vsc8113 Vitesse Semiconductor Corp, vsc8113 Datasheet - Page 13

• Manufacturer Part Number: vsc8113
• Description: Atm/sonet/sdh 622 Mb/s Transceiver Mux/demux With Integrated Clock Generation And Clock Recovery
• Manufacturer: Vitesse Semiconductor Corp

VSC8113
G52154-0, Rev 4.2
3/19/99
Data Sheet
Data Latency
part. Table 10 bounds the data latency through each path with an associated clock signal.
Table 10: Data Latency
Clock Recovery Unit
Table 11: Reference Frequency for the CRU
Clock Multiplier Unit
Table 12: Reference Frequency Selection and Output Frequency Control
Circuit Mode
CRUREFSEL
The VSC8113 contains several operating modes, each of which exercise different logic paths through the
Equipment
Loopback
Loopback
Facilities
Transmit
Receive
STS12
1
1
1
1
0
0
0
0
1
1
0
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: [phone]
Data TXIN [7:0] to MSB at TXDATAOUT
Byte data TXIN [7:0] to byte data on RXOUT [7:0]
MSB at RXDATAIN to MSB at TXDATAOUT
MSB at RXDATAIN to data on RXOUT [7:0]
STS12
1
0
B2
1
0
0
0
1
0
0
0
VITESSE
VITESSE SEMICONDUCTOR CORPORATION
SEMICONDUCTOR CORPORATION
B2
X
X
Description
Uses CMU’s Reference Clock (See Table 12 below)
B1
1
1
0
0
1
1
0
0
with Integrated Clock Generation and Clock Recovery
ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux
B1
X
X
B0
B0
X
X
0
0
1
0
0
0
1
0
CRUREFCLK
77.76 ± 500ppm
77.76 ± 500ppm
Frequency
[MHz]
TXCLKOUT
TXCLKOUT
Frequency
Reference
Reference
RXCLKIN
RXCLKIN
[MHz]
19.44
38.88
51.84
77.76
19.44
38.88
51.84
77.76
Clock
Range of Clock
Frequency
Frequency
Output
[MHz]
622.08
155.52
Output
[MHz]
622.08
622.08
622.08
622.08
155.52
155.52
155.52
155.52
cycles
25-35
27-35
4-13
2-4
Page 13