Digi NS9750 User Manual
Page 60
P i n o u t a n d s i g n a l d e s c r i p t i o n s
3 6
N S 9 7 5 0 H a r d w a r e R e f e r e n c e
AE14
gpio[12]
1
U
2
I/O
00
Ser port A DTR
01
Reserved
02
Reserved
03
GPIO 12
AF14
gpio[13]
U
2
I/O
00
Ser port A DSR
01
Ext IRQ 0 (duplicate)
02
Timer 10 (duplicate)
03
GPIO 13
AF13
gpio[14]
U
2
I/O
00
Ser port A RI / SPI port A clk
01
Timer 1
02
Reserved
03
GPIO 14
AE13
gpio[15]
U
2
I/O
00
Ser port A DCD / SPI port A enable
01
Timer 2
02
Reserved
03
GPIO 15
AD13
gpio[16]
2
U
2
I/O
00
Reserved
01
1284 nFault (peripheral-driven, duplicate)
3
02
Timer 11 (duplicate)
03
GPIO 16
AF12
gpio[17]
1,2
U
2
I/O
00
USB power relay
01
Reserved
02
Reserved
03
GPIO 17
AE12
gpio[18]
U
4
I/O
00
Ethernet CAM reject
01
LCD power enable
02
Ext IRQ 3 (duplicate)
03
GPIO 18
AD12
gpio[19]
1
U
4
I/O
00
Ethernet CAM req
01
LCD line-horz sync
02
DMA ch 2 read enable (duplicate)
03
GPIO 19
Pin #
Signal
name
U/D
OD
(mA)
I/O
Description (4 options: 00, 01, 02, 03)
Table 10: GPIO MUX pinout