TMPR3927 datasheet(53/512 Pages) TOSHIBA

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Chapter 3 Pins

3-7

Signal Name

I/O

Description

DMA interface

DMAREQ [3:0]

DMA Request

DMA transfer request signals from an external I/O device.

The pins are multiplexed with PIO, TIMER, TCLK, SDCS[7], and CE[7].

Refer to “3.3 Pin Multiplexing” for details.

The pins are equipped with internal pull-up resistors.

DMAACK [3:0]

DMA Acknowledge

DMA transfer acknowledge signals to an external I/O device.

The pins are multiplexed with PIO, TIMER, SDCS[6], and CE[6].

Refer to “3.3 Pin Multiplexing” for details.

The pins are equipped with internal pull-up resistors.

DMADONE*

I/O

DMA Done

DMADONE is either used as an output signal that reports the termination of DMA

transfer or as an input signal that causes DMA transfer to terminate.

The pin is equipped with an internal pull-up resistor.

SIO interface

TXD [1:0]

SIO Transmit Data

Serial data output signals.

The TXD pins are multiplexed with PIO.

The pins are equipped with internal pull-up resistors.

RXD [1:0]

SIO Receive Data

Serial data input signals.

The RXD pins are multiplexed with PIO.

The pins are equipped with internal pull-up resistors.

RTS [1:0] *

Request to Send

RTS* signals.

The RTS pins are multiplexed with PIO, INT, DSF, and debug signal GPCST[3].

The pins are equipped with internal pull-up resistors.

CTS [1:0] *

Clear to Send

CTS* signals.

The CTS pins are multiplexed with PIO, INT, and debug signal GSDAO[1].

The pins are equipped with internal pull-up resistors.

SCLK

SIO Clock

SIO clock input signal. SIO0 and SIO1 share this signal.

The pin is equipped with an internal pull-up resistor.

Parallel interface

PIO [15:0]

I/O

PIO Port

The PIO[0] pin is dedicated to a PIO signal. The other pins, PIO[15:1], are

multiplexed with DMA, interrupt input, timer, serial interface, and SGRAM DSF

signals.

The pins are equipped with internal pull-up resistors.

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