Datasheet
____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108
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Bit 2: CRC-4 MF Sync Active (CRC4SA). This real-time status bit is set while the synchronizer is searching for the
CRC-4 MF alignment word.
Bit 1: CAS MF Sync Active (CASSA). This real-time status bit is set while the synchronizer is searching for the
CAS MF alignment word.
Bit 0: FAS Sync Active (FASSA). This real-time status bit is set while the synchronizer is searching for alignment
at the FAS level.
Register Name:
RBOC
Register Description:
Receive Bit-Oriented Code Register (T1 Mode Only)
Register Address:
base address + 0x18C
Bit # 7 6 5 4 3 2 1 0
Name - - RBOC5 RBOC4 RBOC3 RBOC2 RBOC1 RBOC0
Default 0 0 0 0 0 0 0 0
Bits 5 to 0: Rx Bit-Oriented Code (RBOC[5:0]). T1 ESF mode only. After a BOC has been validated per the
criteria specified by RBOCC.RBF, the BOC is
stored in this field where it can be read by software. The device
notifies software that a valid BOC is available by setting the BD bit in RLS7. S
etting BD can optionally drive an
interrupt request. Bit 0 is the first bit received. See section 10.11.4.2.
Register Name :
RSLC1, RSLC2, RSLC3
Register Description:
Receive SLC96 Data Link Registers (T1 Mode)
Register Address:
base address + 0x190, 0x194, 0x198
Bit # 7 6 5 4 3 2 1 0
RSLC1 C8 C7 C6 C5 C4 C3 C2 C1
RSLC2 M2 M1 S=0 S=1 S=0 C11 C10 C9
RSLC3 S=1 S4 S3 S2 S1 A2 A1 M3
Note: These registers have an alternate definition for E1 mode. See RAF, RNAF, and RSiAF.
See se
ction 10.11.16.
Register Name:
RAF
Register Description:
Receive Align Frame Register (E1 Mode)
Register Address:
base address + 0x190
Bit # 7 6 5 4 3 2 1 0
Name Si FAS6 FAS5 FAS4 FAS3 FAS2 FAS1 FAS0
Default 0 0 0 0 0 0 0 0
Note: This register has an alternate definition for T1 mode. See RSLC1.
The alig
n frame is the E1 frame containing the frame alignment signal (FAS). The bits of this register indicate the
first eight bits received in the most recent align frame. The bits are latched into this register at the start of the align
frame. The start of the align frame is indicated by the RAF status bit in RLS2-E1.
See Section 10.11.5.1.
Bit 7: International Bit (Si).
Bits 6 to 0: Frame Alignment Signal (FAS[6:0]). When a normal E1 signal is being received, FAS[6:0]=0011011.