ak7746 ETC-unknow, ak7746 Datasheet - Page 5

• Manufacturer Part Number: ak7746
• Description: Audio With 5-channel 24-bit Input
• Manufacturer: ETC-unknow

(2) Pin function
[MS0369-E00]
[ASAHI KASEI]
Pin No
10
11
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
INIT_RESET
SDIN4/JX2
SDIN3/JX1
S_RESET
Pin name
AINR5
AINL5
AINR6
AINL6
AINR7
AINL7
AINR8
AINL8
DVDD
DRDY
BVSS
DVSS
SCLK
RDY
RQ
CS
SO
SI
I/O
O Serial data output pin for Microcomputer interface.
O Data write ready output pin for Microcomputer interface.
O Output data ready pin for Microcomputer interface.
I ADC1 or ADC2 Rch single ended analog input 5
I ADC1 or ADC2 Lch single ended analog input 5
I ADC1 or ADC2 Rch single ended analog input 6
I ADC1 or ADC2 Lch single ended analog input 6
I ADC1 or ADC2 Rch single ended analog input 7
I ADC1 or ADC2 Lch single ended analog input 7
I ADC1 or ADC2 Rch single ended analog input 8
I ADC1 or ADC2 Lch single ended analog input 8
- Analog ground (Silicon base ground level)
- Digital Ground 0.0V
- Digital power supply 3.3V(typ)
I
I
I
I Serial data clock pin for Microcomputer interface.
I Reset pin ( for initialization )
I System Reset pin
I DSP serial data input pin / External condition jump pin
I DSP serial data input pin / External condition jump pin
Chip select pin for Microcomputer interface. (Internal pull-down)
Normaly leave OPEN or connect with DVSS.
Write request pin for Microcomputer interface.
Serial data input and serial data output control pin for Microcomputer
interface.
When SI is not used, leave SI=”L”.
When SCLK is not used, leave SCLK=”H”.
Used for initialization of the AK7746. When changing CKS1 or CKS0 and
changing XTI input frequency, this pin setting is necessary.
(Internal pull-down )
* Compatible with MSB justified 24 bits / LSB justified 24,20 and 16 bits
* It can change its function as a conditional jump pin JX2 by control register
setting (JX2_E).
(Internal pull-down )
* Compatible with MSB justified 24 bits / LSB justified 24,20 and 16 bits
* It can change its function as a conditional jump pin JX1 by control register
setting (JX1_E).
CS =”H” : SI can not input, SO,RDY,DRDY = Hi-Z.
CS =”H” : SO = Hi-Z.
CS =”H” : RDY = Hi-Z.
CS =”H” : DRDY = Hi-Z.
Connect with AVSS pin
For run-time data read out: RQ =”H”.
When Microcomputer interface is not used or during initial reset, leave
RQ =”L” : Microcomputer interface enable.
RQ =”H”.
- 5 -
Function
Analog Power supply
Digital Power supply
Digital section
Serial input data /
Conditional input
Digital section
Serial input data /
Conditional input
Analog input
Microcomputer
Interface
Reset
Classification
[AK7746]
2004/12