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| 型号： | MSM6636GS-K |
| 厂商： | LAPIS SEMICONDUCTOR 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 MM PITCH, PLASTIC, SOP-24 |
| 文件页数： | 24/73页 |
| 文件大小： | 646K |
| 代理商： | MSM6636GS-K |
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MSM6636/6636B User’s Manual
CPU Interfaces
4 – 2
4.1.1 Clock Synchronous Serial Interface
Normal Mode
[PIN CONNECTION]
CPU
MSM6636
SCLK
SCLK/PAE
Pxx
A-D
SOUT
RXD
SIN
TXD
U-C
INT
M-N
V
DD
V
DD
A-D pin input selects whether serial bus data is address or data information.
(For control purposes, connect CPU general purpose port (Pxx) output to A-D pin.)
Supply serial clock for both transmit and receive to CPU.
(CPU: master / MSM6636: slave communication)
[WRITE PROCEDURE]
Send the address of the write target register and communication type first, then send the write data. Since
address values are automatically incremented, it may be quicker to write to the registers that have consecutive
addresses.
1.
Set “1” to the A-D pin to send the write destination address and the communication type.
2.
Synchronize 8 bits of the register write code, M1, M0 = “0, 1”, and the write destination address values
“A5 to A0”, to SCLK with LSB first, then send it to RXD input.
3.
The data input to RXD is sampled at the rising edge of SCLK.
4.
Set “0” to the A-D pin to send write data.
5.
Synchronize 8 bits of write data to the SCLK clock with LSB first, then send it to RXD input.
6.
Auto increment of the write destination address values occurs after each data write. (This makes
continuous data writing quicker, by eliminating some address selections.)
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