PM7311 pmc-sierra, PM7311 Datasheet - Page 159

• Manufacturer Part Number: PM7311
• Description: Freedm 84a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021832, Issue 2
Register 0x400: TCAS Indirect Context RAM Link Select
This register provides the link number used to access the TCAS Context RAM. Writing to this
register triggers an indirect register access.
Reserved:
The reserved bits must be set low for correct operation of the FREEDM 84A1024 device.
TRIB[4:0], SPE[1:0] and SBI
RWB
The TRIB[4:0], SPE[1:0] and SBI fields are used to fully specify to which SBI tributary the
context RAM write or read operation will apply.
TRIB[4:0] specifies the SBI tributary number within the SBI SPE as specified by the
SPE[1:0] and SBI fields. Legal values for TRIB[4:0] are b’00001’ through b‘11100’. Legal
values for SPE[1:0] are b’01’ through b‘11’. SBI must be written to a logic one in the
FREEDM 84A1024 device.
The indirect access control bit (RWB) selects between a configure (write) or interrogate
(read) access to the context RAM. Writing a logic zero to RWB triggers an indirect write
operation. Data to be written is taken from the LEN and SBI_MODE[2:0] bits of the TCAS
Indirect Context RAM Data register. Writing a logic one to RWB triggers an indirect read
operation. The data read can be found in the LEN and SBI_MODE[2:0] bits of the TCAS
Indirect context RAM Data register.
Bit
Bit 31
To
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Type
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
Function
Unused
BUSY
RWB
Reserved
Reserved
SBI
SPE[1]
SPE[0]
TRIB[4]
TRIB[3]
TRIB[2]
TRIB[1]
TRIB[0]
Default
X
X
0
0
0
0
0
0
0
0
0
0
0
Released
159