Proprietary TranSwitch Corporation Information for use Solely by its Customers
L3M
TXC-03452B
DATA SHEET
Figure 22. Receive Alarm Indication Port Timing
tPWL tPWH
tPWL
RPOHC
(OUTPUT)
tD(1)
RPOHF
(OUTPUT)
tPW
tD(2)
RAIPD
Bit 1 Byte 1 Bit 2 Byte 1
Bit 3 Byte 1 Bit 4 Byte 1 Bit 5 Byte 1
Bit 6 Byte 1 Bit 7 Byte 1
Bit 8 Byte 1
Bit 1 Byte 2
(OUTPUT)Bit 8 Byte 9
Note: Alarm indication byte consists of eight bits and is repeated nine times. Bit 8
in each byte is stretched. The first four bits correspond to the FEBE count
(bits1 through 4 in G1), bit 5 is the path RDI value, and bits 6 and 7 are set to
0, while bit 8 is set to 1.
Parameter
RPOHC low time
Symbol
Min
Typ
Max
Unit
tPWL
tPWH
tD(1)
tD(2)
tPW
617
3395
ns
ns
ns
ns
ns
RPOHC high time
771.7
RPOHF output delay after RPOHC↓
RAIPD output delay after RPOHC↓
RPOHF pulse width
-2.0
-2.0
5.0
5.0
1388.9
Figure 23. Transmit Overhead Communications Channel Timing
tPWH
TOCHC
(OUTPUT)
tPWL
tH
tSU
TOCHD
(INPUT)
Parameter
Symbol
Min
Typ
Max
Unit
TOCHC high time
tPWH
tPWL
tSU
617
11729
ns
ns
ns
ns
TOCHC low time
771.2
TOCHD set-up time to TOCHC↑
TOCHD hold time after TOCHC↑
7.0
3.0
tH
TXC-03452B-MB
Ed. 6, April 2001
- 42 of 96 -
ETC [ ETC ]
