MachXO3-9400 Development Board
Evaluation Board User Guide
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FPGA-EB-02004-1.0
33
8.5.
ASC LEDs
As shown in
Figure 8.6
, there are nine red LEDs to support ASC applications. They are connected to the ASC GPIOs as
listed in
Table 8.5
. The LEDs illuminate when the GPIO is driven low.
Figure 8.6. ASC LEDs
Table 8.5. GPIO LED Connections
Signal Name
ASC Pin Number
LED
Breakout Test Point
Logic Level to Light
ASC_LED1
44
D9
TP44
0
ASC_LED2
45
D10
TP45
0
ASC_LED3
46
D11
TP46
0
ASC_LED4
47
D12
TP47
0
ASC_LED5
48
D13
TP48
0
ASC_LED6
1
D14
TP49
0
ASC_LED8
11
D15
TP50
0
ASC_LED9
12
D16
TP51
0
ASC_LED10
13
D17
TP52
0
Caution:
The MachXO3-9400 Development Board contains ESD-sensitive components. ESD safe
practices should be followed while handling and using the development board.
Note:
The LEDs are lined up in sequence, as shown in
Figure 8.6
.
8.6.
ASC HVOUT and Trim Pins
The ASC has four high-voltage charge-pump outputs (HVOUTs) and four Trim-DAC outputs (TRIMs) which are brought
out to test pins for user convenience as listed in
Table 8.6
. The HVOUTs are designed to drive the gates of MOSFETs to
enable circuits and loads. The TRIMs are designed to drive the trim inputs of DC-DC converters to adjust the output
voltage.
Table 8.6. ASC HVOUT and Trim Connections
Signal Name
ASC Pin Number
Breakout Test Point
ASC_HVOUT1
2
TP40
ASC_HVOUT2
3
TP41
ASC_HVOUT3
9
TP42
ASC_HVOUT4
10
TP43
ASC_TRIM1
39
TP36
ASC_TRIM2
40
TP37
ASC_TRIM3
41
TP38
ASC_TRIM4
42
TP39
