EZ-USB Datasheet, PDF (5/334 Pages) Cypress Semiconductor – The EZ-USB USB Integrated Circuit

1.16 Reset and Power Management .............................................................. 1-15
1.17 EZ-USB Product Family ....................................................................... 1-16
1.18 Summary of AN2122, AN2126 Features ............................................. 1-16
1.19 Revision ID ........................................................................................... 1-17
1.20 Pin Descriptions .................................................................................... 1-18
2 EZ-USB CPU .................................................................................. 2-1
2.1 Introduction ............................................................................................. 2-1
2.2 8051 Enhancements ................................................................................ 2-1
2.3 EZ-USB Enhancements .......................................................................... 2-2
2.4 EZ-USB Register Interface ..................................................................... 2-2
2.5 EZ-USB Internal RAM ........................................................................... 2-3
2.6 I/O Ports .................................................................................................. 2-3
2.7 Interrupts ................................................................................................. 2-4
2.8 Power Control ......................................................................................... 2-5
2.9 SFRs ........................................................................................................ 2-6
2.10 Internal Bus ............................................................................................. 2-7
2.11 Reset ........................................................................................................ 2-7
3 EZ-USB Memory ............................................................................ 3-1
3.1 Introduction ............................................................................................. 3-1
3.2 8051 Memory .......................................................................................... 3-2
3.3 Expanding EZ-USB Memory ................................................................. 3-4
3.4 CS# and OE# Signals .............................................................................. 3-5
3.5 EZ-USB ROM Versions ......................................................................... 3-7
4 EZ-USB Input/Output ................................................................... 4-1
4.1 Introduction ............................................................................................. 4-1
4.2 IO Ports ................................................................................................... 4-2
4.3 IO Port Registers ..................................................................................... 4-5
4.4 I2C Controller ......................................................................................... 4-6
4.5 8051 I2C Controller ................................................................................ 4-6
4.5.1 START ...................................................................................... 4-8
4.5.2 STOP ........................................................................................ 4-8
4.6 Control Bits ............................................................................................. 4-8
4.6.1 LASTRD ................................................................................... 4-9
4.6.2 DONE ....................................................................................... 4-9
4.6.3 ACK .......................................................................................... 4-9
4.7 Status Bits ............................................................................................... 4-9
4.7.1 BERR ...................................................................................... 4-10
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Table of Contents
EZ-USB TRM v1.9