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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)： | 17/57頁 |
| 文件大?。?/td> | 321K |
| 代理商： | MSM7584C |
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Semiconductor
MSM7584C
17/57
(Common)
RESET
Device reset input.
The control registers CR0 to CR22 all are reset to the initial values by setting this pin to "0" level.
R0, R1
Output ports for the control register CR21.
The data written in CR21 - B0 and B1 are output on the R0 and R1 pins.
These pins become high impedance when the device is reset.
DEN, EXCK, DIN DOUT
Serial control ports for the microcontroller interface.
The device has 23 bytes of control registers. Data is written and read by the external CPU using
these ports. DEN is an enable signal input, EXCK is a data shift clock signal input, DIN is an
address/data input, and DOUT is a data output.
The input/output timing is shown in Fig. 6.
Figure 6 MCU Interface I/O Timing
The control register map is shown in Table 2.
As shown in Fig. 6, data should be written or read in continuous pulses of the EXCK signal or in
16 bits.
IO1 to IO7
Input/output for internal analog switches.
See the control register map (CR22) and circuit configuration for connection information and
control method.
TOUT1, TOUT2, TOUT3
Sign bit outputs for the tone generator.
The outputs are controlled by the control register CR22. See the control register map and circuit
configuration for connection information and control method.
High Impedance
(a) Write Data Timing
(b) Read Data Timing
DEN
W
EXCK
DIN
A2
A1
A0
B7
B6
B5
B4
B3
B2
B1
B0
R
A2
A1
A0
B7
B6
B5
B4
B3
B2
B1
B0
DEN
EXCK
DIN
DOUT
A3
A4
A3
A4
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