ST16C580_05 datasheet(8/39 Pages) EXAR

Nome de Peças	ST16C580

Descrição Electrónicos	UART WITH 16-BYTE FIFO?셲 AND INFRARED (IrDA) ENCODER/DECODER

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Fabricante Electrônico	EXAR [Exar Corporation]

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ST16C580

8

Rev. 1.22

Table 3, INTERNAL REGISTER DECODE

A2

A1

A0

READ MODE

WRITE MODE

General Register Set (THR/RHR, IER/ISR, MCR/MSR, LCR/LSR, SPR):

0

Receive Holding Register

Transmit Holding Register

0

1

Interrupt Enable Register

0

1

0

Interrupt Status Register

FIFO Control Register

0

1

Line Control Register

1

0

Modem Control Register

1

0

1

Line Status Register

1

0

Modem Status Register

1

Scratchpad Register

Baud Rate Register Set (DLL/DLM): Note *3

0

LSB of Divisor Latch

0

1

MSB of Divisor Latch

Enhanced Register Set (EFR, Xon/off 1-2): Note *4

0

1

0

Enhanced Feature Register

1

0

Xon-1 Word

1

0

1

Xon-2 Word

1

0

Xoff-1 Word

1

Xoff-2 Word

Note *3: These registers are accessible only when LCR bit-7 is set to a logic 1.

Note *4: Enhanced Feature Register, Xon 1,2 and Xoff 1,2 are accessible only when the LCR is set to “BF” (HEX).

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