ISD4004 Datasheet, PDF (11/28 Pages) Winbond – Single-Chip Voice Record/Playback Devices 8-, 10-, 12-, and 16-Minute Durations

SPI PORT
The following diagram describes the SPI port and the control bits associated with it.
Figure 3: SPI Port
ISD4004 Series
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.
Control
Register
Bit
Table 3: SPI Control Register
Device Function
Control
Register
Bit
Device Function
RUN
Enable or Disable an operation PU
Master power control
= 1 Start
= 0 Stop
= 1 Power-Up
= 0 Power-Down
P/R
Selects Play or Record operation IAB
Ignore address control bit
=1
=0
Play
Record
=1
=0
Ignore input address register (A15–A0)
Use the input address register contents
for an operation (A15–A0)
MC
Enable or Disable Message Cueing P15–P0
Output of the row pointer register
=1
=0
Enable Message Cueing
Disable Message Cueing
A15–A0
Input address register
ISD
7