APR6016 datasheet(5/24 Pages) APLUS

5 / 24 page

Preliminary

APR6016 Data Sheet

Voice Recording & Playback Device

Page 5

Revision 1.0

Table 1

Sequential Command Timing

OpCode Command Description

Designers have access to a total of 14 OpCodes. These

OpCodes are listed in Table 2. The name of the Opcode

appears in the left hand column. The following two columns

represent the actual binary information contained in the 20 bit

data stream. Some commands have limits on which com-

mand can follow them. These limits are shown in the “Allow-

able Follow on Commands” column. The last column

summarizes each command.

Combinations of OpCodes can be used to accommodate

almost any memory management scheme.

Table 2

APR6016 Operational Codes

Current Command

Next command

Timing Symbol

NOP

SID

Any Command

Tnext1 5u SEC

PWRUP

Any Command

Tnext2 5m SEC

STOP_PWDN

PWRUP

Tnext2 5m SEC

SET_REC

REC

STOP, STOP_PWDN, SET_REC, REC,NOP

Within SAC Low Time

SET_PLAY

PLAY

STOP, STOP_PWDN, SET_FWD, FWD, SET_PLAY,PLAY, NOP

SET_FWD

FWD

SET_FWD, FWD, STOP, STOP_PWDN

DIG_WRITE

DIG_READ

DIG_ERASE

Any Digital Command, STOP, STOP_PWDN

Note: For partial DIG_READ Tnext3 is measured from the extra clock low that follows the

8K sampling rate: 376m SEC

4K sampling rate: 752m SEC

rise of /CS, not from the rise of /CS

Tnext3

STOP

Any Command

Tnext4 470m SEC

Instruction

Name

OpCode

(5 bits)

Opcode Parameters (15bits)

Allowable Follow

on Commands

Summary

[Op4 - Op0]

[Address MSB - Address LSB]

[Address 14 - Address 0]

NOP

[00000]

[Don’t Care]

All Commands

No Operation

SID

[00001]

[Don’t care]

All Commands

Causes the silicon ID to be read.

SET_FWD

[00010]

Sector Address

[A14 - A0]

SET_FWD,

FWD, STOP,

STOP_PWDN

Starts a fast forward operation from the

sector address specified.

FWD

[00011]

[Don’t care]

SET_FWD,

FWD, STOP,

STOP_PWDN

Starts a fast forward operation from the

current sector address.

PWRUP

[00100]

[A14-A10]: all zeros

[A9-A2]: EXTCLK divider ratio

[A1-A0]: Sample Rate Frequency

All Commands

Resets the device to initial conditions.

Sets the sample frequency and divider

ratios.

STOP

[00110]

[Don’t care]

All Commands

Stops the current operation.

STOP_PWDN

[00111]

[Don’t care]

PWRUP

Stops the current operation. Causes the

device to enter power down mode.

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