TRCV0110G LSI, TRCV0110G Datasheet - Page 12

• Manufacturer Part Number: TRCV0110G
• Manufacturer: LSI

Specifications of TRCV0110G

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.13V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

Clock Recovery, 1:16 Data Demultiplexer
High-Speed Data Inputs
Loopback Data Input
The second high-speed input in the TRCV0110G is for system loopback operation. When mated with Agere’s
TTRN0110G, the high-speed loopback data output can be direct coupled into the TRCV0110G loopback data input
pins LBDP and LBDN. During this mode of operation, parallel low-speed data coming from the user application
(typically a line card or transponder module) can be serialized through the TTRN0110G and redirected through the
high-speed loopback data input port of the TRCV0110G. The TRCV0110G would then recover the clock and dese-
rialize the data to be received by the users application. The loopback data flow is controlled by the ENLBDN pins
on both devices.
Clock Recovery Operation
The clock and data recovery (CDR) circuit uses a PLL to extract the clock and retime the 10 Gbits/s data. The
TRCV0110G uses an external loop filter that is described below in Figure 5. A 622 MHz clock derived from the
recovered clock is available as an output at CK622P/N. A 622 MHz or 155 MHz clock derived from the recovered
clock is available as an auxiliary output at CKOP/N.
12
LOOPBACK OUTPUTS
FROM TTRN0110G
(continued)
V
V
CCA
CCA
Figure 4. Loopback Data Input Circuit
LBDP
LBDN
Figure 5. TRCV0110G Loop Filter
0.01 F
160
5 pF
5 pF
50
LFP
LFN
V
CCD
50
PLL
LOOPBACK
INPUT
Agere Systems Inc.
June 7, 2002
0366.a(F)
2245(F)