Datasheet

____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108
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Register Name:
RCR1-T1
Register Description:
Receive Control Register 1 (T1 Mode)
Register Address:
base address + 0x204
Bit # 7 6 5 4 3 2 1 0
Name SYNCT RB8ZS RFM ARC SYNCC RJC SYNCE RESYNC
Default 0 0 0 0 0 0 0 0
Note: This register has an alternate definition for E1 mode. See RCR1-E1.
Bit 7: Sy
nc Time (SYNCT).
0 = Qualify 10 bits
1 = Qualify 24 bits
Bit 6: Rx B8ZS Enable (RB8ZS).
0 = B8ZS decoding disabled
1 = B8ZS decoding enabled
Bit 5: Rx Frame Mode Select (RFM).
0 = ESF framing mode
1 = D4 framing mode
Bit 4: Auto Resync Criteria (ARC).
0 = Resync on LOF or LOS event
1 = Resync on LOF only
Bit 3: Sync Criteria (SYNCC).
In D4 Framing Mode.
0 = Search for Ft pattern, then search for Fs pattern
1 = Cross couple Ft and Fs pattern (i.e. search for proper Ft and Fs pattern at the same time)
In ESF Framing Mode.
0 = Search for FPS pattern only
1 = Search for FPS and verify with CRC-6
Bit 2: Rx Japanese CRC-6 Enable (RJC).
0 = Use ANSI:AT&T:ITU CRC-6 calculation (normal operation)
1 = Use Japanese standard JT–G704 CRC-6 calculation
Bit 1: Sync Enable (SYNCE).
0 = Auto resync enabled
1 = Auto resync disabled
Bit 0: Resynchronize (RESYNC). When this bit is toggled from low to high, a resynchronization of the Rx side
framer is initiated. Must be cleared and set again for a subsequent resync.