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M66591GP Datasheet(PDF) 21 Page - Renesas Technology Corp

Part # M66591GP
Description  ASSP (USB2.0 Peripheral Controller)
PDF  135 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M66591GP Datasheet(HTML) 21 Page - Renesas Technology Corp

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M66591GP
Rev .1.00 Nov . 30, 2004 page 19 of 131
2.7 Data Pin & FIFO/DMA Control Pin Configuration Register 0
Data Pin & FIFO/DMA Control Pin Configuration Register 0 (PinCtrlCfg0)
<Address: H’08>
b15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
b0
PA [7:0]
0
0
0
0
0
0
0
0
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<H/W reset: H’00??>
<S/W reset: ->
<USB bus reset: ->
b
Bit name
Function
R
W
15~8
Reserved. Set it to “0”.
“0”
“0”
7~0
PA [7:0]
General port A
0:
Low level
1:
High level
The port number corresponds to the bit number.
b0: PA0 pin
b1: PA1 pin
b2: PA2 pin
b3: PA3 pin
b4: PA4 pin
b5: PA5 pin
b6: PA6 pin
b7: PA7 pin
(1) PA [7:0] (General Port A) Bits (b7-b0)
When the DB_Cfg bit of the Data Pin & FIFO/DMA Control Pin Configuration Register 1 is set to “0” (GPIO), the
SD7-SD0 pins are assigned to general purpose port PA [7:0].
Since general purpose port has a separate buffer for input and output, when the port is set to input, the read data is
always the state of input pins even if any data is written to these bits.
The output buffer of general purpose port is undefined after H/W reset. It is necessary to write initial value before
change direction to output, when using as output port. And, the value is undefined when reading from output port.



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