r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 1481

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Figure 33.6 Sample Flowchart for Off-Chip Codec Register Read (2)
Notes:
Write 0 to RSR. STDRY.
Write 0 to RSR. STARY.
Assign HACCSAR read
Assign HACCSDR read
WaitLoop_CMDAMT
Clear LoopCnt2 to 0.
Send_read_request
Set RegN to CSAR.
Addr (R) = RegN?
Get_codec_data
WaitLoop_RSR
value to DataT.
value to Addr.
E2: Number required for the target system
LoopCnt2: Software counter for wait insertion
Addr: Variable to hold CSAR read value
DataT: Variable to hold CSDR read value
DataT return
Return
(13 < E2)
Error
Error
No
No
Yes
Yes
Yes
No
Input: RegN (address of the codec register to be read)
Input: RegN (address of the codec register to be read)
E2 < LoopCnt 2
Wait for 5ms
LoopCnt2 ++
Error
Error
Error
Yes
Rev. 1.00 Oct. 01, 2007 Page 1415 of 1956
Section 33 Audio Codec Interface (HAC)
No
REJ09B0256-0100