AK2308LV_05 Datasheet, PDF (7/31 Pages) Asahi Kasei Microsystems – SPEECH CODEC for Digital Key telephone

ASAHI KASEI
SERIAL ACCESS
Serial access can be done by CSN staying “L” during the serise of write cycle.
CSN
SCLK
123456789
16
1234
DATA ^Z 1 1 1 0 0 0 0 * D7
D0
Z
Instruction
Code
Address
”0000”
Write data to
Address”000”
EXCUTE!
1111
Instruction
Code
[AK2308LV]
89
15 16
D7
D1 D0 ^Z
Write data
EXCUTED!
READ
Continuous SCLK
CSN
SCLK
123456789
16
DATA ^Z 1 1 0 A3 A2 A1 A0 Z D7
D0
Read
Instruction
Address
Read Data
Data output starts at the falling edge of SCLK 8^th pulse
Can be going up at anytime
after SCLK 16^th pulse and before 32^nd pulse
1234
89
15 16
Z
1110
D7
D1 D0 ^Z
Read
Instruction
Read Data
Read period
until the earlier edge of either CSN rising or SCLK 16^th pulse
falling
Burst SCLK
CSN
SCLK
12345678
9
16
DATA ^Z 1 1 0 A3 A2 A1 A0 Z
D7
D0
Read
Instruction
Address
Read Data
Read output starts at the falling edge of SCLK 8^th pulse
Can be going up at anytime
after SCLK 16^th pulse and before 32^nd pulse
Z
MS0227-E-01
7
2005/12