Rainbow Electronics DS2154 - Manual (Page 52)

DS2154
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RECEIVE SIDE 1.544 MHz BOUNDARY TIMING (WITH ELASTIC STORE ENABLED) Figure 13–3
RSYSCLK
RSER 1
RSYNC 2 /
RMSYNC
RSYNC 3
RCHCLK
RCHBLK 4
CHANNEL 24/32 CHANNEL 1/2 CHANNEL 23/31
LSB MSB LSB MSB F
NOTES:
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).
2. RSYNC is in the output mode (RCR1.5=0).
3. RSYNC is in the input mode (RCR1.5=1).
4. RCHBLK is programmed to block Channel 24.
RECEIVE SIDE 2.048 MHz BOUNDARY TIMING (WITH ELASTIC STORE ENABLED) Figure 13–4
RSYSCLK
RSER
RSYNC 1 /
RMSYNC
RSYNC 2
RCHCLK
RCHBLK 3
CHANNEL 32 CHANNEL 1 CHANNEL 31
LSB MSB LSB MSB
RSIG
A B C D
CHANNEL 31 CHANNEL 1 CHANNEL 32
NOTE 4
A B C D
NOTES:
1. RSYNC is in the output mode (RCR1.5=0).
2. RSYNC is in the input mode (RCR1.5=1).
3. RCHBLK is programmed to block Channel 1.
4. RSIG normally contains the CAS multiframe alignment nibble (0000) in Channel 1.