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参数资料
| 型号： | SA2532AS |
| 厂商： | SAMES |
| 英文描述： | VERSATILE SINGLE CHIP TELEPHONE |
| 中文描述： | 多功能单芯片电话 |
| 文件页数： | 5/22页 |
| 文件大小： | 583K |
| 代理商： | SA2532AS |
sames
SA2532
5/22
Dialling Functions
Valid Keys
The keypad of the SA2532 comprises a maximum of 20 keys (of which 3 have no function).
A Bi-polar scan technique is used so that the 20 keys are scanned in a 4 x 5 matrix using
only 8 pins.
A valid key is detected when one and only one contact closure is detected between a Row
and Column Pin. Key contacts are debounced to avoid incorrect detection.
Dial Mode Selection
The default mode (LD or MF) can be selected by the Mode pin. When default LD mode
is selected, a temporary change to MF can be invoked by pressing the * key. The circuit
will revert to LD by pressing the
R
(or
R2
) key or by next on-hook.
When MF mode is selected by the mode pin, the circuit can not be changed temporarily
to LD but will remain in MF.
Last Number Redial
LNR is a facility that allows resignalling of the last manually dialled number without keying
in all the digits again. The LNR is repeatable.
The current contents of the RAM are overwritten by new entries.
A manually entered number is automatically stored in the LNR RAM. The capacity of the
RAM is 31 digits. If a number greater than 31 digits is entered, the LNR facility will be
inhibited (Until new entries < 32 digits) and further entries will be buffered in a First In First
Out Memory (FIFO).
Post dialled digits, i.e. digits manually entered after LNR has been invoked, are not stored
in RAM but buffered in FIFO.
During dialling, one or more pauses can be inserted by pressing the PAUSE KEY. Each
pause is 3 secs (optionally 6 secs) when inserted within the first 5 digits. Otherwise a Wait
Function will halt dialling until the LNR Key is pressed.
Recall Function
A Recall (
R
key or
R2
key) activation will invoke a Flash (Timed Loop Break).
If Recall is the first entry in a digit string, it will be stored in LNR RAM when digit(s) are
entered after the Recall.
If the recall key is depressed after a digit string has been entered or dialled out, the recall
will not be stored but buffered in the FIFO together with subsequently entered digits.
If pressing the recall key is not followed by digit entries, the LNR RAM remains intact.
After a recall, a 3 second pause will automatically be executed.
Mute Function
The MUTE key is enabled in speech mode only. Depressing the MUTE key mutes the
microphone amplifier. Repressing the MUTE key deactivates the mute (toggle function).
Any key entry overwrites a mute activated by the MUTE key and mute will be deactivated.
When privacy mute is activated a reminder tone is applied to the earpiece every 3
seconds.
相关PDF资料 |
PDF描述 |
|---|---|
| SA2532CP | VERSATILE SINGLE CHIP TELEPHONE |
| SA2532CS | VERSATILE SINGLE CHIP TELEPHONE |
| SA2532KA | SINGLE CHIP TELEPHONE FOR INDIA |
| SA2532KB | SINGLE CHIP TELEPHONE FOR INDIA |
| SA2532UP | VERSATILE SINGLE CHIP TELEPHONE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SA2532CP | 制造商:SAMES 制造商全称:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE |
| SA2532CS | 制造商:SAMES 制造商全称:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE |
| SA2532K | 制造商:SAMES 制造商全称:SAMES 功能描述:SINGLE CHIP TELEPHONE DEMO BOARD |
| SA2532KA | 制造商:SAMES 制造商全称:SAMES 功能描述:SINGLE CHIP TELEPHONE FOR INDIA |
| SA2532KB | 制造商:SAMES 制造商全称:SAMES 功能描述:SINGLE CHIP TELEPHONE FOR INDIA |
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