77V126L200TFI IDT, Integrated Device Technology Inc, 77V126L200TFI Datasheet - Page 16

• Manufacturer Part Number: 77V126L200TFI
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 77V126L200TFI

• Number Of Channels: 1
• Type Of Atm Phy Interface: UTOPIA
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Pin Count: 64
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

derived. For example, at data rate of 25.6Mbps, jitter added going through Line Card 3 is 1.5ns -1.4ns (as shown in the waveforms below).
IDT77V126L200
Loop Timing Jitter Specification
The waveforms below show some of the measurements taken with the set-up in Figure 15. Using the formula above, the jitter specification was
Line Rate
OSC
Mbps
Normal Mode
Line Card 1
128
256
32
64
TX
RX
1
Data Rate
Mbps
102.4
204.8
25.6
51.2
Figure 15 Test Setup for Loop Timing Jitter Measurements
3
4
2
5
RX
TX
RX
RX
Min.
TX
TX
Table 3 Loop Timing Jitter
--
--
--
--
Loop Timing Mode
Loop Timing Mode
Loop Timing Mode
16 of 30
CLK
CLK
CLK
Line Card 2
Line Card 3
Line Card 4
100 ps
100 ps
Typ.
80 ps
20 ps
Max.
--
--
--
--
Data
Data
Data
Data
Data
Data
Using 32Mhz OSC, multiplier at 1x
Using 64Mhz OSC, multiplier at 1x
Using 32Mhz OSC, multiplier at 4x
Using 64Mhz OSC, multiplier at 4x
Note
SWITCH
December 2004