AK4122VQ ETC [List of Unclassifed Manufacturers], AK4122VQ Datasheet - Page 18

• Manufacturer Part Number: AK4122VQ
• Description: 24 BIT 96KHZ SRC WITH DIR
• Manufacturer: ETC [List of Unclassifed Manufacturers]

ASAHI KASEI
When PORT2 and PORT3 are used as output port, the M/S2 pin and M/S3 pin select either master or slave mode. “H” is
master mode, “L” is slave mode. In master mode, MCLK should be input and the AK4122 outputs BICK and LRCK. In
slave mode, BICK and LRCK are input externally and MCLK is not needed. If PORT2 is used as input port, M/S2 pin
should be set “H” or “L”.
The audio interface should be controlled during PWN bit = “0”. When in BYPASS mode, BICK1, BICK2 and BICK are
fixed to 64fs.
(1) PORT1
Four kinds of data formats can be chosen with the DIF1-0 bits (Table 8). In all modes, the serial data is in MSB first, 2’s
compliment format. The SDTI is latched on the rising edge of BICK1. PORT1 corresponds to slave mode only.
Note: The DIF1-0 bits of the PORT1 should be set a value except “10” (I
MS0267-E-03
Master Mode and Slave Mode
Audio Interface Format
selected as an input port.
LRCK
BICK(32fs)
BICK(64fs)
SDTI(i)
SDTI(i)
Mode
0
1
2
3
M/S3 pin
M/S2 pin
H
H
L
L
H
H
L
L
DIF1
0 1
0 1
0
0
1
1
15 14 13
SDTI-15:MSB, 0:LSB
Don't Care
2 3
2 3
BYPS bit
Table 6. Master mode/Slave mode for PORT2
Table 7. Master mode/Slave mode for PORT3
BYPS bit
Table 8. Audio Interface Format for PORT1
DIF0
0
1
0
1
0
1
0
1
0
1
0
1
15 14 13 12
Lch Data
7 6 5 4 3 2 1 0 15 14 13
17
9
Figure 2. Mode 0 Timing
24bit, I
10
18
24bit, MSB justified
16bit, LSB justified
24bit, LSB justified
Data I/O
11 12 13 14 15 0 1 2 3
19 20
Data I/O
Output
Output
Output
Output
Output
Input Format
Input
I/O
I/O
I/O
2
S Compatible
- 18 -
1 0
31 0 1 2 3
Master, Bypass
Master, Bypass
Not Available
Not Available
Master, SRC
Master, SRC
Slave, SRC
Slave, SRC
Available
Don't Care
Mode
Mode
LRCK
H/L
H/L
L/H
H/L
15 14 13
Rch Data
7 6 5 4 3 2 1 0
17
9
10
18 19 20
2
≥ 32fs
≥ 48fs
≥ 48fs
≥ 48fs
BICK, LRCK
BICK, LRCK
BICK
S Compatible) when the DIR is
11 12 13 14 15
12
Output
Output
Input
Input
2 1 0
Default
31
0
0
15
1
1
[AK4122]
2004/08