- 您現在的位置：買賣IC網 > PDF目錄368612 > S5T8610X01-Q0R0 (SAMSUNG SEMICONDUCTOR CO. LTD.) DIGITAL CLP MODEM WITH ADPCM CODEC PDF資料下載
參數資料
| 型號： | S5T8610X01-Q0R0 |
| 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： | 數字電調制解調器帶ADPCM編解碼器 |
| 文件頁數： | 13/27頁 |
| 文件大?。?/td> | 252K |
| 代理商： | S5T8610X01-Q0R0 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁
DIGITAL CLP MODEM WITH ADPCM CODEC
S5T8610
13
PRELIMINARY
Encryption/Decryption
S5T8610 provides security by encryption. The encryption is achieved by using the scrambler within the modem.
Before starting an operation, the host must send encryption ID to the S5T8610. The encryption ID uniquely
initializes the scrambler. The encryption ID can be any number with 20 bit length which makes decoding by
others almost impossible (one in million). Although the test and the loop back test modes require the encryption
ID, the ID is not used for those functions.
S5T8610 only accepts data with length of 8 bits. The three MSB specify the command type. For encryption ID,
the three bits are 001. Therefore, the 20 bits are divided into four 8 bit words and sent in sequence from the host.
MSB
Bit 7
0
LSB
Bit 0
Bit 6
0
Bit 5
1
Bit 4
Bit 3
First 5 bits of the encryption ID
Bit 2
Bit 1
Bit 7
0
Bit 6
0
Bit 5
1
Bit 4
Bit 3
Second 5 bits of the encryption ID
Bit 2
Bit 1
Bit 0
Bit 7
0
Bit 6
0
Bit 5
1
Bit 4
Bit 3
Third 5 bits of the encryption ID
Bit 2
Bit 1
Bit 0
Bit 7
0
Bit 6
0
Bit 5
1
Bit 4
Bit 3
Last 5 bits of the encryption ID
Bit 2
Bit 1
Bit 0
ADPCM
S5T8610 compresses voice signals by ADPCM with data rate of 24kbps or 16kbps. The default ADPCM rate is
24kbps. The 24kbps ADPCM has better sound quality than 16kbps ADPCM. However, S5T8610 does not provide
error detection and concealment for 24kbps because of the high data rate.
When the Received Signal Strength Indicator (RSSI) of RF module goes to high, the host can switch the ADPCM
data rate to 16kbps by sending the ADCPM control command. S5T8610 offers error detection and error
concealment for 16kbps ADPCM. This function provides longer communication range with security guaranteed.
By setting the BER_mute bit to 1, the modem is automatically set mute when the bit error rate is too high.
When the RSSI produces low signal or the BER pin shows indicates low bit error rate, the host can switch back
the ADPCM data rate to 24kbps to offer better sound quality.
相關PDF資料 |
PDF描述 |
|---|---|
| S5T8808A | PLL FREQUENCY SHNTHESIZER FOR PAGER |
| S5T8808A01-R0B0 | PLL FREQUENCY SHNTHESIZER FOR PAGER |
| S6A0031 | 8 COM / 80 SEG DRIVER & CONTROLLER FOR STN LCD |
| S6A0032 | 16 COM / 80 SEG DRIVER & CONTROLLER FOR STN LCD |
| S6A0035 | 53 SEGMENT STATIC DRIVER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| S5T8701 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FLEX ROAMING DECODER II |
| S5T8701X01-E0R0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FLEX ROAMING DECODER II |
| S5T8702 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FEEX ALPHANUMERIC DECODER II |
| S5T8702X01-E0R0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FEEX ALPHANUMERIC DECODER II |
| S5T8803A | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:10 CH PLL |
發(fā)布緊急采購，3分鐘左右您將得到回復。