2 serial ports(com1~4) – Acrosser AR-B1841 User Manual
Page 15
AR-B1841 User’s Guide
AR-B1841
15
IDE 2 : Secondary IDE Connector (44 Pins)
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
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 N/C
22 GROUND
23 IOW#
24 GROUND
25 IOR#
26 GROUND
27
N/C
28
BALE - DEFAULT
29
N/C
30
GROUND - DEFAULT
31 INTERRUPT
32 IOCS16#-DEFAULT
33 SA1
34 N/C
35 SA0
36 SA2
37
HDC CS0#
38
HDC CS1#
39 HDD
ACTIVE#
40 GROUND
41
+5V LOGIC
42
+5V MOTOR
43 GROUND
44 TYPE
3.2 Serial Ports(COM1~4)
The AR-B1841 offers two high speeds NS16C550 compatible UARTs
with Read/Receive 16 byte FIFO serial ports.
• COM1/2/3 : RS-232 Serial port (Pin Header)
PIN DESCRIPTION PIN DESCRIPTION
1
NDCD
2
NDSR
3 NSIN 4 NRTS
5
NRIB
6
NCTS
7 NSOUT 8 NRI
9 GND 10
NC
1
2
43
44