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PDF EZ-USB Data sheet ( Hoja de datos )
| Número de pieza | EZ-USB | |
| Descripción | The EZ-USB USB Integrated Circuit | |
| Fabricantes | Cypress Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EZ-USB (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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The EZ-USBTM
Integrated Circuit
Technical Reference
1 page  
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
ii
Table of Contents
EZ-USB TRM v1.9
5 Page 
Figure 6-9.
Figure 6-10.
Figure 6-11.
Figure 6-12.
Figure 6-13.
Figure 6-14.
Figure 7-1.
Figure 7-2.
Figure 7-3.
Figure 7-4.
Figure 7-5.
Figure 8-1.
Figure 8-2.
Figure 8-3.
Figure 8-4.
Figure 8-5.
Figure 8-6.
Figure 8-7.
Figure 8-8.
Figure 8-9.
Figure 8-10.
Figure 8-11.
Figure 8-12.
Figure 8-13.
Figure 8-14.
Figure 8-15.
Figure 9-1.
Figure 9-2.
Figure 9-3.
Figure 9-4.
Figure 9-5.
Figure 9-6.
Figure 9-7.
Figure 9-8.
Figure 9-9.
Figure 9-10.
Figure 9-11.
Figure 9-12.
Figure 9-13.
Figure 10-1.
Figure 11-1.
Figure 11-2.
Figure 11-3.
Figure 11-4.
Interrupt Service Routine (ISR) for Endpoint 6-OUT ..................................... 6-19
Background Program Transfers Endpoint 6-OUT Data to Endpoint 6-IN ...... 6-20
Initialization Routine ........................................................................................ 6-21
Autopointer Registers ...................................................................................... 6-23
Use of the Autopointer ..................................................................................... 6-24
8051 Code to Transfer External Data to a Bulk IN Buffer .............................. 6-25
A USB Control Transfer (This One Has a Data Stage) ..................................... 7-2
The Two Interrupts Associated with EP0 CONTROL Transfers ...................... 7-3
Registers Associated with EP0 Control Transfers ............................................. 7-4
Data Flow for a Get_Status Request .................................................................. 7-7
Using the Setup Data Pointer (SUDPTR) for Get_Descriptor Requests ......... 7-13
EZ-USB Isochronous Endpoints 8-15 ................................................................ 8-1
Isochronous IN Endpoint Registers ................................................................... 8-2
Isochronous OUT Registers ............................................................................... 8-4
FIFO Start Address Format ................................................................................ 8-5
Assembler Translates FIFO Sizes to Addresses ................................................ 8-7
8051 Code to Transfer Data to an Isochronous FIFO (IN8DATA) ................... 8-8
8051 MOVX Instructions ................................................................................... 8-9
Fast Transfer, EZ-USB to Outside Memory .................................................... 8-10
Fast Transfer, Outside Memory to EZ-USB .................................................... 8-11
The FASTXFR Register Controls FRD# and FWR# Strobes .......................... 8-11
Fast Write Timing ............................................................................................ 8-12
Fast Read Timing ............................................................................................. 8-13
8051 Code to Transfer 640 Bytes of External Data to an Isochronous
IN FIFO ............................................................................................................ 8-14
ISOCTL Register ............................................................................................. 8-15
ZBCOUT Register ........................................................................................... 8-16
EZ-USB Wakeup Interrupt ................................................................................ 9-2
USB Interrupts ................................................................................................... 9-4
The Order of Clearing Interrupt Requests is Important ..................................... 9-6
EZ-USB Interrupt Registers ............................................................................... 9-7
SUTOK and SUDAV Interrupts ........................................................................ 9-8
A Start Of Frame (SOF) Packet ......................................................................... 9-9
The Autovector Mechanism in Action ............................................................. 9-12
I2C Interrupt Enable Bits and Registers ........................................................... 9-13
IN Bulk NAK Interrupt Request Register ........................................................ 9-14
IN Bulk NAK Interrupt Enable Register .......................................................... 9-14
I2C Mode Register ............................................................................................ 9-15
I2C Control and Status Register ....................................................................... 9-15
I2C Data ............................................................................................................ 9-15
EZ-USB Resets ................................................................................................ 10-1
Suspend-Resume Control ................................................................................. 11-1
EZ-USB Suspend Sequence ............................................................................. 11-2
EZ-USB Resume Sequence ............................................................................. 11-3
USB Control and Status Register ..................................................................... 11-4
viii
List of Figures
EZ-USB TRM v1.9
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EZ-USB.PDF ] | |
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