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參數(shù)資料
| 型號： | MN195007 |
| 廠商： | PANASONIC CORP |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | 16-BIT, 24.576 MHz, OTHER DSP, PQFP100 |
| 封裝： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100 |
| 文件頁數(shù)： | 14/30頁 |
| 文件大?。?/td> | 280K |
| 代理商： | MN195007 |
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MN195007 Hardware Specifications
Panasonic Communications Co., Ltd.
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21 -
5. Serial Interface Section
Serial communication has been performed to Host CPU when DSP mode or Serial Mode has
been selected.
On DSP mode, 4 signal lines ( SRXD, STXD, SCTS and SRTS ) assigned for serial communication
pins can be used to perform standard serial communication. Normally 9 signal lines is assigned
for modem control, but proper FAX/DATA modem operation can be performed by using these 4
signal lines.
On Serial mode, in addition to above 4 signal lines, other signal lines ( CI, DTR DRS, and DCD )
assigned for common communication pins can be used to perform EIA-232-E asynchronous
communication.
*More details explanations for Serial Mode, please refer “6.2 Serial Interface Mode”.
Main features for this “Serial Interface” are :
a) Support automatic configuration such as Automatic Speed Recognition, Automatic
Format Recognition.
b) Support 2400bps ~ 460.8Kbps. ( 2400, 4800, 7200, 9600, 14.4K, 19.2K, 38.4K, 57.6K,
76.8K, 115.2K, 230.4K, 460.8K )
c) Implement 32K bytes FIFO for Transmitting/Receiving Data, so that automatic flow
operation can be performed by FIFO condition.
d) Support EIA-232-E driver/receiver, so that PC’s serial port can be connected.
The Serial communication of DSP Mode is shown following paragraphs
5.1 Type 3 Serial Operation
“Type3 Serial Operation” is performed Serial communication with DSP mode.
To use this “Type3 Serial Operation”, set the mode selection pins to “DSP mode” and
perform the “Type3 Serial Boot Command” from Host CPU, so that serial communication
is performed even in DSP mode.
“Type3 Serial Operation” can be performed to switch “Type 3 command controlled FAX
modem” and “AT command controlled DATA modem” without changing the hardware
design.
Refer [ Figure 3 ] for Block Diagram and [ Figure 4 ] for Operation Image
[ Figure 3 ] “Type3 Serial Operation” Connection Block Diagram in DSP Mode
Host
CPU
AFE
MN
195007
SRXD
STXD
SCTS
SRTS
Line
TYPE3 i/f
Serial i/f
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