Manual

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
12
43
44