rtd DM35218HR, Руководство пользователя

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49 DM35418HR/DM35218HR
User’s Manual
BDM-610010041 Rev F
6.6 BAR2: Digital I/O (DIO)
This function block is for 32 bi-directional digital I/O. There are not any interrupts or DMA.
6.6.1 F
UNCTION
B
LOCK
R
EGISTER
M
AP
Table 25: Digital I/O Functional Block
Offset 0x03 0x02 0x01 0x00
H
ea
de
r
FB + 0x00 FB_ID
FB + 0x04 FB_DMA_BUFFERS FB_DMA_CHANNELS Reserved Reserved
DIO
C
on
tro
l
FB + 0x08 DIO_INPUT_VAL
FB + 0x0C DIO_OUTPUT_VAL
FB + 0x10 DIO_DIRECTION
6.6.2 DIO_INPUT_VAL (R
EAD
O
NLY
)
This register provides the current value on the Digital I/O lines. The bits in the register correspond with the Digital I/O pins as follows:
Bit CN3 Pin Number Signal Name
31 34 DIO0.31
30 33 DIO0.30
29 32 DIO0.29
28 31 DIO0.28
27 30 DIO0.27
26 29 DIO0.26
25 28 DIO0.25
24 27 DIO0.24
23 26 DIO0.23
22 25 DIO0.22
21 24 DIO0.21
20 23 DIO0.20
19 22 DIO0.19
18 21 DIO0.18
17 20 DIO0.17
16 19 DIO0.16
Bit CN3 Pin Number Signal Name
15 16 DIO0.15
14 15 DIO0.14
13 14 DIO0.13
12 13 DIO0.12
11 12 DIO0.11
10 11 DIO0.10
9 10 DIO0.9
8 9 DIO0.8
7 8 DIO0.7
6 7 DIO0.6
5 6 DIO0.5
4 5 DIO0.4
3 4 DIO0.3
2 3 DIO0.2
1 2 DIO0.1
0 1 DIO0.0
6.6.3 DIO_OUTPUT_VAL (R
EAD
/W
RITE
)
The value to be output if the pins are configured as output. Bit assignments are the same as above.
6.6.4 DIO_DIRECTION (R
EAD
/W
RITE
)
Selects the direction of the I/O bit. 0=input, 1=output. Bit assignments are the same as above.
All pins default to inputs at power-up.