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參數(shù)資料
| 型號(hào)： | KS16121 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | DSP for Digital Answering Phone(用于數(shù)字應(yīng)答電話的DSP) |
| 中文描述： | DSP的數(shù)字應(yīng)答電話（用于數(shù)字應(yīng)答電話的數(shù)字信號(hào)處理器） |
| 文件頁數(shù)： | 25/30頁 |
| 文件大?。?/td> | 147K |
| 代理商： | KS16121 |
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Preliminary
DSP for Digital Answering phone with FLASH interface
KS16121
See TONE DETECTION mode for a description of the DTMF and call progress tone detection result. The
recording status is reported with the status bits, MF and VD, which indicate the memory full and voice
detected conditions, respectively.
The KS16121 continues the recording while it reads and responds to these commands. If needed, the host
can use these instructions repeatedly without interrupting a recording operation. When the memory becomes
full , the KS16121 remains in the RECORD mode even though the message is not stored any more.
The host may terminate a recording with an idle instruction. The message is saved in the memory before
the KS16121 returns to the IDLE mode. Alternatively, the host may issue an R1c instruction to terminate
recording and remove the tail portion of the recorded message. The 7-bit parameter, TAIL CUT, specifies
the length of tail to be removed in the unit of 80 msec.
PLAYBACK
The KS16121 enters the PLAYBACK mode with the P0 instruction, which also specifies the playback speed
( PBS ) and the index of message to be played-back ( MESSAGE ID ). The playback speed ranges from 0.5
( two times slower ) to 2 ( two times faster ) in the step of 0.25.
The actual playback starts after the P1 instruction is received. The OFFSET bits of the instruction specifies
the length of the message, from the beginning, to be skipped in the unit of seconds.
While the KS16121 plays a message, the host may issue one of the following instructions:
P2a
-- Monitor the DTMF, call progress tone detection result ( DTMF, CPT ) and recording status ( EM ).
P2b
-- Read the current position in the message from the beginning ( OFFSET ).
The playback continues with these instructions if the PA bit set to 0.
The host can pause the playback these instruction with PA = 1, in which case the KS16121 stops the
playback operation and resumes it when a new instruction ( P2a , P2b ) is entered with PA = 0.
The KS16121 stays in the PLAYBACK mode and continues to respond to the P2a and P2b instructions
even when it is in PAUSE ( PA = 1 ) or the end of message is reached ( EM = 1 ). It returns to the IDLE
mode with an idle instruction.
VOICE PROMPT
The host issues a voice prompt instruction ( V0 ) to play a phrase that is pre-stored in ROM / EPROM or Flash.
The instruction specifies the phrase number and the desired playback speed.
R1a
-- Monitoring the recording status ( MF,VD ) , the DTMF
and call progress tone detection result ( DTMF, CPT ).
R1b
-- Generate a tone, in addition to the tasks performed with R1a. See the TONE GENERATION mode
for definition of the input parameters. The tone generation stops with another R1b instruction with
TONE ID = 0.
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