参数资料
型号: M66291GP
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP48
封装: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件页数: 103/128页
文件大小: 928K
代理商: M66291GP
M66291GP/HP
Rev 1.01 2004.11.01 page 74 of 122
2.37 Port Data Register
Port Data Register (PORT_DATA)
<Address : H'5C>
b15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
b0
PDAT
0
-
--
-
<H/W reset : H'0000>
<S/W reset : ->
<USB bus reset : ->
b
Bit name
Function
R
W
15~7
Reserved. Set it to “0”.
00
6~0
PDAT
Port Data
0 :
”L” level
1 :
”H” level
The port number corresponds to the bit number.
b0 : P0 pin
b1 : P1 pin
b2 : P2 pin
b3 : P3 pin
b4 : P4 pin
b5 : P5 pin
b6 : P6 pin
The port pins, P0 ~ P6, automatically turn to input/output ports by setting to 8-bit bus interface mode
(controlled by HWR/BYTE pin). When set to 16-bit bus interface mode, all functions of this register become
invalid. Further, the writing into this register at 16-bit bus interface mode becomes invalid while the reading
becomes H’0000.
(1) PDAT (Port Data) Bits (b6~b0)
These bits indicate the port pin state.
When the PIEN bit of the Port Control Register is set to “0”, this bit reads out “0”.
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