Circuit Operating Descriptions
Samsung Electronics
7-9
7-3-3 Waveform Description
When micom accesses each device sharing bus, it falls the chip select signal of corresponding chip to
(/dspcs : ZIC1-123, /FLASH DSP : ZIC1-126, /DSPCS : DIC1-2, /DVD1CS : ZIC1-208, CSB : SIC1-10)
0 (Low) before trial.
So to speak, the bus is used by time-division as shown in Fig. 7-14.
Two and more devices can't be accessed simultaneously.
CH1
CH2
CH3
CH4
Fig. 7-14 Servo Chip Access
• CH1 : /DSPCS (ZIC1-123, DSP CHIP SELECT)
• CH2 : /FLASHCS (ZIC1-126, FLASH CHIP SELECT)
• CH3 : /WR 9ZIC1-129, MICOM OUTPUT WRITE SIGNAL)
• CH4 : /RD (ZIC1-128, MICOM OUTPUT READ SIGNAL)
Содержание DVD-E234
Страница 22: ...5 6 Samsung Electronics Disassembly and Reaasembly JACK PCB MAIN PCB 5 2 PCB Location Fig 5 6 PCB Location ...
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Страница 60: ...Schematic Diagrams Samsung Electronics 11 3 Only for DVD P230 OPTOIN 11 2 AV Decoder Main Micom Key ...
Страница 61: ...Schematic Diagrams 11 4 Samsung Electronics 11 3 Servo ...
Страница 62: ...Schematic Diagrams Samsung Electronics 11 5 11 4 Front Micom VFD Display ...
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