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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)： | 20/30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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27 -
6.3 Parallel Interface Mode
MN195997 is implemented 16550A common register with is used as PC standard serial
interface. Parallel Interface mode is bus connection interface by using these registers.
The reference serial interface block diagram is shown in [ Figure 9 ].
The local bus of Host CPU is connected common asynchronous receiver/transmitter 16550A
which is converted from parallel data to serial data, and connected to EIA232E
Driver/receiver. MN195997 is connected via EIA232E Driver/Receiver and communicates to
Host CPU with Serial communication. The interface point of MN195007 Serial mode is shown
in [ Figure 9 ] a).
For the connection of Parallel interface, interface point with Host CPU is shown in [ Figure 9 ]
b) and connection diagram is shown in [ Figure 10 ]. Host CPU can be access directly to
MN195007 16550 compatible register, so efficient AT command modem can be created
without any speed limitation like as the serial interface.
* Not supported for voice processing function
Interface Point for Parallel Mode
Host
CPU
A[2:0]
D[7:0]
CS
WR
RD
iRQ
TXRDY
RXRDY
MN195007
Parallel Mode
Host CPU
Local Bus
AFE
Line
[ Figure 10 ] Parallel Interface Block Diagram
Host
CPU
A[2:0]
D[7:0]
CS
WR
RD
iRQ
TXRDY
RXRDY
16550A
DCD
RXD
TXD
DTR
DSR
RTS
CTS
RI
EIA232E
Driver/Receiver
Host CPU
Local Bus
DCD
RXD
TXD
DTR
DSR
RTS
CTS
CI
MN195007
a) Interface Point for Serial Mode
+12V
RS232C i/f
b) Interface Point for Parallel Mode
[ Figure 9 ] Serial Interface Block Diagram
EIA232E
Driver/Receiver
AFE
Line
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