ST16C1551 View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

ST16C1551

2.97V TO 5.5V UART WITH 16-BYTE FIFO

Exar Corporation 

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ST16C1550/51

2.97V TO 5.5V UART WITH 16-BYTE FIFO

TABLE 8: UART RESET CONDITIONS

REGISTERS

RESET STATE

DLL

Bits 7-0 = 0xXX

DLM

Bits 7-0 = 0xXX

RHR

Bits 7-0 = 0xXX

THR

Bits 7-0 = 0xXX

IER

Bits 7-0 = 0x00

FCR

Bits 7-0 = 0x00

ISR

Bits 7-0 = 0x01

LCR

Bits 7-0 = 0x00

MCR

Bits 7-0 = 0x00

LSR

Bits 7-0 = 0x60

MSR

Bits 3-0 = Logic 0

Bits 7-4 = Logic levels of the inputs inverted

SPR

Bits 7-0 = 0xFF

I/O SIGNALS

TX

RTS#

DTR#

RST

INT

RESET STATE

Logic 1

Logic 1

Logic 1

Logic 1

Three-State Condition

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REV. 4.2.0

24

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