
Chapter 1. Introducing EZ-USB FX2 Page 1-15
1.15 FX2 Block Diagram
Figure 1-9. FX2 Block Diagram
8051
48 MHz
8 KB
Pgm/Data
RAM
4 KB
Endpoint
RAM
port D
GPIFFIFOS
16
General Purpose Interface
(e.g. ATA, EPP, etc.)
USB regs
0.5K Data
RAM
port B
port A
8
7
14
port E
port C
8
1
16
4
Ext
Clock
D+ D-
Data(8)
Addr(16)
2
SIO
2
i2c compatible SIO
2
PHY
Interface
24 MHz
crystal
USB
2.0
PHY
PLL
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