Datasheet

DS26521 Single T1/E1/J1 Transceiver
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10.4 E1 Transmitter Functional Timing Diagrams
Figure 10-19. E1 Transmit-Side Timing
Figure 10-20. E1 Transmit-Side Boundary Timing (Elastic Store Disabled)
12345 67891011 12
1
TSSYNC
FRAME#
TSYNC
TSYNC
13
14 15 16
12345
14 15 16
678910
2
NOTE 1: TSYNC IN FRAME MODE (TIOCR.0 = 0).
NOTE 2: TSYNC 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
ABCD
TCLK
TSER
TSYNC
TSYNC
TSIG
TCHCLK
TCHBLK
1
2
3
Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8
D
NOTE 1: TSYNC IN THE OUTPUT MODE (TIOCR.2 = 1).
NOTE 2: TSYNC IN THE INPUT MODE (TIOCR.2 = 0).
NOTE 3: TCHBLK IS PROGRAMMED TO BLOCK CHANNEL 2.
NOTE 4: THE SIGNALING DATA AT TSIG 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.