Cypress EZ-USB FX3 User Manual

EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 598
PIN_STATUS
0xE0001000
10.23 General Purpose IO Registers (one pin)
10.23.1 PIN_STATUS
IO Pin Status Register (one pin)
This register controls mode of operation and configuration for a single IO Pin. It also exposes status and read value.
31 ENABLE Enable GPIO logic for this pin.
30:28 TIMER_MODE[2:0] 0 Shutdown GPIO_TIMER
1 Use high frequency (e.g. 50MHz)
2 Use low frequency (e.g. 1MHz)
3 Use standby frequency (32KHz)
4 Use positive edge (sampled using high frequency)
5 Use negative edge (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.
27 INTR Registers edge triggered interrupt condition. Only relevant when INTRMODE=1,2,3,6,7. When INTR-
MODE=4,5 pin status is fed directly to interrupt controller; condition can be observed through
IN_VALUE in this case.
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PIN_STATUS Configuration, mode and status of IO Pin 0xE0001000
b31 b30 b29 b28 b27 b26 b25 b24
ENABLE TIMER_MODE[2:0] INTR INTRMODE[2:0]
R/W R/W R/W R/W R/W1C R/W R/W R/W
RRRRR/W1SRRR
00000000
PIN_STATUS Configuration, mode and status of IO Pin
b23 b22 b21 b20 b19 b18 b17 b16
PIN_STATUS Configuration, mode and status of IO Pin
b15 b14 b13 b12 b11 b10 b9 b8
MODE[3:0]
R/W R/W R/W R/W
R/W R/W R/W R/W
0000
PIN_STATUS Configuration, mode and status of IO Pin
b7 b6 b5 b4 b3 b2 b1 b0
INPUT_EN DRIVE_HI_EN DRIVE_LO_EN IN_VALUE OUT_VALUE
R/W R/W R/W RR/W
RRR WR/W
000 01
Bit Name Description

Cypress EZ-USB FX3 Specifications

General

Brand	Cypress
Model	EZ-USB FX3
Category	Controller
Language	English