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Semiconductor

ML670100

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PIN DESCRIPTIONS (Cont.)

Type

Signal Name I/O Direction Description

Bus

control

nBREQ

Input

This input is a bus request signal from an external device.

It represents a secondary function for I/O port PIO7[6].

signals nBACK

Output

This output is an acknowledgment signal to a bus request signal

from an external device.

It represents a secondary function for

I/O port PIO7[7].

Interru-

pts

nEFIQ

Input

This input is an external fast interrupt request (FIQ). When

accepted, the request is processed as an FIQ exception.

nEIR[7:0]

Input

This inputs are external interrupt requests.

They represent

secondary functions for I/O port PIO3[7:0].

Timers TMIN[5:0]

Input

These pins function as capture trigger input pins for Flexible

Timer channels 5-0 in capture mode. They represent secondary

functions for I/O port PIO4[5:0].

TMOUT[5:0] Output

These pins function as output pins for Flexible Timer channels

5-0 in compare output or PWM mode. They represent

secondary functions for I/O port PIO4[5:0].

TMCLK[1:0] Input

These pins function as Flexible Timer channels 1 and 0 clock

input pins.

They represent secondary functions for I/O port

PIO4[7:6].

Serial

ports

ASI_TXD

Output

This output is the transmit data for the Asynchronous Serial

Interface.

It represents a secondary function for I/O port

PIO5[7].

ASI_RXD

Input

This input is the receive data for the Asynchronous Serial

Interface.

It represents a secondary function for I/O port

PIO5[6].

CSI0_TXD

Output

This output is the transmit data for the Clock Synchronous

Serial Interface 0.

It represents a secondary function for I/O

port PIO5[2].

CSI0_RXD

Input

This input is the receive data for the Clock Synchronous Serial

Interface 0.

It represents a secondary function for I/O port

PIO5[1].

CSI0_SCLK

Bidirectional This pin accepts/provides clock signal for the Clock

Synchronous Serial Interface 0.

It represents a secondary

function for I/O port PIO5[0].

CSI1_TXD

Output

This output is the transmit data for the Clock Synchronous

Serial Interface 1.

It represents a secondary function for I/O

port PIO5[5].

CSI1_RXD

Input

This input is the receive data for the Clock Synchronous Serial

Interface 1.

It represents a secondary function for I/O port

PIO5[4].

CSI1_SCLK

Bidirectional This pin accepts/provides clock signal for the Clock

Synchronous Serial Interface 1.

It represents a secondary

function for I/O port PIO5[3].

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