APR6016(2002) Ver la hoja de datos (PDF) - APLUS INTEGRATED CIRCUITS

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APR6016
(Rev.:2002)

Voice Recording & Playback Device 16 Minute Duration

APLUS INTEGRATED CIRCUITS 

Preliminary

APR6016 Data Sheet

Receiving Device Information

The device communicates data to the user by shifting out

data on the DO pin. The device will shift out data according to

the timing parameters given in figure 7. The device can shift

out three different types of data streams: Device status, Sili-

con ID, and user stored digital data. Device status and silicon

ID are described in the next two sections. Retrieval of user

data is described in the Reading Digital Data section.

Figure 7 Data Out Timing

/CS

~~

~~

SCLK

DI

Op4 Op3 Op2 Op1 ~~

A3

A2

A1

A0

DO

D0

D1

D2

D3~~ D15 D16

D17 D18

D19

TfcsDO

TfSCLK

ThzD0

Current Device Status (CDS)

As described in the previous section, three different types of

data streams are shifted out on the DO pin as data is shifted

in on the DI pin. One of these streams is the current device

status. The CDS will be shifted out unless the previous com-

mand is SID command. Figure 8 shows the format of the

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

flag. The Overflow flag is set to a binary 1 if an attempt was

made to record beyond the available memory. The Overflow

flag is set to a 0 if an overflow has not occurred. This flag is

cleared after it has been read. The D1 bit is the End of Data

flag. The EOD flag is set when the device stops playing, or

fast forwarding as a result of an EOD bit in memory. The EOD

flag is cleared after it has been read. The D2 bit is the Illegal

Address flag. The Illegal Address flag is set whenever an ille-

gal address is sent to the device. The D3 bit is the Lbat flag.

This flag is set when the device senses a supply voltage

below specification. The D4 bit is not used and should be

ignored. The last fifteen bits represent the address of the cur-

rent or last active sector.

Figure 8 Format for CDS 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

Sector Address LSB

Sector Address

Sector Address MSB

OVF

EOD

Illegal Address

Lbat

Page 8

Voice Recording & Playback Device

Revision 1.0

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