S5D2650 Samsung Semiconductor, Inc., S5D2650 Datasheet - Page 46

• Manufacturer Part Number: S5D2650
• Description: Multistandard Video Decoder/scaler
• Manufacturer: Samsung Semiconductor, Inc.

S5D2650 Data Sheet
1.10.3. 656 Op Code Vertical Transitions
The vertical transition locations of the various 656 Op Codes are shown in Figure 36 and Figure 37. Note that for
proper transition locations of the SAV and EAV Op Codes VSE=0 and VALIGN=1.
1.11. HOST INTERFACE
The S5D2650 supports the IIC serial interface for programming the chip registers.
1.11.1. IIC Interface
The two wire interface consists of the SCLK and SDAT signals. Data can be written to or read from the S5D2650.
For both read and write, each byte is transferred MSB first, and the data bit is valid when the SCLK is high.
To write to the slave device, the host initiates a transfer cycle with a START signal. The START signal is HIGH to
LOW transition on the SDAT while the SCLK is high. The host then sends a byte consisting of the 7-bit slave device
ID and a 0 in the R/W bit. The arrangement for the slave device ID and the R/W bit is depicted in Figure 38. AEX1
and AEX0 are configuration pins used to configure the S5D2650 to use one of the four addresses. Up to four
S5D2650’s can be used in one system each with a unique address.
Field
Field 2
Field 2
Field 2
Field 2
Field 1
Field 1
Field 1
Field 1
ELECTRONICS
Vertical Active
Vertical Active
Vertical Active
Vertical Active
Vertical Blank
Vertical Blank
Vertical Blank
Vertical Blank
Vertical
msb
1
Condition
Table 13: 656 and TASKB 656 Op Codes
1
Figure 38.
Start Active Video
Start Active Video
Start Active Video
Start Active Video
End Active Video
End Active Video
End Active Video
End Active Video
Horizontal
0
slave device ID
IIC Slave Device ID and R/W Byte
1
SAV / EAV Output Sequence --
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
Reference Output timing
A
1
00h
00h
00h
00h
00h
00h
00h
00h
B
pictures
AEX1
00h
00h
00h
00h
00h
00h
00h
00h
C
(active)
AEX0
ECh
DAh
ABh
C7h
B6h
9Dh
F1h
80h
D
(vbi)
MULTIMEDIA VIDEO
D’
7Fh
0Eh
62h
54h
49h
38h
24h
13h
R/W
lsb
656 FVH values
F
(low active)
1
1
1
1
0
0
0
0
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1
0
0
H
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0
1
0
1
0
1
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