SH7763 Datasheet, PDF (1470/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 33 Audio Codec Interface (HAC)
Initial
Bit
Bit Name Value R/W Description
9
PLTFUN 0
R/W*² PCML TX Underrun
0: No PCML TX underrun has occurred.
1: PCML TX underrun has occurred because the codec
has requested slot 3 data but new data is not written
to PCML.
8
PRTFUN 0
R/W*² PCMR TX Underrun
0: No PCMR TX underrun has occurred.
1: PCMR TX underrun has occurred because the codec
has requested slot 4 data but new data is not written
to PCMR.
7 to 0 
All 0 R
Reserved
Always 0 for read and write.
Notes: 1. CMDAMT and CMDDMT have no associated interrupts. Poll these bits until they are
read as 1 before writing a new command to HACCSAR/HACCSDR. When bit 19 (RW)
of HACCSAR is 0 and TX12_ATOMIC is 1, take the following steps:
1. Initialize CMDDMT and CMDAMT before first accessing a codec register after HAC
initialization by any reset event.
2. After making the settings in HACCSDR and HACCSAR, poll CMDDMT and
CMDAMT until they are cleared to 1, and then initialize these bits.
3. Now the next write to a register is available.
2. These bits are read/write. Writing 0 to the bit initializes it but writing 1 has no effect.
Rev. 1.00 Oct. 01, 2007 Page 1404 of 1956
REJ09B0256-0100