AK7752 Datasheet, PDF (6/23 Pages) Asahi Kasei Microsystems – Audio/Hands Free DSP with Stereo CODEC

[AK7752]
No. Pin Name I/O
Function
Classification
33
DEXT3_OUT
O
HF Serial Data Output Pin
The data format is MSB justified.
TEST
EES Output Pin / Internal Reset Monitor Pin
34
EEST
/RSTO_N
O
Set by control resistor SEL_EEST.
SEL_EEST bit= “0”: EEST pin
SEL_EEST bit= “1”: RSTO_N Monitor internal reset process.
RSTO_N pin =“L”: Reset mode, RSTO_N pin =“H”: Exit reset mode.
EEPIF/
Monitor
35
DEXT2_OUT
O
HF Serial Data Output Pin
Compatible with MSB / LSB justified 24, 20 and 16 bits.
Digital Section
Serial Input
Data
36
DEXT1_OUT
O
HF Serial Data Input Pin
Compatible with MSB / LSB justified 24, 20 and 16 bits.
HF Serial Data Output Pin
37 DLINE_OUT O Compatible with MSB / LSB justified 24, 20 and 16 bits. Normally connected
to Bluetooth line (sending).
Serial Bit Clock Output Pin
38 BITCLK_O O
Normally goes “L” by control register setting.
Master Mode: Outputs 64fs or 32fs clock.
System Clock
Slave Mode: Outputs BITCLK_I clock.
SYNC Output Pin
39
SYNC_O
O
Normally goes “L” by control register setting.
Master Mode: Outputs 64fs or 32fs clock.
Slave Mode: Outputs SYNC_I clock.
40 DVDD - Power Supply for Digital Section (3.3V typical)
Digital
41 DVSS - Ground Pin for Digital Section 0V
Power Supply
Crystal oscillator output pin
42
XTO
O When a crystal oscillator is used, connect it between XTI and XTO.
System Clock
When an external clock is used, leave this pin open.
Crystal oscillator input pin
43
XTI
I Connect a crystal oscillator between this pin and the XTO pin, or input an
external CMOS clock to the XTI pin.
44 DVSS - Ground Pin for Digital Section 0V
Digital
45 DVDD - Power Supply for Digital Section (3.3V typical)
Power Supply
46
BVSS
-
Silicon Substrate Potential 0V
Connect to AVSS.
Analog
Power Supply
Control Mode select pin (Internal pull-down)
47 EESEL I EESEL pin = “L” : Normal mode
EEPIF
EESEL pin = “H”: In self-boot up mode using an AKM EEPROM, AK6514C
I²C BUS Select Pin (Internal pull-down)
48
I2CSEL
I
I2CSEL pin = “L”: Normal serial interface
I2CSEL pin = “H”: I2CBus selected mode. SCL and SDA are active.
I²C Select
I2CSEL should be connected to “L” (DVSS) or “H” (DVDD).
49
TESTI2
I
TEST pin (Internal pull-down)
Connect to DVSS.
TEST
MS0578-E-01-PB
-6-
2007/09