Cypress EX-USB FX3, Programmer'S Manual

Page: 129 / 192

FX3 Programmers Manual, Doc. # 001-64707 Rev. *C 129
FX3 Serial Peripheral Register Access
11:8 MODE RW RW 0
Mode/command. Behavior is undefined when MODE>2
and TIMER_MODE=4,5,6.
0: STATIC
1: TOGGLE
2: SAMPLENOW
3: PULSENOW
4: PULSE
5: PWM
6: MEASURE_LOW
7: MEASURE_HIGH
8: MEASURE_LOW_ONCE
9: MEASURE_HIGH_ONCE
10: MEASURE_NEG
11: MEASURE_POS
12: MEASURE_ANY
13: MEASURE_NEG_ONCE
14: MEASURE_POS_ONCE
15: MEASURE_ANY_ONCE
26:24 INTRMODE R RW 0
Interrupt mode
0: No interrupt
1: Interrupt on posedge on IN_VALUE
2: Interrupt on negedge on IN_VALUE
3: Interrupt on any edge on IN_VALUE
4: Interrupt when IN_VALUE is low
5: Interrupt when IN_VALUE is high
6: Interrupt on TIMER = THRESHOLD
7: Interrupt on TIMER = 0
27 INTR RW1S RW1C 0
Registers edge triggered interrupt condition. Only relevant
when INTRMODE=1,2,3,6,7. When INTRMODE=4,5 pin
status is fed directly to interrupt controller; condition can
be observed through IN_VALUE in this case.
30:28
TIMER_MOD
E
R RW 0
0: Shutdown GPIO_TIMER
1: Use high frequency (See CyU3PGpioInit)
2: Use low frequency (See CyU3PGpioInit)
3: Use standby frequency
4: Use posedge (sampled using high frequency)
5: Use negedge (sampled using high frequency)
6: Use any edge (sampled using high frequency)
7: Reserved
Note: Changing TIMER_MODE when ENABLE=1 will
result in undefined behavior.
31 ENABLE R RW 0 Enable GPIO logic for this pin.
Bits Name HW SW Default Description