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參數(shù)資料
| 型號： | S5T8610 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 元件分類： | Codec |
| 英文描述： | DIGITAL CLP MODEM WITH ADPCM CODEC |
| 中文描述： | 數(shù)字電調(diào)制解調(diào)器帶ADPCM編解碼器 |
| 文件頁數(shù)： | 11/27頁 |
| 文件大?。?/td> | 252K |
| 代理商： | S5T8610 |
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DIGITAL CLP MODEM WITH ADPCM CODEC
S5T8610
11
PRELIMINARY
FUNCTIONAL DESCRIPTION
The main feature of S5T8610 is the digital communication between the hand set and the base set. The device
accepts analog voice signal through the TXI pin. The analog signal is converted into digital signal by the internal
voice codec. The digital voice signal is then compressed by ADPCM into either 24kbps or 16kbps. The
compressed signal is then digitally modulated by 8 DPSK algorithm. The modulated signal is converted into
analog signal by internal modem DAC and finally output to the FM transmitter, through the TXO pin.
TXI
Modem DAC
Fs = 48 kHz
8 Phase DPSK
Modulator
ADPCM
Encoder
Voice ADC
Fs = 8kHz
TXO
At the receiving side, S5T8610 accepts the modem signal from the FM receiver, through the RXI pin, and
converts it into digital by internal modem ADC. The received signal is demodulated and decompressed into
digital voice signal. The digital voice signal is finally converted into analog by the internal voice codec, output,
through the RXO pin, to the external amplifier, and then to the speaker.
RXI
Voice DAC
Fs = 8 kHz
ADPCM
Decoder
8 Phase DPSK
Demodulator
Modem ADC
Fs = 48kHz
RXO
Initially S5T8610 is in the idle state after being reset by either the power-on-reset or external hardware reset. As
default, the S5T8610 is set to base set. For the base set, S5T8610 waits for the four bytes of the encryption ID.
For the hand set, S5T8610 must first receive the modem control command specifying the system is a hand set.
After receiving the modem control command, S5T8610 must receive four consecutive bytes of encryption ID for
encryption. S5T8610 can accept the first command from the host 72
μ
sec after a reset. After the first command,
the time between two consecutive commands must be at least 20
μ
sec.
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