AK2306 Datasheet, PDF (20/38 Pages) Asahi Kasei Microsystems – Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER

ASAHI KASEI
SERIAL ACCESS
Serial access with CSN staying “L” during the serise of write cycle.
CSN
SCLK
123456789
16
DATA ^Z 1 1 1 1 0 0 0 * D7
D0
Z
Instruction
Code
Address
”000”
Write data to
Address”000”
EXCUTE!
[AK2306/LV]
1234
1111
Instruction
Code
89
15 16
D7
D1 D0 ^Z
Write data
NOT EXCUTED!
READ
CONTINOUS SCLK
CSN
Must go up once
SCLK
123456789
16
DATA ^Z 1 1 1 0 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
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
Must go up once
SCLK
12345678
9
16
DATA ^Z 1 1 1 0 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
Z
MS0093-E-04
20
2001/11