4.2Signal Description

Table 4.3 Signal description

PIN

Signal name

I/O

Description

 

 

 

 

1

RESET-

I

Reset signal

 

 

 

 

3, 5, 7, 9, 11,

DD7-0

I/O

The low-order bus is a 8-bit bidirectional bus signal for

13, 15, 17, 18,

DD15-8

 

exchanging the status, data, and control data between the

16, 14, 12, 10,

 

 

host and ODD.

8, 6, 4

 

 

The high-order bus is used for 16-bit data transfers only.

21

DMARQ

O

Data request signal for DMA transfer

 

 

 

 

23

DIOW-

I

Write strobe signal.

 

 

 

 

25

DIOR-

I

Read strobe signal

 

 

 

 

27

IORDY

O

This is the ready signal for the host computer. The ODD

 

 

 

uses this signal to request an extension of the transfer cycle

 

 

 

when it cannot prepare a response to a data transfer request

 

 

 

from the host computer in time.

 

 

 

 

28

CSEL

I

Sets the ODD to the master (device 0) or slave (device 1).

 

 

 

Effective by jumpering.

 

 

 

 

29

DMACK-

I

Answer signal in response to DMARQ during DMA transfer

 

 

 

 

31

INTRQ

O

Interrupt signal to the host

 

 

 

 

32

IOCS16-

O

Indicates that the ODD is ready for 16-bit transfer when the

 

 

 

host addresses the 16-bit data port during PIO transfer.

36, 33, 35

DA2, 1, 0

O

Address signal used by the host to address the ODD task file

 

 

 

register

 

 

 

 

34

PDIAG-

I/O

Used by the slave (device 1) to notify the master (device 0)

 

 

 

that diagnostics ended

 

 

 

 

37

CS0-

O

Select signal used to select the command block register

 

 

 

 

38

SC1-

O

Select signal used to select the control block register

 

 

 

 

39

DASP-

I/O

When reset, slave (device 1) output signal indicating that the

 

 

 

slave (device 1) exists. Otherwise, the signal indicates that

 

 

 

the master (device 0) and slave (device 1) is performing

 

 

 

mechanical operation or a failure occurred.

2, 19, 22, 24,

Ground

-

Ground signal

26, 30, 40

 

 

 

 

 

 

 

4 - 4

C156-E142-02EN

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Fujitsu MCF3064AP, MCE3064AP, MCE3130AP manual Signal Description Signal description
Page 71 Page 73

MCE3130AP, MCE3064AP, MCF3064AP specifications

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