PM7311 pmc-sierra, PM7311 Datasheet - Page 174

• 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
RWB
BUSY
The indirect access control bit (RWB) selects between a configure (write) or interrogate
(read) access to the tributary control configuration RAM. Writing a ‘0’ to RWB triggers an
indirect write operation. Data to be written is taken from the SBI EXTRACT Tributary
Indirect Access Data Register. Writing a ‘1’ to RWB triggers an indirect read operation. The
data read can be found in the SBI EXTRACT Tributary Indirect Access Data Register.
The indirect access status bit (BUSY) reports the progress of an indirect access. BUSY is set
high when a write to the Extract RAM Indirect Access Address Register triggers an indirect
access and will stay high until the access is complete. This bit should be polled to determine
when data from an indirect read operation is available in the Extract RAM Indirect Access
Control Data Register. In a write access this bit should be polled to determine when a new
operation may commence.
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
Released
174