ISD4004-08MS 参数 Datasheet PDF下载

ISD4004 Series

SPI PORT

The following diagram describes the SPI port and the control bits associated with it.

Figure 3: SPI Port

SPI CONTROL REGISTER

The SPI control register provides control of individual device functions such as Play, Record, Message

Cueing, Power-Up and Power-Down, Start and Stop operations, and Ignore Address pointers.

Table 3: SPI Control Register

Control

Register

RUN

=

=

P/R

=

=

1

0

1

0

Bit

Device Function

Enable or Disable an operation

Start

Stop

Selects Play or Record operation

Play

Record

IAB

=

=

1

0

Control

Register

PU

=

=

1

0

Bit

Device Function

Master power control

Power-Up

Power-Down

Ignore address control bit

Ignore input address register (A15–A0)

Use the input address register contents

for an operation (A15–A0)

Output of the row pointer register

Input address register

MC

=

=

1

0

Enable or Disable Message Cueing P15–P0

Enable Message Cueing

Disable Message Cueing

A15–A0

ISD

7