Rainbow Electronics DS26519 - Manual (Page 279)

DS26519 16-Port T1/E1/J1 Transceiver
279 of 310
Figure 11-19. E1 Receive-Side 1.544MHz Boundary Timing (Elastic Store Enabled)
RSERn
1
CHANNEL 23/31 CHANNEL 24/32 CHANNEL 1/2
RCHCLKn
RCHBLKn 4
RSYSCLKn
RSYNCn
3
RSYNCn
2
RMSYNCn
LSB F MSB MSB LSB
NOTE 1: DATA FROM THE E1 CHANNELS 1, 5, 9, 13, 17, 21, 25, AND 29 IS DROPPED (CHANNEL 2 FROM THE E1 LINK IS
MAPPED TO CHANNEL 1 OF THE T1 LINK, ETC.) AND THE F-BIT POSITION IS ADDED (FORCED TO ONE).
NOTE 2: RSYNCn IN THE OUTPUT MODE (RIOCR.2 = 0).
NOTE 3: RSYNCn IN THE INPUT MODE (RIOCR.2 = 1).
NOTE 4: RCHBLKn IS PROGRAMMED TO BLOCK CHANNEL 24.
Figure 11-20. E1 Receive-Side 2.048MHz Boundary Timing (Elastic Store Enabled)
RSERn
CHANNEL 1
RCHCLKn
RCHBLKn
3
RSYSCLKn
RSYNCn
2
CHANNEL 31 CHANNEL 32
RSYNCn
1
RMSYNCn
RSIGn
CHANNEL 31 CHANNEL 32
C D A B
CHANNEL 1
LSB MSB LSB MSB
C D B A
Note 4
NOTE 1: RSYNCn IN THE OUTPUT MODE (RIOCR.2 = 0).
NOTE 2: RSYNCn IN THE INPUT MODE (RIOCR.2 = 1).
NOTE 3: RCHBLKn IS PROGRAMMED TO BLOCK CHANNEL 1.
NOTE 4: RSIGn NORMALLY CONTAINS THE CAS MULTIFRAME ALIGNMENT NIBBLE (0000) IN CHANNEL 1.