ST92F120JR9T datasheet(196/320 Pages) STMICROELECTRONICS

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SERIAL COMMUNICATIONS INTERFACE (SCI)

SERIAL COMMUNICATIONS INTERFACE (Cont’d)

Table 40. SCI Interrupt Vectors

Figure 98. SCI Interrupts: Example of Typical Usage

Interrupt Source

Vector Address

Transmitter Buffer or Shift Register Empty

Transmit DMA end of Block

xxx x110

Received Data Pending

Receive DMA end of Block

xxxx x100

Break Detector

Address Word Match

xxxx x010

Receiver Error

xxxx x000

INTERRUPT

BREAK

MATCH

ADDRESS

DATA

ADDRESS AFTER BREAK CONDITION

ADDRESS WORD MARKED BY D9=1

ADDRESS

INTERRUPT

D9=1

D9 ACTING AS DATA CONTROL WITH SEPARATE INTERRUPT

CHARACTER SEARCH MODE

INTERRUPT

VA00270

BREAK

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

INTERRUPT

DATA

ADDRESS

DATA

NO MATCH

ADDRESS

BREAK

DATA

NO MATCH

ADDRESS

MATCH

DATA

MATCH

DATA

CHAR MATCH

DATA

ADDRESS

DATA

D9=1

DATA

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