ASC Bridge Board
Evaluation Board User Guide
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FPGA-EB-02025-2.0
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Table C.4. Miscellaneous – MachXO3-9400 Development Board and ASC Bridge Board Connections
Bridge Board Signal Name
J2 Pin
X3 Pin
J3 Pin
X2 Pin
MachXO3 Board
Signal Name
MachXO3 Ball
Project Designer
Signal Name
I2C_SDA
16
—
EXPCON_IO13
B12
SCL
I2C_SCL
18
—
EXPCON_IO15
A12
SDA
I2C_WRITE_EN
1
32
—
EXPCON_IO23
D11
—
PB1 (SW1)
15
—
EXPCON_IO12
C6
User Defined
PB2 (SW2)
21
—
EXPCON_IO16
D8
User Defined
MANDATORY_RESET
28
—
EXPCON_IO20
C9
User Defined
FAN1_PWM
—
15
EXPCON_IO40
E16
User Defined
FAN1_TACH
—
20
EXPCON_IO45
G12
User Defined
FAN2_PWM
—
17
EXPCON_IO42
F13
User Defined
FAN2_TACH
—
18
EXPCON_IO43
F15
User Defined
FAN3_PWM
—
19
EXPCON_IO44
G15
User Defined
FAN3_TACH
—
16
EXPCON_IO41
E13
User Defined
EXPCON_OSC
—
29
EXPCON_OSC
2
—
—
EXPCON_CLKIN
—
31
EXPCON_CLKIN
A10
—
EXPCON_CLKOUT
—
33
EXPCON_CLKOUT
A21
—
HPE_RESOUT#
1
—
HPE_RESOUT#
G9
—
EXPCON_IO0
3
—
EXPCON_IO0
F8
User Defined
EXPCON_IO2
5
—
EXPCON_IO2
F9
User Defined
EXPCON_IO14
17
—
EXPCON_IO14
D7
User Defined
EXPCON_IO17
23
—
EXPCON_IO17
C8
User Defined
CARDSEL#
38
—
CARDSEL#
C13
User Defined
Notes:
If I2C_WRITE_EN is not used, remove R4 on the ASC Breakout Boards to isolate their GPIO1 (LED1) signals; the I2C_WRITE_EN
signal is bussed to all three ASC connectors on the ASC Bridge board.
J10 or Y2 Oscillator.