
PM7346 S/UNI-QJET
DATASHEET
PMC-960835
ISSUE 6
SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3
PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE
120
Register 00DH, 10DH, 20DH, 30DH: SPLT Control
Bit
Type
Function
Default
Bit 7
Unused
X
Bit 6
R/W
SRCZN
0
Bit 5
R/W
SRCF1
0
Bit 4
R/W
SRCB1
0
Bit 3
R/W
SRCG1
0
Bit 2
R/W
SRCM1
0
Bit 1
R/W
SRCM2
0
Bit 0
R/W
SRCC1
0
SRCC1:
The SRCC1 bit value ORed with input TPOHINS selects the source for the
C1 octet on a bit by bit basis. If the OR results in a logic 0, the C1 bit position
is derived internally as specified by the FIXSTUFF bit in the SPLT
Configuration Register. If the OR results in a logic 1, the C1 bit position is
inserted with the value sampled on TPOH.
SRCM2:
The SRCM2 bit value ORed with input TPOHINS selects the source for the
M2 octet on a bit by bit basis. If the OR results in a logic 0, the M2 bit position
is derived internally as specified by the M2TYPE bit in the SPLT Configuration
Register. If the OR results in a logic 1, the M2 bit position is inserted with the
value sampled on TPOH. The M2 octet is set to logic 0 (as required by the
ATM Forum User Network Interface specification) by writing this bit position
with a logic 1, and connecting the TPOH input to VSS.
SRCM1:
The SRCM1 bit value ORed with input TPOHINS selects the source for the
M1 octet on a bit by bit basis. If the OR results in a logic 0, the M1 bit position
is derived internally as specified by the M1TYPE bit in the SPLT Configuration
Register. If the OR results in a logic 1, the M1 bit position is inserted with the
value sampled on TPOH. The M1 octet is set to logic 0 (as required by the
ATM Forum User Network Interface specification) by writing this bit position
with a logic 1, and connecting the TPOH input to VSS.