STV3550 datasheet(125/144 Pages) STMICROELECTRONICS

No. de pieza	STV3550

Descripción Electrónicos	LCD and Matrix Display TV Processor

PDF	144 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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STV3550

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more. When there is nothing more to send, a TxEmpty interrupt would tell the driver that everything

has been transmitted.

When receiving, the driver could use RxBufFull to interrupt every time a character arrived.

Alternatively, if data is coming in back-to-back, it could use RxHalfFull to interrupt it when there was

more than 8 characters in the input FIFO to read. It would have as long as it takes to receive 8

characters to respond to this interrupt before data could overrun. If less than 8 characters streamed

in, and no more were received for at least a time-out period, the driver could be woken up by one of

the two time-out interrupts, TimeoutNotEmpty or TimeoutIdle.

Figure 74: ASC Transmission

Figure 75: ASC Reception

Idle

TxEmpty Interrupt

Output Shift Register

Transmission

ASCTxBuffer Register

char 2

char 1

char 2

char 3

char 1

char 2

char 3

Write char1 Write char2

Write char3

TxHalfEmpty Interrupt

Idle

RxBufFull

Input Shift Register

Receive

ASCRxBuffer Register

char1

char 2

char 1

char 2

char 3

char 1

char 2

char 3

STV3550 Datasheet(PDF) 125 Page - STMicroelectronics