AK7750 Datasheet, PDF (8/77 Pages) Asahi Kasei Microsystems – Audio DSP with Built-in Hands-Free Phone Features

[ASAHI KASEI]
[AK7750]
(3) Pin Functional Description
Pin Pin Name I/O
Function
Pin Classification
NO.
1
TESTI2
2
EESEL
I Test pin (pulled-down). Connect to DVSS
I Control mode select pin (pulled-down)
Test
Control
EESEL=“L”: for general use
EESEL=“H”: program can be downloaded to the AKM’s
EEPROMs, AK6512C, AK6514C.
EESEL pin must be fixed to either “L” or “H” level.
3
SDOUT4A O DSP Serial Data Output pin
Digital
- MSB-justified 24 Bit data is output.
Serial data output
- ADC Data output, selected by Control Register setting.
4
SDOUT3
O DSP Serial Data Output pin
- MSB-justified 24 Bit data is output.
- “L” is output during the hands-free operation.
5
SDOUT2
O DSP Serial Data Output pin
- MSB-justified 24 Bit data is output.
6
SDOUT1
O DSP Serial Data Output pin
- MSB-justified 24 Bit data is output.
7
DVDD
- Digital Power Supply pin 3.3 V (typ)
Digital Power Supply
8
DVSS
- Digital Ground pin 0 V
Digital Power Supply
9
BVSS
- Ground pin (silicon substrate potential)
Analog Power Supply
Connect to AVSS.
10 DVSS
- Digital Ground pin 0 V
Digital Power Supply
11 DVDD
- Digital Power Supply pin 3.3 V (typ)
Digital Power Supply
12 CLKO
O Clock Output pin
Clock Output
Set by Control Register
13
BITCLK_O O Serial Bit Clock Output pin
System Clock
(EESEL=”L”)
SMODE=”H”: 64fs clock is output during master mode
operation.
SMODE=”L”: BITCLK-I clock is output during slave mode
operation (except for DIF mode 5 and 6)
BITCLK
I/O Serial Bit Clock Input/Output pin
System Clock
(EESEL=”H”)
SMODE=”H”: 64fs clock is output during master mode
operation.
SMODE=”L”: 64fs clock is input during slave mode operation
(48fs clock can be output, except when using
CKSX=L)
14 LRCLK_O O L/R Channel Select Output pin
System Clock
(EESEL=”L”)
SMODE=”H”: 1fs clock is output during master mode
operation.
SMODE=”L”: LRCLK-I clock is output during slave mode
operation (except for DIF mode 5 and 6).
EECS
O EEPROM Chip Select Output pin
EEP
(EESEL=”H”)
Connect to CS pin of AK6512C/14C.
[MS0296-E-00]
8
2005/03