2 serial ports (com2, com3, com4) – Acrosser AR-B1790 User Manual
Page 12
AR-B1790 User’s Guide
12
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IDE 2: Second IDE Connector
AR-B1790 also provides IDE interface 44-pin connector to connect with the hard disk device.
43
44
1
2
Pin
Signal
Pin
Signal
1
-RESET
2
GROUND
3
DATA 7
4
DATA 8
5
DATA 6
6
DATA 9
7
DATA 5
8
DATA 10
9
DATA 4
10
DATA 11
11
DATA 3
12
DATA 12
13
DATA 2
14
DATA 13
15
DATA 1
16
DATA 14
17
DATA 0
18
DATA 15
19
GROUND
20
N.C
21
SDDREQ
22
GROUND
23
-SOIOW
24
GROUND
25
-SOIOR
26
GROUND
27
SIORDY
28
GROUND
29
-SDDACK
30
GROUND
31
IRQ15
32
GROUND
33
SDA1
34
SD66/100
35
SDA0
36
SDA2
37
-SDCS1
38
-SDCS3
39
HLEDS
40
GROUND
41
VCC
42
VCC
43
GROUND
44
N.C
3.2 SERIAL PORTS (COM2, COM3, COM4)
1
10 2
9
PIN
Signal
PIN
Signal
1
/DCD
2
/DSR
3
RXD
4
/RTS
5
TXD
6
/CTS
7
/DTR
8
/RI
9
GND
10
COM VOLTAGE