參數(shù)資料
型號(hào)： MSM7584C
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： π/4 Shift QPSK MODEM(π/4移動(dòng)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(dòng)的QPSK調(diào)制解調(diào)器/差分PcM編碼譯碼器）
文件頁(yè)數(shù)： 35/57頁(yè)
文件大?。?/td> 321K
代理商： MSM7584C
Semiconductor
MSM7584C
35/57
FUNCTIONAL DESCRIPTION
Control Register Description Table
(ADPCM CODEC)
(1) CR0 (Basic Operation Mode Settings)
B7
A/
m
SEL
0
B6
B5
PDN
ALL
0
B4
PDN
TX
0
B3
PDN
RX
0
B2
B1
B0
—
SA, VF
_ OUT
0
SAO/VFRO
SA, VF
_ PDN
0
0
0
CR0
Initial Value (*)
*
The initial value means a value which is set when the device is reset using the RESET signal.
B7:..............PCM interface companding selection
B6:..............Not used
B5:..............Power down (entire unit)
ORed with the inverting external power down signal PDN3. When using
this data, set PDN3 to "1".
B4:..............Power down (transmit side only)
B3:..............Power down (receive side only)
B2:..............Output from VFRO and SAO at a time
0: Receive side output signals are output from a pin selected by B1.
1: Receive side output signals are output from VFRO and SAO at a time.
B1:..............Receive side output switch control
0: Receive side output signals appear on the SAO (Sounder Amplifier
Output) pin.
1: These signals appear on the VFRO (Receiver Amplifier Output) pin.
B0:..............Power down control for sounder output amplifier (SAO) and receiver
output amplifier (VFRO).
0: When SAO is selected by CR0 - B1, VFRO is powered down.
When VFRO is selected, SAO is powered down.
1: Both SAO and VFRO are powered ON.
0:
m
-law
1: A-law
0: Power ON
1: Power down
0: Power ON
0: Power ON
1: Power down
1: Power down
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