參數(shù)資料
型號: MSM7584C
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: π/4 Shift QPSK MODEM(π/4移動QPSK調(diào)制解調(diào)器/ADPCM編碼譯碼器)
中文描述: π/ 4移位的QPSK調(diào)制解調(diào)器(π/ 4移動的QPSK調(diào)制解調(diào)器/差分PcM編碼譯碼器)
文件頁數(shù): 11/57頁
文件大?。?/td> 321K
代理商: MSM7584C
Semiconductor
MSM7584C
11/57
(Modem)
TXD
384 kbps transmit data input.
TXCI
Transmit clock input.
When the control register CR14 - B6 is "0", a 384 kHz clock pulse synchronous with TXD should
be input to this pin. This clock pulse should be continuous because this device use APLL to
generate an internal clock pulse.
When CR14 - B6 is "1", a 3.84 MHz clock pulse should be input to this pin. When the 3.84 MHz
clock pulse is applied, a 384 kHz clock pulse, which is generated by dividing the TXCI by 10, is
output to the TXCO pin. The transmit data, synchronous to the 384 kHz clock pulse, should be
input to the TXD. In this case the devices do not use APLL, and the 3.84 MHz clock pulse need
not be continuous. (Refer to Fig. 3)
TXCO
Transmit clock output.
When CR14 - B6 is "0", TXCO outputs the 384 kHz clock pulse (APLL output) for monitoring
purposes. When CR14 - B6 is "1", this pin outputs a 384 kHz clock pulse generated by dividing
the TXCI input by 10. (Refer to Fig. 3)
TXW
Transmit data window signal input.
The transmit timing signal for the burst data is input to this pin. If TXW is "1", the modulation
data is output. (Refer to Fig. 3)
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