st92f124 STMicroelectronics, st92f124 Datasheet - Page 212

• Manufacturer Part Number: st92f124
• Description: 8/16-bit Single Voltage Flash Mcu Family With Ram, E3 Tmemulated Eeprom, Can 2.0b And J1850 Blpd
• Manufacturer: STMicroelectronics

MULTIPROTOCOL SERIAL COMMUNICATIONS INTERFACE (SCI-M)
MULTIPROTOCOL SERIAL COMMUNICATIONS INTERFACE (Cont’d)
10.5.3 Functional Description
The SCI-M has four operating modes:
– Asynchronous mode
– Asynchronous mode with synchronous clock
– Serial expansion mode
– Synchronous mode
Figure 107. SCI -M Functional Schematic
Note: Some pins may not be available on some devices. Refer to the device Pinout Description.
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9
RXclk
AEN (*)
OCKSB (*)
INPEN (*)
OCKPL (*)
The control signals marked with (*) are active only in synchronous mode (SMEN=1)
TXclk / CLKout
LBEN (*)
XTCLK
OCLK
Baud rate
generator
OCLK
XRX
INTCLK
XBRG
Divider by 16
Divider by 16
DCDEN (*)
Polarity
DCD
Asynchronous mode, Asynchronous mode with
synchronous clock and Serial expansion mode
output data with the same serial frame format. The
differences lie in the data sampling clock rates
(1X, 16X) and in the protocol used.
Polarity
RTS
CD
1
0
1
0
CD
AEN (*)
RTSEN (*)
RX buffer
RX shift
register
register
Enveloper
TX buffer
TX shift
register
register
LBEN
INPL (*)
OUTPL (*)
OUTSB (*)
VR02054
AEN
Sout
Sin