
• Manufacturer: Avago Technologies

Figure 11. Case Temperature Measurement Point
Figure 12. Recommended Tx Power Supply Filter
Figure 13. Recommended Rx Power Supply Filter
Figure 14. Differential Signal Definitions
17
Host Supply
Host Supply
V
or V
'V
DI/O
Receiver
+
-
DO
Dinp
Dinn
DI
refers to either V
as appropriate.
10 PF
10 PF
Transmitter
Doutp
Doutn
'V
+
-
DO
68 PH
68 PH
DI
Case Temperature
Measurement Point
'V
'V
'V
DI/OH
DI/OL
DI/OH
0.1 PF
0.1 PF
Module Vcc
Module Vcc
V
V
DI/Op
DI/On
'V
DI/OL
'V
+
-
DI/Opp
Figure 15. Transmitter Data Input Equivalent Circuit
Figure 16. Receiver Data Output Equivalent Circuit
Figure 17. TWS Interface Bus Timing
50
Ohms
SDA in
Din p
Din n
GND
SCL
GND
GND
t
V
V
rSDA
CC
CC
33
33
150 k:
100 k:
100 k:
150 k:
t
rSCL
V
V
CC
t
CC
50
Ohms
SU:SDA
25
25
SDA out
t
AA
V
CC
Dout p
Dout n
50 :
50 :
25
35 pF
35 pF
70 pF
GND
t
HD:SDA
t
fSCL
t
t
DH
fSDA