AK7750 Datasheet, PDF (9/77 Pages) Asahi Kasei Microsystems – Audio DSP with Built-in Hands-Free Phone Features

[ASAHI KASEI]
[AK7750]
Pin Pin Name
NO.
15 BITCLK_I
(EESEL=”L”)
EEADR
(EESEL=”H”)
16 LRCLK_I
(EESEL=”L”)
LRCLK
(EESEL=”H”)
17 DRDY
(EESEL=”H”)
DRDY/EECK
(EESEL=”H”)
18 JX0/SDIN5A
19 SDIN4/JX1
I/O
Function
Pin Classification
I Serial Bit Clock Input pin
Sytem Clock
SMODE=”H”: When master mode is used, connect this pin to
DVSS.
SMODE=”L”: 64fs clock is input during slave mode operation.
(48fs clock can be input except for CKSX=”L”).
BITCLK-I (64fs) can be used as master clock
(CKSX=”L”) during slave mode operation
I EEP Address Select pin
EEP
AK6512C: used at EEADR=”L”.
AK6514C: read data starting at 0000h when EEADR=”L”.
Read data starting at 2000h when EEADR=”H”.
I L/R Channel Select Input pin
System Clock
SMODE=”H”: When master mode is used, connect this pin to
DVSS.
SMODE=”L”: 1fs clock is input during slave mode operation.
I/O L/R Channel Select Input/Output pin
System Clock
SMODE=”H”: 1fs clock is output during master mode operation
SMODE=”L”: 1fs clock is input during slave mode operation
O Output Data Ready pin (Hi-Z)
µC
For microprocessor interface
Hi-Z state when CS =”H”.
O Output Data Ready pin for µC interface /
EEP/µC
EEPROM Serial Data Output pin.
Connect this pin to SCK pin of AK6512C/14C.
After an EEPROM data read, (EEST transition from “L” to “H”),
this pin is automatically switched to DRDY pin.
External Conditional pin/DSP Serial Data Input pin (pulled-
Digital
down).
Conditional input /
- For normal use, this is the external conditional jump pin Serial data input
(JXO).
- Input to the DSP’s SDIN5 port is possible by setting a
Control Register (normally SDIN5 is connected to ADC
Serial Output, refer to block diagram). Supports MSB-
justified 24 Bit /LSB-justified 24 Bit, 20 Bit, 16 Bit data
formats.
I DSP Serial Data Input pin/External Conditional pin (pulled-
Digital
down)
Serial data input
- Supports MSB-justified 24Bit /LSB-justified 24Bit, 20Bit, /conditional input
16bit formats
- This pin can be used as external conditional jump pin JX1
by setting a control register
[MS0296-E-00]
9
2005/03