
EZ-USB FX2 Technical Reference Manual
Page 1-16 EZ-USB FX2 Technical Reference Manual v2.1
1.16 Packages
FX2 is available in three packages:
Figure 1-10. 56-pin, 100-pin, and 128-pin FX2 Packages
1.16.1 56-Pin Package
Twenty-four general-purpose I/O pins (ports A, B, and D) are available. Sixteen of these I/O pins
can be configured as the 16-bit data interface to the FX2’s internal high-speed 16-bit FIFOs, which
can be used to implement low cost, high-performance interfaces such as ATAPI, UTOPIA, EPP,
etc. The 56-pin package has the following:
• Three 8-bit I/O ports: PORTA, PORTB, and PORTD
• I²C-compatible bus
• An 8- or 16-bit General Programmable Interface (GPIF) multiplexed onto PORTB and
PORTD, with five non-multiplexed control signals
• Four 8- or 16-bit Slave FIFOs, with five non-multiplexed control signals and four or five
control signals multiplexed with PORTA
128
TQFP
14x20x1.4
mm
100
TQFP
14x20x1.4
mm
56
SSOP
8x18x2.3
mm
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