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參數(shù)資料
| 型號： | PS2000ACQ |
| 英文描述： | A Network Communication Controller Designed to Connect Any MCU Application System To A Gateway(單片網(wǎng)絡通信控制器,用于控制MCU和網(wǎng)絡服務器之間的信息交換) |
| 中文描述： | 通信控制器的網(wǎng)絡連接任何設計單片機應用系統(tǒng)到一個網(wǎng)關（單片網(wǎng)絡通信控制器，用于控制微控制器和網(wǎng)絡服務器之間的信息交換） |
| 文件頁數(shù)： | 22/54頁 |
| 文件大小： | 594K |
| 代理商： | PS2000ACQ |
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PS2000A Datasheet
Doc. Number:
TECINHD001
Version 1.0
3/1/2002
P&S DataCom Corporation
18
The command functions are shown in Table 14.
Table 14
Mnemonic
designation
Code
D4~D0
Function
W_INIT
0Eh
Initial connection command from
the
PS2000A to
the
MCU
W_CNTL
0Fh
the
PS2000A requests
the
MCU into initialization. The main parameters are
used to configure the related registers in the PS2000A
W_READ
00h
the
PS2000A reads the object data information in the MCU
W_RDEV
06h
the
PS2000A queries the events in the MCU
W_WRIT
01h
the
PS2000A writes data into the objects in the MCU application system
9.3
Physical Connection between PS2000A and MCU
The PS2000A can select the communication mode via pin S/I. The PS2000A supports
SPI or I
2
C mode to communicate with MCU, as described below:
S/I =1
select SPI communication mode;
S/I =0
select I
2
C communication mode.
9.3.1
Connecting PS2000A and MCU in SPI Mode
When pin S/I is connected to Vcc, the PS2000A is in SPI mode as shown in Figure 11.
N
OTE
:
W
HEN PIN
S/I
IS CONNECTED TO
V
CC OR IT IS LEFT FLOATING
,
THE
PS2000A
IS IN
SPI
MODE
.
Figure 11 The Physical Connection between PS2000A and MCU (SPI mode)
When using the SPI interface mode between the MCU and the PS2000A, the PS2000A
acts as a peripheral device of the MCU. The MCU operates in master transmission and
receiving state and the PS2000A is in slave state.
PS2000A signals transfer is recognized via 3 lines, they are:
CLK:
Clock signal line, it’s from the MCU to the PS2000A;
DI:
Data signal input line, it’s from the MCU to the PS2000A;
V
CC
PS2000A
/INT
/CS
CLK
DI
MCU
/INT
/CS
CLK
DI
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