PM7312 pmc-sierra, PM7312 Datasheet - Page 135

• Manufacturer Part Number: PM7312
• Description: Freedm 32a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021833, Issue 2
Register 0x380: THDL Indirect Channel Select
This register provides the channel number used to access the transmit channel provision RAM.
Writing to this register triggers an indirect channel register access.
CHAN[9:0]
CRWB
CBUSY
The indirect channel number bits (CHAN[9:0]) indicate the channel to be configured or
interrogated in the indirect access.
The channel indirect access control bit (CRWB) selects between a configure (write) or
interrogate (read) access to the channel provision RAM. Writing a logic zero to CRWB triggers
an indirect write operation. Data to be written is taken from the Indirect Channel Data
registers. Writing a logic one to CRWB triggers an indirect read operation. The data read can
be found in the Indirect Channel Data registers.
The indirect access status bit (CBUSY) reports the progress of an indirect access. CBUSY is
set high when this register is written to trigger an indirect access, and will stay high until the
access is complete. At which point, CBUSY will be set low. This register should be polled to
determine when data from an indirect read operation is available in the THDL Indirect Channel
Data #1, #2 and #3 registers or to determine when a new indirect write operation may
commence.
Bit
Bit 31
To
Bit 16
Bit 15
Bit 14
Bit 13
To
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 32A1024L ASSP Telecom Standard Product Data Sheet
Function
Unused
CBUSY
CRWB
Unused
CHAN[9]
CHAN[8]
CHAN[7]
CHAN[6]
CHAN[5]
CHAN[4]
CHAN[3]
CHAN[2]
CHAN[1]
CHAN[0]
Default
X
0
0
X
0
0
0
0
0
0
0
0
0
0
Released
135