tdat04622 ETC-unknow, tdat04622 Datasheet - Page 300

• Manufacturer Part Number: tdat04622
• Description: Tdat Sonet/sdh 155/622/2488 Mbits/s Data Interfaces
• Manufacturer: ETC-unknow

TDAT042G5 SONET/SDH
155/622/2488 Mbits/s Data Interface
Interface Timing Specifications
Transport Overhead Access Channel (TOAC) Interface Timing
* Clock pulse tCP = x/y, where:
Note: Duty cycles shown are nominal.
* Clock pulse tCP = x/y, where:
Note: Duty cycles shown are nominal.
Table 173. Receive TOAC Interface Timing Specifications
272
OUTPUTS
OUTPUTS
x = 32 for STS-3/STM-1 and STS-12/STM-4, or x = 8 for STS-48/STM-16;
y = clock frequency in MHz on the transmit line clock pins TxCKP/N.
x = 32 for STS-3/STM-1 and STS-12/STM-4, or x = 8 for STS-48/STM-16;
y = clock frequency in MHz on the transmit line clock pins TxCKP/N.
Symbol
t72
t73
20.736 MHz (STS-12/STM-4)
OUTPUT—RxTOHCK[D:A]
OUTPUT—RxTOHCK[D:A]
5.184 MHz (STS-3/STM-1)
DUTY CYCLE CLOCK
DUTY CYCLE CLOCK
RxTOHF[D:A] 8 kHz
RxTOHF[D:A] 8 kHz
Test Conditions
(STS-48/STM-16)
Figure 49. STS-12/STM-4 and STS-48/STM-16 Receive TOAC Interface Timing
C
C
RxTOHD[D:A]
RxTOHD[D:A]
L
L
= 50 pF
= 50 pF
Figure 50. STS-3/STM-1 Receive TOAC Interface Timing
33%
33%
Propagation Delay
(0.75)tCP*
(Min)
0
0
66%
66%
(continued)
t73
(Max)
10
10
50%
50%
tCP
Unit
50%
50%
ns
ns
t72
t72
50%
50%
50%
50%
(continued)
t73
50%
50%
tCP
50%
50%
Agere Systems Inc.
33%
33%
(0.75)tCP*
Data Sheet
May 2001
66%
66%
0152(F).a
0153(F).a