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| 型号： | ISD2340 |
| 厂商： | WINBOND ELECTRONICS CORP |
| 英文描述： | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| 中文描述： | 单芯片，多消息，语音记录/播放设备32 - ，40 - ，48 - ，和64秒时间间隔 |
| 文件页数： | 11/42页 |
| 文件大小： | 1356K |
| 代理商： | ISD2340 |
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ISD2532/40/48/64
Programming
The ISD2500 series is also ideal for playback-only applications, where single or multiple messages
are referenced through buttons, switches, or a microcontroller. Once the desired message
configuration is created, duplicates can easily be generated via a gang programmer.
7.2. O
PERATIONAL
M
ODES
The ISD2500 series is designed with several built-in Operational Modes that provide maximum
functionality with minimum external components. These modes are described in details as below. The
Operational Modes are accessed via the address pins and mapped beyond the normal message
address range. When the two Most Significant Bits (MSB), A7 and A8, are HIGH, the remaining
address signals are interpreted as mode bits and not as address bits. Therefore, Operational Modes
and direct addressing are not compatible and cannot be used simultaneously.
There are two important considerations for using Operational Modes. First, all operations begin initially
at address 0 of its memory. Later operations can begin at other address locations, depending on the
Operational Mode(s) chosen. In addition, the address pointer is reset to 0 when the device is changed
from record to playback, playback to record (except M6 mode), or when a Power-Down cycle is
executed.
Second, Operational Modes are executed when
CE
goes LOW. This Operational Mode remains in
effect until the next LOW-going
CE
signal, at which point the current mode(s) are sampled and
executed.
TABLE 2: OPERATIONAL MODES
Mode
[1]
Function
Typical Use
Jointly Compatible
[2]
M0
Message cueing
Fast-forward through messages
M4, M5, M6
M1
Delete
EOM
markers
Position
EOM
marker at the end of
the last message
M3, M4, M5, M6
M2
Not applicable
Reserved
N/A
M3
Looping
Continuous playback from Address 0
M1, M5, M6
M4
Consecutive
addressing
Record/playback multiple
consecutive messages
M0, M1, M5
M5
CE
level-activated
Allows message pausing
M0, M1, M3, M4
M6
Push-button control
Simplified device interface
M0, M1, M3
[1]
Besides mode pin needed to be “1”, A7 and A8 pin are also required to be “1” in order to enter into the related operational
mode.
[2]
Indicates additional Operational Modes which can be used simultaneously with the given mode.
Publication Release Date: June 2003
- 11 -
Revision 1.0
相关PDF资料 |
PDF描述 |
|---|---|
| ISD2540E | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| ISD2540P | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| ISD2540S | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| ISD2540X | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| ISD2548E | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
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