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| 型号： | MSM6636GS-VK |
| 厂商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 1 CHANNEL(S), 41.6K bps, LOCAL AREA NETWORK CONTROLLER, PDSO24 |
| 封装： | 0.430 INCH, 1.27 PITCH, PLASTIC, SOP-24 |
| 文件页数： | 21/70页 |
| 文件大小： | 1115K |
| 代理商： | MSM6636GS-VK |
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MSM6636/6636B User’s Manual
CPU Interfaces
4 – 1
4. CPU INTERFACES
4.1 MSM6636
Access to each internal register can be selected from 4 types of serial interfaces. Data length is fixed to 8 bits
(LSB first). Clock synchronous or UART can be selected and each has 2 types of modes: normal mode, to decide
whether it is address value receive or data value receive according to the A-D pin status, and MPC mode, to
decide address/data by MPC bit following 8 bit data. When UART mode is selected, even parity addition yes/no
can be selected by the SCLK/PAE pin.
Type selection is set by the U-C pin and the M-N pin, and is determined by the sampling result of the status of
both pins immediately after clearing RESET.
If a communication type change is required, be certain to perform RESET processing.
1
Clock synchronous serial:
Normal mode
: 8-bit data
MPC mode
: 8-bit data + MPC bit
(1: address / 0: data select bit)
2
UART (start-stop synchronization system)
Normal mode
: 1 start bit + 8-bit data + (parity) + 1 stop bit
MPC mode
: 1 start bit + 8-bit data + MPC bit + (parity) + 1 stop bit
Selection of CPU interface type
UART
Clock Synchronous Serial
Type
Pin Process
MPC Mode
Normal Mode
MPC Mode
Normal Mode
U-C Pin
L
H
M-N Pin
L
H
L
H
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