
EZ-USB FX2 Technical Reference Manual
Page 15-84 EZ-USB FX2 Technical Reference Manual v2.1
Bit 7 DONE GPIF Idle State
0 = Transaction in progress.
1 = Transaction Done (GPIF is idle, hence GPIF is ready for next Transaction). Fires IRQ4 if
enabled.
Bit 0 IDLEDRV Set Data Bus when GPIF Idle
When the GPIF is idle:
0 = Tri-state the Data Bus.
1 = Drive the Data Bus.
15.12.3 CTL Outputs
Figure 15-95. CTL Output States in Idle
Bit 7-4 CTLOE3:0 CTL Output Enables
Bit 5-0 CTL5:0 CTL Output States
See GPIFCTLCFG, below.
Figure 15-96. CTL Output Drive Type
Bit 7 TRICTL Number Active Outputs/Tristating
Bit 5-0 CTL5:0 CTL Output Drive Type
GPIFIDLECTL CTL Output States in Idle E6C2
b7 b6 b5 b4 b3 b2 b1 b0
0/
CTLOE3
0/
CTLOE2
CTL5/
CTLOE1
CTL4/
CTLOE0
CTL3 CTL2 CTL1 CTL0
R/W R/W R/W R/W R/W R/W R/W R/W
1 1 1 1 1 1 1 1
GPIFCTLCFG CTL Output Drive Type E6C3
b7 b6 b5 b4 b3 b2 b1 b0
TRICTL 0 CTL5 CTL4 CTL3 CTL2 CTL1 CTL0
R/W R/W R/W R/W R/W R/W R/W R/W
0 0 0 0 0 0 0 0
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