PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Register 0139H: TTTP SECTION Indirect Data
Bit
Type
Function
Default
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DATA[15]
DATA[14]
DATA[13]
DATA[12]
DATA[11]
DATA[10]
DATA[9]
DATA[8]
DATA[7]
DATA[6]
DATA[5]
DATA[4]
DATA[3]
DATA[2]
DATA[1]
DATA[0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
DATA[15:0]:
The indirect access data (DATA[15:0]) bits hold the data transfer to or from the internal RAM
during indirect access. When RWB is set to logic 1 (indirect read), the data from the
addressed location in the internal RAM will be transfer to DATA[15:0]. BUSY should be
polled to determine when the new data is available in DATA[15:0]. When RWB is set to logic
0 (indirect write), the data from DATA[15:0] will be transferred to the addressed location in the
internal RAM. The indirect Data register must contain valid data before the indirect write is
initiated by writing to the Indirect Address Register.
DATA[15:0] has a different meaning depending on which address of the internal RAM is being
accessed.
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
197
PMC [ PMC-SIERRA, INC ]
