AK4122A AKM [Asahi Kasei Microsystems], AK4122A Datasheet - Page 16

• Manufacturer Part Number: AK4122A
• Description: 24-Bit 96kHz SRC with DIR
• Manufacturer: AKM [Asahi Kasei Microsystems]

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The input source of the SRC can be switched between the outputs of the DIR, PORT1 or PORT2. The input source of the
PORT2 and PORT3 can be switched between the outputs of the SRC or BYPASS. When PORT2 is used as an input port,
PORT2 cannot be used as an output port. The signal path should be controlled during PWN bit = “0”. The Switch Names
(ISEL1-0, BYPS and OSEL) in
Default is Mode 0. (Path : PORT1 → SRC → PORT3)
After PDN pin = “L” → “H”, SDTIO pin of PORT2 is the input pin.
The DIF1-0 bits of the PORT1 should be set a value except “10” (I
selected as an input port.
Refer to
MS1076-E-01
Internal Signal Path
Table 6
Mode
and
0
1
2
3
4
5
6
7
8
9
PORT1
PORT2
Serial
Audio
Serial
Audio
Table 7
DIR
I/F
I/F
00: PORT1
01: PORT2
10: DIR
00: PORT1
01: PORT2
10: DIR
00: PORT1
10: DIR
00: PORT1
10: DIR
Input PORT
ISEL1-0 bit
for Master/Slave mode setting.
Figure 1
Figure 1. Connection Input Source & Output Source
ISEL1-0
correspond to the register bits that control the switch function. Refer to
SRC / Bypass
OPERATION OVERVIEW
1: Bypass
1: Bypass
BYPS bit
0: SRC
0: SRC
De-em
Filter
PLL
Table 1. Path Select
- 16 -
Output PORT
SRC
0: PORT3
1: PORT2
(Note
(Note
OSEL bit
14)
15)
BYPS
2
PORT1 → SRC → PORT3
PORT2 → SRC → PORT3
DIR → SRC → PORT3
PORT1 → PORT3
PORT2 → PORT3
DIR → PORT3
PORT1 → SRC → PORT2
DIR → SRC → PORT2
PORT1 → PORT2
DIR → PORT2
S Compatible) when the DIR is
OSEL
Path
PORT3
Serial
Audio
I/F
[AK4122A]
2010/05
Table
1.