S/UNI®-JET Data Sheet
Released
Register 30DH: SPLT Control
Bit
Type
Function
Unused
SRCZN
SRCF1
SRCB1
SRCG1
SRCM1
SRCM2
SRCC1
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
X
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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 zero, 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 one, 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 zero, 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
one, the M2 bit position is inserted with the value sampled on TPOH. The M2 octet is set to
logic zero (as required by the ATM Forum User Network Interface specification) by writing
this bit position with a logic one, 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 zero, 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
one, the M1 bit position is inserted with the value sampled on TPOH. The M1 octet is set to
logic zero (as required by the ATM Forum User Network Interface specification) by writing
this bit position with a logic one, and connecting the TPOH input to VSS.
SRCG1
The SRCG1 bit value ORed with input TPOHINS selects the source for the G1 octet on a bit
by bit basis. If the OR results in a logic zero, the G1 bit position is derived internally as
required. If the OR results in a logic one, the G1 bit position is inserted with the value
sampled on TPOH.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990267, Issue 3
109
PMC [ PMC-SIERRA, INC ]
