AK7755EN_16 Datasheet, PDF (63/109 Pages) Asahi Kasei Microsystems – DSP with Mono ADC Stereo CODEC + Mic/Lineout Amp

[AK7755]
LRCK
LF
BICK
255 254 253 252 251
SDIN1, 2
M 22 21 20 19
SDOUT1, 2, 3
M 22 21 20 19
234 233 232 231 230 229 228 227 226 225 224 223 222 221 220 219
21L
tBCLK _{M 22 21 20 19}
2 1 L ^M:MSB,L:LSB
Left ch
tBCLK × 32
M 22 21 20 19
202 201 200 199 198 4 3 2 1 0
21L
21L
Right ch
tBCLK × 256
7. TDM Mode
Figure 42. PCM Long Frame 256fs
TDM interface formats shown below are available by setting TDM256 bit = “1”. BITFS[1:0] bits should
be set to 3h since BICK is fixed to 256fs.
Mode
0
1
2
3
4
5
6
7
8
9
10
11
LRIF[1:0]
0h
0h
0h
1h
1h
1h
2h
2h
2h
3h
3h
3h
TDMMODE[1:0]
0h
1h
2h
0h
1h
2h
0h
1h
2h
0h
1h
2h
Format
MSB 24-bit
MSB 24-bit
MSB 24-bit
I²S Compatible
I²S Compatible
I²S Compatible
PCM Short Frame
PCM Short Frame
PCM Short Frame
PCM Long Frame
PCM Long Frame
PCM Long Frame
Note
SLOT7 and 8 Inputs Not Available
SLOT5, 6, 7 and 8 Inputs Not Available
SLOT7 and 8 Inputs Not Available
SLOT5, 6, 7 and 8 Inputs Not Available
SLOT7 and 8 Inputs Not Available
SLOT5, 6, 7 and 8 Inputs Not Available
SLOT7 and 8 Inputs Not Available
SLOT5, 6, 7 and 8 Inputs Not Available
014006643-E-00
- 63 -
2014/10