ak4114 AKM Semiconductor, Inc., ak4114 Datasheet - Page 29

• Manufacturer Part Number: ak4114
• Description: High Feature 192khz 24bit Digital Audio Interface Transceiver
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The DIF0, DIF1 and DIF2 pins can select eight serial data formats as shown in Table 14. In all formats the serial data is
MSB-first, 2's compliment format. The SDTO is clocked out on the falling edge of BICK and the DAUX is latched on
the rising edge of BICK. BICK outputs 64fs clock in Mode 0-5. Mode 6-7 are Slave Modes, and BICK is available up to
128fs at fs=48kHz. In the format equal or less than 20bit (Mode0-2), LSBs in sub-frame are truncated. In Mode 3-7, the
last 4LSBs are auxiliary data (see Figure 29).
When the Parity Error, Biphase Error or Frame Length Error occurs in a sub-frame, AK4114 continues to output the last
normal sub-frame data from SDTO repeatedly until the error is removed. When the Unlock Error occurs, AK4114 output
“0” from SDTO. In case of using DAUX pin, the data is transformed and output from SDTO. DAUX pin is used in Clock
Operation Mode 1, 3 and unlock state of Mode 2.
The input data format to DAUX should be left justified except in Mode5 and 7(Table 14). In Mode5 or 7, both the input
data format of DAUX and output data format of SDTO are I
Master Mode of Mode4 and 5. In salve Mode, LRCK and BICK should be fed with synchronizing to MCKO1/2.
MS0098-E-04
Mode
Audio Serial Interface Format
0
1
2
3
4
5
6
7
DIF2 DIF1 DIF0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
preamble
0
1
0
1
0
1
0
1
3 4
24bit, Left justified
24bit, Left justified
24bit, Left justified
24bit, Left justified
24bit, Left justified
24bit, I
24bit, Left justified
24bit, I
MSB
23
LSB
Aux.
DAUX
2
2
7 8
S
S
AK4112 Audio Data (MSB First)
Figure 29. Bit configuration
Table 14. Audio data format
11 12
sub-frame of IEC958
16bit, Right justified
18bit, Right justified
20bit, Right justified
24bit, Right justified
24bit, Left justified
24bit, I
24bit, Left justified
24bit, I
- 29 -
2
S. Mode6 and 7 are Slave Mode that is corresponding to the
2
2
SDTO
S
S
H/L
H/L
H/L
H/L
H/L
L/H
H/L
L/H
LRCK
MSB
LSB
27 28 29 30 31
0
V U C P
I/O
O
O
O
O
O
O
I
I
64-128fs
64-128fs
64fs
64fs
64fs
64fs
64fs
64fs
BICK
I/O
O
O
O
O
O
O
[AK4114]
I
I
2004/03
Default