r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1310

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

25. Audio Codec Interface (HAC)
Notes: 1. CMDAMT and CMDDMT have no associated interrupts. Poll these bits until they are
Rev.1.00 Jan. 10, 2008 Page 1280 of 1658
REJ09B0261-0100
Bit
27 to 10
9
8
7 to 0
2. These bits are readable/writable. Writing 0 to the bit initializes it but writing 1 has no
Bit Name
⎯
PLTFUN
PRTFUN
⎯
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:
effect.
1.
2.
3.
Initialize CMDDMT and CMDAMT before first accessing a codec register after HAC
initialization by any reset event.
After making the settings in HACCSDR and HACCSAR, poll CMDDMT and
CMDAMT until they are cleared to 1, and then initialize these bits.
Now the next write to a register is available.
Initial
Value
All 0
0
0
All 0
R/W*
R
R/W
R/W
R
2
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
PCML TX Underrun
0: No PCML TX underrun has occurred.
1: PCML TX underrun has occurred because the codec
PCMR TX Underrun
0: No PCMR TX underrun has occurred.
1: PCMR TX underrun has occurred because the codec
Reserved
These bits are always read as 0. The write value should
always be 0.
has requested slot 3 data but new data is not written
to HACPCML.
has requested slot 4 data but new data is not written
to HACPCMR.