APR6016 datasheet(9/24 Pages) APLUS

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Preliminary

APR6016 Data Sheet

Voice Recording & Playback Device

Page 9

Revision 1.0

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

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 APR6016

device code is binary 0010 as shown in Figure 10 The last

seven bits are random data and should be ignored.

Figure 10 SID Bit Stream

S ID Com m and

Next Com m and

/C S

SCLK

C D S O utput D ata

S ID O utpu t D ata

Lbat

OVF

EOD

Illegal Address

D10

D11

D12

D13

D14

Product

Family

D19

Device

Code

APR60XX Series

Family (Binary)

APR6016 Device

Code (Binary)

Ignore These

Bits

First bit shifted out

Last bit shifted out

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