ST92196A STMicroelectronics, ST92196A Datasheet - Page 188

• Manufacturer Part Number: ST92196A
• Description: 8/16-bit Mcu For Tv Applications With Up To 96k Rom, On-screen-display And 1 Or 2 Data Slicers
• Manufacturer: STMicroelectronics

SERIAL PERIPHERAL INTERFACE (Cont’d)
8.10.7 S-Bus Interface
The S-bus is a three-wire bidirectional data-bus,
possessing functional features similar to the I
bus. As opposed to the I
conditions are determined by encoding the infor-
mation on 3 wires rather than on 2, as shown in
Figure
Figure 77. Mixed S-bus and I
n
Figure 78. S-bus Configuration
n
SDA
SEN
SCL
START
78. The additional line is referred as SEN.
1
2
3
2
C-bus, the Start/Stop
2
C-bus System
4
5
VA00440
STOP
6
2
C-
SPI Working with S-bus
The S-bus protocol uses the same pin configura-
tion as the I
SDA lines. The additional SEN line is managed
through a standard ST9 I/O port line, under soft-
ware control (see
- SERIAL PERIPHERAL INTERFACE (SPI)
2
C-bus for generating the SCL and
Figure
74).
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