ST92F120JR1Q7 datasheet(180/324 Pages) STMICROELECTRONICS

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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

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.

Figure 89. SCI -M Functional Schematic

Note: Some pins may not be available on some devices. Refer to the device Pinout Description.

Divider by 16

The control signals marked with (*) are active only in synchronous mode (SMEN=1)

Polarity

TXclk / CLKout

RX shift

TX buffer

TX shift

RTSEN (*)

Enveloper

AEN (*)

OUTSB (*)

Sout

AEN

RX buffer

Baud rate

generator

RXclk

OCKSB (*)

LBEN (*)

INTCLK

XBRG

AEN (*)

OCLK

XTCLK

DCDEN (*)

DCD

RTS

Sin

INPL (*)

LBEN

OUTPL (*)

INPEN (*)

OCKPL (*)

XRX

OCLK

VR02054

ST92F120JR1Q7 데이터시트(PDF) 180 Page - STMicroelectronics

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