APR6016_15 Datasheet, PDF (5/24 Pages) Aplus Intergrated Circuits – 16 min Recording & Playback Voice IC

INTEGRATED CIRCUITS INC.--APR6016
Table 1 Sequential Command Timing
Command
NOP
SID
PWRUP
STOP_PWDN
SET_REC
REC
SET_PLAY
PLAY
SET_FWD
FWD
DIG_WRITE
DIG_READ
DIG_ERASE
STOP
Next command
Any Command
Any Command
PWRUP
STOP, STOP_PWDN, SET_REC, REC, NOP
STOP, STOP_PWDN, SET_FWD, FWD, SET_PLAY,
PLAY, NOP
SET_FWD, FWD, STOP, STOP_PWDN
Any Digital Command, STOP, STOP_PWDN
Note: For partial DIG_READ Tnext2 is measured from the extra
clock low that follows the rise of /CS, not from the rise of /CS
Any Command
Timing Symbol
Tnext1
Tnext2
Tnext2
Within SAC
Low Time
Tnext3
Tnext4
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
command can follow them. These limits are shown
in the "Allowable 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
Instruction OpCode
Opcode
Allowable Follow
Name
(5bit) Parameters (15bit) on Commands
[op4-op0]
[Address MSB - Address LSB]
[Address 14 - Address 0]
Summary
NOP
SID
SET_FWD
FWD
PWPUP
STOP
[00000]
[Don't care]
All Commands
[00001]
[00010]
[00011]
[00100]
[Don't care]
All Commands
Sector Address
[A14 - A0]
SET_FWD, FWD,
STOP,
STOP_PWDN
[Don't care]
SET_FWD, FWD
STOP,STOP_PWDN
[A14-A10]: all zeros
[A9-A2]:EXTCLK divider ratio
[Al-A0]: Sample Rate
All Commands
Frequency
[00110]
[Don't care]
All Commands
STOP_PWDN [00111]
[Don't care]
PWRUP
No Operation
Causes the silicon ID to be read.
Starts a fast forward operation
from the sector address
specified.
Starts a fast forward operation
from the current sector address.
Resets the device to initial
conditions. Sets the sample
frequency and divider ratios.
Stops the current operation.
Stops the current operation.
Causes the device to enter
power down mode.
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