PM4314 QDSX
DATA SHEET
PMC-950857
ISSUE 5
QUAD T1/E1 LINE INTERFACE DEVICE
Register 002H, 042H, 082H, and 0C2H:TX/RX Block Placement
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Unused
Unused
Unused
PRSMTX
PRSGTX
IBCDTX
XIBCTX
DJATTX
X
X
X
0
1
0
1
1
R/W
R/W
R/W
R/W
R/W
This register is used to configure the PRSM, PRSG, IBCD, XIBC, and DJAT
blocks to be on the transmit or the receive data paths.
PRSMTX:
The PRSMTX bit determines whether the PRSM block is placed on the
transmit or receive data paths. When PRSMTX is set to a logic 1, then the
PRSM block is moved to the transmit path and will be used to synchronize to
15
2 -1 PRBS sequences on the TDD[X] input. When the PRSM block is in the
transmit path, the TDUAL bits (in registers 001H, 041H, 081H, and 0C1H)
and the TDUAL input pin must be set to logic 0 for proper operation. When
PRSMTX is set to a logic 0, then the PRSM block is moved to the receive
15
path and will be used to synchronize to 2 -1 PRBS sequences from the
analog RXTIP[X] and RXRING[X] inputs.
PRSGTX:
The PRSGTX bit determines whether the PRSG block is placed on the
transmit or receive data paths. When PRSGTX is set to a logic 1, then the
PRSG block is moved to the transmit path and can be used to insert the
15
2 -1 PRBS sequence into the transmit data. When the TDUAL bit or the
TDUAL pin are logic 1, then the PRSG has no effect if placed in the transmit
path. When PRSGTX is set to a logic 0, then the PRSG block is moved to the
15
receive path and can be used to source an unframed 2 -1 PRBS sequence
to the RDD[X] output.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
60
PMC [ PMC-SIERRA, INC ]
