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: 101/128页
文件大小: 928K
代理商: M66291GP
M66291GP/HP
Rev 1.01 2004.11.01 page 72 of 122
2.36 Port Control Register
Port Control Register (PORT_CNTL)
<Address : H'5A>
b15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
b0
PIEN
PDIR
00
0
--
-
--
-
--
<H/W reset : H'0000>
<S/W reset : ->
<USB bus reset : ->
b
Bit name
Function
R
W
15
Reserved. Set it to “0”.
00
14~8
PIEN
Port Input Enable
0 :
Disable Port Input
1 :
Enable Port Input
The port number corresponds to the bit number.
b8 :P0 pin
b9 :P1 pin
b10 :P2 pin
b11 :P3 pin
b12 :P4 pin
b13 :P5 pin
b14 :P6 pin
7
Reserved. Set it to “0”.
00
6~0
PDIR
Port Direction
0 :
Input Port
1 :
Output Port
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.
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