ML674001 Просмотр технического описания (PDF) - Oki Electric Industry

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ML674001

32-bit ARM-Based General-Purpose Microcontroller

Oki Electric Industry 

OKI Semiconductor

FEDL674001-01

ML674001/67Q4002/67Q4003

Pin Name

I/O

Description

DMA control signals

DREQ[0]

DREQCLR[0]

TCOUT[0]

DREQ[1]

DREQCLR[1]

TCOUT[1]

UART

SIN

SOUT

CTS

DSR

DCD

DTR

RTS

RI

I Ch 0 DMA request signal, used when DMA controller configured for

DREQ type

O Ch 0 DREQ signal clear request. The DMA device responds to this

output by negating DREQ.

O Indicates to Ch 0 DMA device that last transfer has started.

I Ch 1 DMA request signal, used when DMA controller configured for

DREQ type

O Ch 1 DREQ signal clear request. The DMA device responds to this

output by negating DREQ.

O Indicates to Ch 1 DMA device that last transfer has started

I SIO receive signal

O SIO transmit signal

I Clear To Send.

Indicates that modem or data set is ready to transfer data. Bit 4 in

modem status register reflects this input.

I Data Set Ready.

Indicates that modem or data set is ready to establish a

communications link with UART.

Bit 5 in modem status register reflects this input.

I Data Carrier Detect.

Indicates that modem or data set has detected data carrier signal. Bit

7 in modem status register reflects this input.

Data Carrier Detect

O Data Terminal Ready.

Indicates that UART is ready to establish a communications link with

modem or data set. Bit 0 in modem control register controls this

output.

O Request To Send.

Indicates that UART is ready to transfer data to modem or data set. Bit

1 in modem control register controls this output.

I Ring Indicator. Indicates that modem or data set has received

telephone ring indicator. Bit 6 in modem status register reflects this

input.

Primary /

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Secondary

Logic

Positive

Positive

Positive

Positive

Positive

Positive

Positive

Positive

Negative

Negative

Negative

Negative

Negative

Negative

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