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EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 3

Contents

1. Introduction to EZ-USB FX3 19

1.1 Overview of USB 3.0 ..............................................................................................................19

1.1.1 Physical Layer.............................................................................................................19

1.1.2 Link Layer....................................................................................................................20

1.1.3 Protocol Layer .............................................................................................................21

1.1.3.1 Unicast Transactions ...................................................................................21

1.1.3.2 Token/ Data/Handshake Sequences...........................................................21

1.1.3.3 Data Bursting...............................................................................................23

1.1.3.4 End-to-End Flow Control .............................................................................24

1.1.3.5 Streams .......................................................................................................25

1.2 SuperSpeed Power Management...........................................................................................25

1.2.1 Function Power Management .....................................................................................26

1.3 FX3/FX3S Features ................................................................................................................26

1.3.1 FX3 Block Diagram .....................................................................................................28

1.3.2 FX3S Block Diagram...................................................................................................29

1.4 Functional Overview ...............................................................................................................29

1.4.1 CPU.............................................................................................................................29

1.4.2 DMA ............................................................................................................................30

1.4.3 USB Interface..............................................................................................................30

1.4.4 GPIF II.........................................................................................................................30

1.4.5 UART Interface ...........................................................................................................31

1.4.6 I2C Interface................................................................................................................31

1.4.7 I2S Interface................................................................................................................31

1.4.8 SPI Interface ...............................................................................................................31

1.4.9 JTAG Interface ............................................................................................................31

1.4.10 Storage Interface.........................................................................................................31

1.4.10.1 SD/MMC Clock Stop....................................................................................32

1.4.10.2 SD_CLK Output Clock Stop ........................................................................32

1.4.10.3 Card Insertion and Removal Detection........................................................32

1.4.10.4 Write Protection (WP)..................................................................................32

1.4.10.5 SDIO Interrupt .............................................................................................32

1.4.10.6 SDIO Read-Wait Feature ............................................................................32

1.4.10.7 Boot Options................................................................................................32

1.4.11 Clocking ......................................................................................................................33

2. FX3 CPU Subsystem 34

2.1 Features..................................................................................................................................34

2.2 Block Diagram ........................................................................................................................35

2.3 Functional Overview ...............................................................................................................35

2.3.1 ARM926EJ-S CPU......................................................................................................35

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