
EZ-USB TRM v1.9
Table of Contents
v
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
9.10
9.11
9.12
9.13
9.14
EZ-USB Resets ..............................................................................10-1
10.1
Introduction ...........................................................................................10-1
10.2
EZ-USB Power-On Reset (POR) ..........................................................10-1
10.3
Releasing the 8051 Reset ......................................................................10-3
10.3.1
RAM Download ......................................................................10-4
10.3.2
EEPROM Load ......................................................................10-4
10.3.3
External ROM ........................................................................10-4
10.4
8051 Reset Effects ................................................................................10-4
10.5
USB Bus Reset ......................................................................................10-5
10.6
EZ-USB Disconnect .............................................................................10-7
10.7
Reset Summary .....................................................................................10-8
EZ-USB Power Management ......................................................11-1
11.1
Introduction ...........................................................................................11-1
11.2
Suspend .................................................................................................11-2
11.3
Resume ..................................................................................................11-3
11.4
Remote Wakeup ....................................................................................11-4
EZ-USB Registers .........................................................................12-1
12.1
Introduction ...........................................................................................12-1
12.2
Bulk Data Buffers .................................................................................12-3
12.3
Isochronous Data FIFOs .......................................................................12-4
12.4
Isochronous Byte Counts ......................................................................12-6
12.5
CPU Registers .......................................................................................12-8
12.6
Port Configuration ................................................................................12-9
12.7
Input-Output Port Registers ................................................................12-11
USB Core Interrupts ...............................................................................9-1
Wakeup Interrupt ....................................................................................9-2
USB Signaling Interrupts ........................................................................9-4
SUTOK, SUDAV Interrupts ...................................................................9-8
SOF Interrupt ..........................................................................................9-9
Suspend Interrupt ....................................................................................9-9
USB RESET Interrupt ............................................................................9-9
Bulk Endpoint Interrupts ........................................................................9-9
USB Autovectors ..................................................................................9-10
Autovector Coding ................................................................................9-11
I
2
C Interrupt ..........................................................................................9-13
In Bulk NAK Interrupt - (AN2122/AN2126 only) ...............................9-13
I
2
C STOP Complete Interrupt - (AN2122/AN2126 only) ....................9-15
10
11
12