AK8859VQ Datasheet, PDF (43/73 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

[AK8859VQ]
[8.] Device control interface
The AK8859VQ is controlled via I²C bus control interface, as described below.
[8.1.] I²C bus SLAVE Address
The I²C slave address can be selected by a SELA pin setting of either [1000100] and [1000101].
Slave Address
SELA pin status MSB
LSB
Pulldown [Low] 1
0 0 0 1 0 0 R/W
Pullup [High] 1
0 0 0 1 0 1 R/W
[8.2.] I²C control sequence
[8.2.1.] Write sequence
After receiving a write-mode slave address first byte, the AK8859VQ receives the sub-address in the
second byte and data in the subsequent bytes. The write sequence may be single-byte or multi-byte.
(a) Single-byte Write sequence
S Slave Address
wA
8-bit
1-bit
Sub Address
8-bit
A
Data
A
stp
1-bit 8-bit
1-bit
(b) Multi-byte (m-bytes) Write sequence (Sequential Write Operation)
Slave
Sub
Data
Data
S
wA
A Data(n) A
A
A stp
Address
Address(n)
(n+1)
‘’’’’’’ (n+m)
8-bit
1-bit 8-bit
1-bit 8-bit
1-bit 8-bit ^1-bit
8-bit ^1-bit
[8.2.2.] Read sequence
After receiving a read-mode slave address as first byte, the AK8859VQ sends data in the second and
subsequent bytes.
Slave
Sub
Slave
S
wA
A rS
R A Data1 A Data2 A Data3 A
Address
Address(n)
Address
‘’’‘’
8-bit
1 8-bit
1
8-bit
1 8-bit 1 8-bit 1 8-bit 1
’‘’’’’‘’’ ‘’‘ Data n !A stp
8-bit 1
[8.2.3.] I²C General Call
AK8859VQ respond to General Call of I²C.
If second byte after receiving General Call is 0x06_(HEX), AK8859VQ initialize its register.
S General Call Address
0x00 _{(Hex. 8-bit)}
A Second Byte
1-bit 0x06 _{(Hex. 8-bit)}
A stp
1-bit
DATA[7:0]-pin
output:
Normal data output
H/L indefinite data output Low output(Default State)
MS1178-E-00
AKM Confidential
- 43 -
2010/04