PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 163

• Manufacturer Part Number: PM8610-BIAP
• Description: SBS Telecom Standard Product Data Sheet Preliminary
• Manufacturer: PMC [PMC-Sierra, Inc]

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000168, Issue 3
Register 067H: OSTA Tributary Output Enable Indirect Access Control Register
RWB
HST_ADDR_ERR
BUSY
Bit
Bit 15-8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
The indirect access control bit (RWB) selects between a configure (write) or interrogate
(read) access to the tributary output enable register. Writing a ‘0’ to RWB triggers an indirect
write operation. Data to be written is taken from the Output Enable Indirect Access Data
Register. Writing a ‘1’ to RWB triggers an indirect read operation. The data read can be
found in the Tributary Output Enable Indirect Access Data Register.
When set following a host read this bit indicates that an illegal host access was attempted. An
illegal host access occurs when an attempt is made to access an out of range tributary. Out of
range tributaries accesses occur when SBI[2:0] is not in the range 1-4, SPE[1:0] is not in the
range 1-3 and TRIB[4:0] is not in the range 1-28 for T1s, not in the range 1-21 for E1s and
not equal to 1 for the remaining tributary types. This bit is cleared when this register is read.
The indirect access status bit (BUSY) reports the progress of an indirect access. BUSY is set
high when a write to the Tributary Output Enable Indirect Access Control Register triggers an
indirect access and will stay high until the access is complete. This register should be polled
to determine when data from an indirect read operation is available in the Tributary Output
Enable Indirect Access Data register or to determine when a new indirect write operation may
commence.
Type
R
R
R
R
R
R
R
R/W
R
Function
Unused
BUSY
HST_ADDR_ERR
Unused
Unused
Unused
Unused
RWB
Unused
SBS Telecom Standard Product Data Sheet
Default
0
0
0
0
0
0
0
0
0
Preliminary
163