AK7755EN_16 Datasheet, PDF (34/109 Pages) Asahi Kasei Microsystems – DSP with Mono ADC Stereo CODEC + Mic/Lineout Amp

[AK7755]
CONT03: Delay RAM, DSP Input / Output Setting
W R Name D7 D6 D5 D4 D3
D2
D1
D0
Default
C3h 43h CONT03 0 0 0 0 BANK[3] BANK[2] BANK[1] BANK[0] 00h
D7, D6: DIF2[1:0] DSP DIN2 Input Format Select
DIF2 Mode DIF2[1:0] Input Data Format
0
00
MSB (24-bit)
(default)
1
01
LSB 24-bit
2
10
LSB 20-bit
3
11
LSB 16-bit
Set “00” for I²S compatible, PCM Short and PCM Long formats.
Set “11” when BITFS[1:0] bits (CONT01: D5, D4) = 2h (32fs).
D5, D4: DOF2[1:0] DSP DOUT2 Output Format Select
DOF2 Mode DOF2[1:0] Output Data Format
0
00
MSB (24-bit)
(default)
1
01
LSB 24-bit
2
10
LSB 20-bit
3
11
LSB 16-bit
Set “00” for I²S compatible, PCM Short and PCM Long formats.
Set “11” when BITFS[1:0] bits = 2h (32fs).
D3, D2, D1, D0: BANK[3:0]
DLRAM
Partition
mode
BANK
[3:0]
0
0000
1
0001
2
0010
3
0011
4
0100
5
0101
6
0110
7
0111
8
1000
9-15
1001
1111
DLRAM mode Setting
Delay RAM
Bank1
Bank0
Linear 20.4f
Ring 20.4f
0
8192 words
1024 words
7168 words
2048 words
6144 words
3072 words
5120 words
4096 words
4096 words
5120 words
3072 words
6144 words
2048 words
7168 words
1024 words
8192 words
0
N/A
(default)
014006643-E-00
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2014/10