Digi NS9750 User Manual
Page 59
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N S 9 7 5 0 P i n o u t
AE17
gpio[4]
1
U
2
I/O
00
Ser port B DTR
01
1284 busy (peripheral-driven)
02
DMA ch 1 done
03
GPIO 4
AF17
gpio[5]
U
2
I/O
00
Ser port B DSR
01
1284 PError (peripheral-driven)
02
DMA ch 1 read enable
03
GPIO 5
AD16
gpio[6]
U
2
I/O
00
Ser port B RI / SPI port B clk
01
1284 nFault (peripheral-driven)
3
02
Timer 7 (duplicate)
03
GPIO 6
AE16
gpio[7]
U
2
I/O
00
Ser port B DCD / SPI port B enable
01
DMA ch 1 read enable (duplicate)
02
Ext IRQ 1
03
GPIO 7
AD15
gpio[8]
1
U
2
I/O
00
Ser port A TxData / SPI port A dout
01
Reserved
02
Reserved
03
GPIO 8
AE15
gpio[9]
U
2
I/O
00
Ser port A RxData / SPI port A din
01
Reserved
02
Timer 8 (duplicate)
03
GPIO 9
AF15
gpio[10]
1
U
2
I/O
00
Ser port A RTS
01
Reserved
02
Reserved
03
GPIO 10
AD14
gpio[11]
U
2
I/O
00
Ser port A CTS
01
Ext IRQ2 (duplicate)
02
Timer 0 (duplicate)
03
GPIO 11
Pin #
Signal
name
U/D
OD
(mA)
I/O
Description (4 options: 00, 01, 02, 03)
Table 10: GPIO MUX pinout