MB86391 Datasheet, PDF (36/69 Pages) Fujitsu Component Limited. – MPEG2 1chip Audio/Video Encoder

FUJITSU LIMITED
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3.2.2 Serial Interface Send Operations
The serial interface supports the following send data formats
MODE
ASCII
Data32
FM1 FM2 Data section
bit count (N)
0 MSB
7
1
0
32
Description
ASCII code 0x00 to 0x7F and others
32−bit binary data (for others)
Fig. 3.2.2a-b shows serial interface send timings.
SCLK
SDATA OUT
FM1=0 ^{FM 2=}
Bit5
Bit6
Bit4
Bit3
Bit2
Bit1
Bit0 _Parity
Start Bit
Format
Stop Bit
Fig. 3.2.2a: Serial interface send timings (ASCII mode)
SCLK
SDATA OUT
FM1=1 FM2=0 Bit31
Bit30 Bit29 Bit28
Bit27
Bit0
Parity
Start Bit
Format
Stop Bit
Fig. 3.2.2b: Serial interface send timings (DATA32 mode)
There are 2 type transport mode (SCLK synchronization mode and start-stop synchronization
mode). When using start −stop synchronization mode, pull the SDATAOUT pin down with about
3.3kΩ. When using SCLK synchronization mode, pull the SDATAOUT pin up with about 3.3kΩ. It
is not possible to change the transport mode during working.
Use even parity from FM1 through DataN.
MB86391
Product Specification
Rev. 1.1
12, November 2001
32