Renesas SH7781 - Manual (Page 1316)

25. Audio Codec Interface (HAC)
Rev.1.00 Jan. 10, 2008 Page 1286 of 1658
REJ09B0261-0100
25.4 AC 97 Frame Slot Structure
Figure 25.2 shows the AC97 frame slot structure. This LSI supports slots 0 to 4 only. Slots 5 to 12
(hatched area) are out of scope.
Slot No.
TAG
CMD
Data CMD
Addr PCML
Front LINE1
DAC PCMR
Front PCM
Center PCMR
Surr PCML
Surr PCM
LFE HSET
DAC IO
CTRL LINE2
DAC
0 1 2 3 4 5 6 7 8 9 10 11 12
HAC_SYNC
HAC_SDOUT (transmit)
HAC_SDIN (receive)
TAG
Status
Data Status
Addr PCM
Left LINE1
ADC PCM
Right PCM
MIC Reser
ved Reser
ved Reser
ved HSET
ADC IO
Status LINE2
ADC
Figure 25.2 AC97 Frame Slot Structure
Table 25.3 AC97 Transmit Frame Structure
Slot Name Description
0 SDATA_OUT TAG Codec IDs and Tags indicating valid data
1 Control CMD Addr write port Read/write command and register address
2 Control DATA write port Register write data
3 PCM L DAC playback Left channel PCM output data
4 PCM R DAC playback Right channel PCM output data
5 Modem Line 1 DAC Modem 1 output data (unsupported)*
6 PCM Center Center channel PCM data (unsupported)*
7 PCM Surround L Surround left channel PCM data (unsupported)*
8 PCM Surround R Surround right channel PCM data (unsupported)*
9 PCM LFE LFE channel PCM data (unsupported)*
10 Modem Line 2 DAC Modem 2 output data (unsupported)*
11 Modem handset DAC Modem handset output data (unsupported)*
12 Modem IO control Modem control IO output (unsupported)*
Note: * There is no register for unsupported functions.