77V106L25TF IDT, Integrated Device Technology Inc, 77V106L25TF Datasheet - Page 15

• Manufacturer Part Number: 77V106L25TF
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 77V106L25TF

• Data Rate: 25.6/51.2Mbps
• 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: 0C to 70C
• Package Type: TQFP
• Operating Temperature Classification: Commercial
• Pin Count: 64
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

TABLE 2 — LOOP TIMING JITTER
Loop Timing Jitter Specification
up in Figure 15. Using the formula above, the jitter specification was derived.
IDT77V106L25
Line Rate
The waveforms below show some of the measurements taken with the set-
Mbps
32
64
OSC
Data Rate
Normal Mode
Line Card 1
Mbps
25.6
51.2
TX
RX
Min.
1
—
—
100 ps
100 ps
Figure 15. Test Setup for Loop Timing Jitter Measurements
Typ.
Max.
3
4
—
—
2
5
RX
TX
TX
R X
TX
R X
Using 32Mhz OSC
Using 64Mhz OSC
Loop Timing Mode
Loop Timing Mode
Loop Timing Mode
Note
CLK
CLK
CLK
Line Card 2
Line Card 3
Line Card 4
15
For example, at data rate 25.63 Mbps, jitter added going through Line Card
3 is 1.5ns - 1.4ns (as shown in the waveform below).
Data
Data
Data
Data
Data
D ata
SW ITCH
Figure 15