AK8813 Datasheet, PDF (34/51 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHIKASEI
[AK8813/14]
♦ I²C Control Sequence
AK8813/14 is controlled by I²C bus. The slave address can be selected as 40H or 42H by selecting SELA
pin.
SELA
PULL Down [Low]
PULL UP [High]
SLAVE Address
0x40
0x42
Operation :
Write Sequence:
(a)1byte Write Sequence
S
Slave
Address
wA
Sub
Address
A
8-bits
1-
8-bits
1-
bit
bit
Data
8-bits
A Stp
1-
bit
(b) Sequential Write Operation
S
Slave
Address
w
A
Sub
Address(n)
A
8-bits
1-
8-bits
1-
bit
bit
Data(n)
8-bits
A Data(n+1) A ^{•••}
1-
8-bits
1-
bit
bit
Data(n+m)
8-bits
A stp
1-
bit
Read Sequence:
S
Slave
Address
wA
Sub
Address(n)
A
rS
Slave
Address
R
A
Data1
A
8-bits
1 8-bits 1
8-bits
1 8-bits 1
Data2
8-bits
A Data3 A ••• Data n Ā stp
1 8-bits 1
8-bits 1
S, rS : Start Condition
A : Acknowledge (SDA Low )
Ā : Not Acknowledge (SDA High)
stp : Stop Condition
R/W 1 : Read 0 : Write
: Master device (Host)
: Slave device (AK8813/14)
Rev.00
- 35 -
2004/Oct