
USB-231-OEM User's Guide
Specifications
25
Single-ended mode pinout
Do not connect to connector pins labeled
NC
.
Table 17. J2 single-ended pinout
Pin Signal name Pin description
Pin
Signal name
Pin description
1
AOUT0
Analog output 0
2
AOUT1
Analog output 1
3
AGND
Analog ground
4
AGND
Analog ground
5
CH3H
Analog input 3
6
CH3L
Analog input 7
7
CH2H
Analog input 2
8
CH2L
Analog input 6
9
CH1H
Analog input 1
10
CH1L
Analog input 5
11
CH0H
Analog input 0
12
CH0L
Analog input 4
13
AGND
Analog ground
14
AGND
Analog ground
15
D–
USB differential data signals
16
VBUS
USB power
17
D+
USB differential data signals
18
LED
Status LED driver
19
GND
Digital ground
20
DIO0
DIO bit 0
21
DIO1
DIO bit 1
22
DIO2
DIO bit 2
23
DIO3
DIO bit 3
24
DIO4
DIO bit 4
25
DIO5
DIO bit 5
26
DIO6
DIO bit 6
27
DIO7
DIO bit 7
28
NC
No connection
29
TRIG
Digital trigger input
30
NC
No connection
31
NC
No connection
32
GND
Digital ground
33
CTR
Counter input
34
+VO
User voltage output