r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1321

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Figure 25.4 Sample Flowchart for Off-Chip Codec Register Write
Notes: E1:
Input:
RetryCnt: Software counter for error detection
LoopCnt: Software counter for wait insertion
Write 0 to TSR.CMDAMT
Write 0 to TSR.CMDDMT
TSR.CMDAMT = 1 &
Clear RetryCnt to 0
Clear LoopCnt to 0
Set Addr. in CSAR
TSR.CMDDMT = 1
Set data in CSDR
Write to codec
Return
Loop count required in the target system
(21 < E1 < 1000)
Addr: Address of codec register to be written to
Data: Data to be written to codec register
Yes
No
E1 < LoopCnt 1
Wait for 1 μs
5 < RetryCnt
RetryCnt++
LoopCnt++
Error
Yes
Yes
Rev.1.00 Jan. 10, 2008 Page 1291 of 1658
Prerequisite:
ACR.TX12_ATOMIC = 1
25. Audio Codec Interface (HAC)
No
No
REJ09B0261-0100