Datasheet

DS26514 4-Port T1/E1/J1 Transceiver
19-5856; Rev 4; 5/11 278 of 305
11.4 E1 Transmitter Functional Timing Diagrams
Figure 11-24. E1 Transmit-Side Timing
Figure 11-25. E1 Transmit-Side Boundary Timing (Elastic Store Disabled)
1
2
3
4
5
6
7
8
9
10
11
12
TSSYNCIOn
FRAME#
TSYNCn
1
TSYNCn
2
13
14
15
16
1
2
3
4
5
14
15
16
6
7
8
9
10
NOTE 1: TSYNCn IN FRAME MODE (TIOCR.0 = 0).
NOTE 2: TSYNCn IN MULTIFRAME MODE (TIOCR.0 = 1).
NOTE 3: THIS DIAGRAM ASSUMES BOTH THE CAS MF AND THE CRC-4 MF BEGIN WITH THE TAF FRAME.
LSB
MSB
LSB
MSB
CHANNEL 1 CHANNEL 2
CHANNEL 1 CHANNEL 2
A B C D
TCLKn
TSERn
TSYNCn
1
TSYNCn
2
TSIGn
TCHCLKn
TCHBLKn
3
Si
1
A
Sa4
Sa5
Sa6
Sa7
Sa8
D
NOTE 1: TSYNCn IN THE OUTPUT MODE (TIOCR.2 = 1).
NOTE 2: TSYNCn IN THE INPUT MODE (TIOCR.2 = 0).
NOTE 3: TCHBLKn IS PROGRAMMED TO BLOCK CHANNEL 2.
NOTE 4: THE SIGNALING DATA AT TSIGn DURING CHANNEL 1 IS NORMALLY OVERWRITTEN IN THE TRANSMIT
FORMATTER WITH THE CAS MF ALIGNMENT NIBBLE (0000).
NOTE 5: SHOWN IS A TNAF FRAME BOUNDARY.