ak7780 AKM Semiconductor, Inc., ak7780 Datasheet - Page 8

• Manufacturer Part Number: ak7780
• Description: 24bit 5ch Adc & Src + Audio Dsp
• Manufacturer: AKM Semiconductor, Inc.

No
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50
MS0581-E-00-PB
INIT_RESET
P_DSPRST
BITCLK_I
P_CKRST
P_ADRST
LRCLK_I
Pin Name
DVDD18
DVDD18
DVDD
DVSS
CAD1
CAD0
DVSS
SCLK
SCL
RQ
SO
SI
I/O
O
I Serial bit clock input pin
I LR channel select clock input pin.
- Power supply pin for digital section 1.8V(typ)
- Ground pin for digital section 0.0V
I
I
I
I
I
I I2CSEL=”H” I
I
I I2CSEL= “H” I
I
I I2CSEL= “H” I
- Power supply pin for digital section 1.8V(typ)
- Ground pin for digital section 0.0V
- Power supply pin for digital section 3.3V(typ)
Reset pin ( for initialization)
Clock reset pin
ADC Reset pin
DSP Reset pin
I2CSEL= “L”
Microcomputer interface write request pin.
Microcomputer interface serial data input and serial data output control
pin.
I2CSEL= “L”
Microcomputer interface serial data clock pin.
Serial data output pin for microcomputer interfaces.
Use for initialization. When changing CKM[2:0], XTI or BITCLK_I input
frequency, this reset pin must be used.
When changing CKM[2:0] and XTI or BITCLK_I input frequency without
using INIT_RESET, pin control is necessary. The control register
R_CKRST_N can also rest the clock.
The control register R_ADRST_N can also reset the ADC.
P_ADRST = “L” and P_DSPRST = “L” state causes a system reset
(S_RESET).
The control register R_DSPRST_N can also rest the DSP.
P_ADRST = “L” and P_DSPRST = “L” state causes a system reset
(S_RESET).
After initial reset, if the microcomputer interface is not used, leave RQ = “H”
When SI is not used, leave SI = “L”.
When SCLK is not used, leave SCLK= “H”
When RQ = “H”, SO = Hi-Z
2
2
2
C Bus address setting pin 1
C Bus address pin 0
C bus data clock pin
- 8 -
Function
System Clock
Digital power
supply
Reset
Microcomputer
Interface.
I
Microcomputer
Interface.
I
Microcomputer
Interface.
I
Digital power
supply
Microcomputer
Interface.
2
2
2
C
C
C
Classification
2007/09
[AK7780]