APR6008 View Datasheet(PDF) - APLUS INTEGRATED CIRCUITS

Part Name

Description

Manufacturer

APR6008

Voice Recording & Playback Device 8 Minute Duration

APLUS INTEGRATED CIRCUITS 

APR6008

Reading the SID

Each device in the APR60XX series family contains an

embedded Silicon Identification (SID). The SID can be read

by the host processor to identify which family / family member

is being used. Reading the device SID requires issuing two

OpCode commands; a SID command followed by any other

command, usually a NOP command. The device will clock

the SID data out on the DO pin as the command that follows

the SID command is clocked in. Figure 9 is a diagram that

describes the process necessary for reading SID information.

Figure 9 SID Timing

SCLK

/C S

DI

DO

SID Command

CDS Output Data

Next Command

SID O utput Data

The SID information follows the format given in Figure 10.

The first bit shifted out, D0, is the Overflow bit. The Overflow

bit is set to a binary 1 if an attempt was made to record

beyond the available memory. The Overflow bit is set to a 0 if

an overflow has not occurred. This bit is cleared after it has

been read. The D1 bit is the End Of Data (EOD) bit. The EOD

bit is set when the device stops playing or fast forwarding as

a result of EOD bit in memory. The EOD bit is cleared after it

has been read. The D2 bit is the Illegal Address Bit. The Ille-

gal Address Bit is set whenever an illegal address is sent to

the device. The D3 bit is the Lbat bit. This bit is set when the

device senses a supply voltage below specification. The fol-

lowing five bits represent the product family. The APR60XX

product family code is binary 01000 as shown in Figure 10.

The next four bits represent the device code. The APR6008

device code is binary 0100 as shown in Figure 10 The last

seven bits are random data and should be ignored.

Figure 10 SID Bit Stream

Last bit shifted out

First bit shifted out

~~ D19

D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Ignore These

Bits

Device

Code

Product

Family

OVF

EOD

Illegal Address

0 1 0 0 01 0 0 0

Lbat

APR6008 Device

Code (Binary)

APR60XX Series

Family (Binary)

Voice Recording & Playback Device

Revision 2.1

Page 9

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