at75c220 ATMEL Corporation, at75c220 Datasheet - Page 69
at75c220
Manufacturer Part Number
at75c220
Description
Smart Internet Appliance Processor Siap
Manufacturer
ATMEL Corporation
Datasheet
1.AT75C220.pdf
(144 pages)
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PIO Output Disable Register
Register Name:PIO_ODR
Access Type:Write-only
This register is used to disable PIO output drivers. If the pin is driven by the peripheral, there is no effect on the pin, but the
information is stored. The register is programmed as follows:
PIO Output Status Register
Register Name:PIO_OSR
Access Type:Read-only
Reset Value:0
This register shows the PIO pin control (output enable) status which is programmed in PIO_OER and PIO ODR. The
defined value is effective only if the pin is controlled by the PIO. The register reads as follows:
1 = Disables the PIO output on the corresponding pin.
0 = No effect.
1 = The corresponding PIO is output on this line.
0 = The corresponding PIO is input on this line.
P31
P23
P15
P31
P23
P15
31
23
15
P7
31
23
15
P7
7
7
P30
P22
P14
P30
P22
P14
30
22
14
P6
30
22
14
P6
6
6
P29
P21
P13
P29
P21
P13
P5
P5
29
21
13
29
21
13
5
5
P28
P20
P12
P28
P20
P12
P4
P4
28
20
12
28
20
12
4
4
P27
P19
P11
P27
P19
P11
P3
P3
27
19
11
27
19
11
3
3
P26
P18
P10
P26
P18
P10
P2
P2
26
18
10
26
18
10
2
2
P25
P17
P25
P17
P9
P1
P9
P1
25
17
25
17
9
1
9
1
P24
P16
P24
P16
24
16
P8
P0
24
16
P8
P0
8
0
8
0
69
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