APR6016 datasheet(6/24 Pages) APLUS

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Preliminary

APR6016 Data Sheet

Page 6

Voice Recording & Playback Device

Revision 1.0

The NOP command performs no operation in the device. It is

most often used when reading the current device status. For

more information on reading device status see the Current

Device Status section.

THE SID operation instructs the device to return the contents

of its silicon ID register. For more information see the Read-

ing the SID section.

The SET_FWD command instructs the device to fast forward

from the beginning of the sector specified in the OpCode

parameter field. The device will fast forward until either an

EOD bit, or the end of the sector is reached. If no EOD bit or

forthcoming command has been received when the end of

the sector is reached, the device will loop back to the begin-

ning of the same sector and begin the same process again. If

an EOD bit is found the device will stop and generate an

interrupt on the /INT pin. The output amplifiers are muted dur-

ing this operation.

The FWD command instructs the device to fast forward from

the start of the current sector to the next EOD marker. If no

EOD marker is found within the current sector the device will

increment to the next sequential sector and continue looking.

The device will continue to fast forward in this manner until

either an EOD is reached, a new command is sent, or the end

of the memory array is reached. When an EOD is reached

the device will stop and generate an interrupt on the /INT pin.

The output amplifiers are muted during this operation.

The PWRUP command causes the device to enter power up

mode and set the internal clock frequency and EXTCLK

divider ratio. The PWRUP command must be used to force

the device into power up mode before any commands can be

executed. To select an Internal oscillator frequency set the

[A1 - A0] bits according to the following binary values:

If you are using an external sample clock signal you must

also set the EXTCLK divider ratio. This divider ratio is equal

SET_REC

[01000]

Sector Address

[A14 - A0]

STOP,

STOP_PWDN,

SET_REC,

REC,NOP

Starts a record operation from the sector

address specified.

REC

[01001]

[Don’t care]

STOP,

STOP_PWDN,

SET_REC,

REC,NOP

Starts a record operation from the current

sector address.

DIG_ERASE

[01010]

Sector Address

[A14 - A0]

All Commands

Erases all data contained in specified sec-

tor. You must not erase a sector before

recording voice signals into it. You must

erase a sector before storing digital data in

it.

DIG_WRITE

[01011]

[A14 - A0][XXXX][D0 - D3004][XXXX]

All Commands

This command writes data bits D0 - D3003

starting at the specified address. All 3004

bits must be written.

DIG_READ

[01111]

Sector Address

[A14 - A0]

All Commands

This command reads data bits D0 - D3003

starting at the specified address.

SET_PLAY

[01100]

Sector Address

[A14 - A0]

STOP,

STOP_PWDN,

SET_FWD, FWD,

SET_PLAY,PLAY,

NOP

Starts a play operation from the sector

address specified.

PLAY

[01101]

[Don’t care]

STOP,

STOP_PWDN,

SET_FWD, FWD,

SET_PLAY,PLAY,

NOP

Starts a play operation from the current

sector address.

Instruction

Name

OpCode

(5 bits)

Opcode Parameters (15bits)

Allowable Follow

on Commands

Summary

[Op4 - Op0]

[Address MSB - Address LSB]

[Address 14 - Address 0]

Sample rate

6.4 kHz

4.0 kHz

8.0 kHz

5.3 kHz

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