ST92196A STMicroelectronics, ST92196A Datasheet - Page 208

• 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 COMMUNICATIONS INTERFACE (Cont’d)
BAUD RATE GENERATOR HIGH REGISTER
(BRGHR)
R252 - Read/Write
Reset value: undefined
BAUD RATE GENERATOR LOW REGISTER
(BRGLR)
R253 - Read/Write
Reset value: undefined
Bit 15:0 = Baud Rate Generator MSB and LSB.
The Baud Rate generator is a programmable di-
vide by “N” counter which can be used to generate
the clocks for the transmitter and/or receiver. This
counter divides the clock input by the value in the
Baud Rate Generator Register. The minimum
baud rate divisor is 2 and the maximum divisor is
2
tor, the divisor value is immediately loaded into the
counter. This prevents potentially long random
counts on the initial load. If set to 0 or 1, the Baud
Rate Generator is stopped.
INPUT CONTROL (SICR)
R254 - Read/Write
Reset value: 0000 0011 (03h)
Bit 7 = Reserved.
BG15
16
BG7
15
7
7
-
-1. After initialization of the baud rate genera-
BG6
BG14
INPL
BG5
BG13
-
BG4
BG12
-
BG3
BG11
-
BG2
INPEN
BG10
BG1
BG9
-
BG0
BG8
0
0
-
8
- SERIAL COMMUNICATIONS INTERFACE (SCI)
Bit 6 = INPL: SIN Input Polarity .
0: Polarity not inverted.
1: Polarity inverted.
Note: INPL only affects received data. In Auto-
Echo mode SOUT = SIN even if INPL is set. In
Loop-Back mode the state of the INPL bit is irrele-
vant.
Bit 5:3 = Reserved.
Bit 2 = INPEN: Input Disable .
0: Enable SIN input
1: Disable SIN input
Bit 1:0 = Reserved.
OUTPUT CONTROL (SOCR)
R255 - Read/Write
Reset value: 0000 0001 (01h)
Bit 7 = OUTPL: SOUT Output Polarity.
0: Polarity not inverted.
1: Polarity inverted.
Note: OUTPL only affects the data sent by the
transmitter section. In Auto-Echo mode SOUT =
SIN even if OUTPL=1. In Loop-Back mode, the
state of OUTPL is irrelevant.
Bit 6 = OUTSB: SOUT Output Stand-By Level .
0: SOUT stand-by level is HIGH.
1: SOUT stand-by level is LOW.
Bit 5:0 = Reserved.
OUTPL
7
OUTSB
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