Serial Bus 1 - Sony DVP S530D Training Manual

Serial Bus 1

Bus 1 is used for communications between:
· System Control IC202
· Audio DSP IC501
· Audio 2 channel IC902
· Front, Rear, and Center D/A converters IC905 to IC907
System Control IC202 is the master IC. It sends and receives data on the
serial data in (SI1, at IC202/pin 79) and out (SO1, at IC202/pin 80) lines.
The data is always accompanied by serial clock (SC1, at IC202/pin 89)
from IC202. There are always communications present at IC202/pins
79,80 and 89 as long as there is power applied just like in serial bus 0.
Audio DSP IC501
Bi-directional communications between System Control IC202 and IC501
is similar to that with EEProm IC201. Communications between System
Control IC202 and Audio DSP IC501 are accomplished using:
· Two serial data lines (SO1 and SI1)
· Clock from IC202/pin 89
· Chip Select from IC601/pin 28
Periodically in IC202's routine, Audio DSP IC501 is chip selected. When
the chip select pin 62 line is brought low, data is transferred between the
ICs on the data lines (SO1 and SI1).
Audio 2 Channel D/A Converter IC902
Audio Front, Rear, and Center D/A Converters IC905 - IC907
System Control IC202 communicates with the remainder of the ICs on
the serial bus 1 lines in a unidirectional manner. Each one of these D/A
Converters has an individual chip select line from IC601. The SO1 data
line from IC202/pin 80 is common to the D/A Converters. Data applies
only to the D/A Converter when its chip line is low. The data as always is
accompanied by bit clock from IC202/pin 89.
25
IC Name
System Control IC202
Interface IC201-FL101
Bd
EEProm IC201-MB85 Bd
Audio DSP IC501
Audio 2 channel D/A IC902
Converter
Front, Rear, Center, IC905 - IC907
D/A Converter
IC Function
Number Function
Main Micro
Accepts user commands
(play, open tray, next, etc)
Stores servo info
Delays (echoes) for speaker
effects
D/A Converter for analog
audio
D/A Converter for 5.1 AC-3
signal.