Renesas SH7781 - Manual (Page 1305)

25. Audio Codec Interface (HAC)
Rev.1.00 Jan. 10, 2008 Page 1275 of 1658
REJ09B0261-0100
25.3.4 PCM Left Channel Register (HACPCML)
HACPCML is a 32-bit read/write register used for accessing the left channel of the codec in
digital audio recording or stream playback. To transmit the PCM playback left channel data to the
codec, write the data to HACPCML. To receive the PCM record left channel data from the codec,
read HACPCML. The data is left justified when accommodating a codec with ADC/DAC
resolution of 20 bits or less.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
Bit:
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Initial value:
R R R R R R R R R R R R R/W R/W R/W R/W
R/W R/W R/W R/W R/W R/W R/W R/W
R/W:
Bit:
Initial value:
R/W:
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
R/W R/W R/W R/W R/W R/W R/W R/W
D19 D18 D17 D16
D3 D2 D1 D0 D7 D6 D5 D4 D11 D10 D9 D8 D15 D14 D13 D12
0
Bit Bit Name
Initial
Value R/W Description
31 to 20
⎯ All
0 R Reserved
These bits are always read as 0. The write value should
always be 0.
19 to 0 D19 to D0 All 0 R/W Data 19 to 0
Write the PCM playback left channel data to these bits.
The HAC then transmits the data to the codec on an on-
demand basis.
Read these bits to get the PCM record left channel data
from the codec.