S2070 AMCC (Applied Micro Circuits Corp), S2070 Datasheet - Page 19

• Manufacturer Part Number: S2070
• Description: Fibre Channel Transceiver
• Manufacturer: AMCC (Applied Micro Circuits Corp)

June 14, 2000 / Revision F
OUTPUT LOAD
The S2070 serial outputs require a resistive load to
set the output current. The recommended resistor
value is 150 ohms to ground. This value can be var-
ied to adjust drive current, signal voltage swing, and
power usage on the board.
ACQUISITION TIME
With the input eye diagram shown in Figure 16, the
S2070 will recover data with
time specified by T
neous phase shift of the incoming data.
Figure 11. Serial Input Rise and Fall Time
Figure 12. TTL Input/Output Rise and Fall Time
Figure 13. Serial Output Load
FIBRE CHANNEL/GIGABIT ETHERNET TRANSCEIVER
+2.0 V
+0.8 V
80%
50%
20%
T
T
LOCK
r
r
in Table 9 after an instanta-
T
T
f
IE-9 BER within the
f
150
150
VCC-1.3 V
0.01 F
0.01 F
+2.0 V
+0.8 V
80%
50%
20%
Figure 14. High Speed Differential Inputs
Figure 15. Receiver Input Eye Diagram Jitter Mask
Figure 16. Acquisition Time Eye Diagram
Amplitude
0.01 F
0.01 F
1.3
1.0
0.8
0.7
0.5
0.3
0.2
0.0
100
Vcc - 1.3 V
Normalized Time
Bit Time
30%
S2070
19