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參數(shù)資料
| 型號： | APR6008 |
| 廠商： | Aplus Integrated Circuits Inc. |
| 英文描述： | LJT 43C 23#20 20#16 PN WALL RE |
| 中文描述： | 錄音 |
| 文件頁數(shù)： | 5/23頁 |
| 文件大?。?/td> | 2267K |
| 代理商： | APR6008 |
Voice Recording & Playback Device
Revision 2.1
Page 5
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 APR Operational Codes
Current Command
Next command
Timing Symbol
NOP
SID
Any Command
T
next1 5u SEC
PWRUP
Any Command
T
next2 5m SEC
STOP_PWDN
PWRUP
T
next2 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 T
next2
is measured from the extra clock low that follows the 8K sampling rate: 376m SEC
rise of /CS, not from the rise of /CS
4K sampling rate: 752 m SEC
T
next3
STOP
Any Command
T
next4 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
SID
SET_FWD
[00000]
[00001]
[00010]
[Don’t Care]
[Don’t care]
Sector Address
[A14 - A0]
All Commands
All Commands
SET_FWD,
FWD, STOP,
STOP_PWDN
SET_FWD,
FWD, STOP,
STOP_PWDN
No Operation
Causes the silicon ID to be read.
Starts a fast forward operation from the
sector address specified.
FWD
[00011]
[Don’t care]
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
[Don’t care]
[Don’t care]
All Commands
Resets the device to initial conditions.
Sets the sample frequency and divider
ratios.
STOP
[00110]
[00111]
All Commands
PWRUP
Stops the current operation.
Stops the current operation. Causes the
device to enter power down mode.
STOP_PWDN
APR6008
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