ADVANCE INFORMATION
8x930Ax
UNIVERSAL SERIAL BUS
MICROCONTROLLER
s
Complete Universal Serial Bus
Specification 1.0 Compatibility
— Supports Isochronous and
Non-isochronous Data
— Bidirectional Half-duplex Link
s
On-chip USB Transceiver
s
Serial Bus Interface Engine (SIE)
— Packet Decoding/Generation
— CRC Generation and Checking
— NRZI Encoding/Decoding and
Bit-stuffing
s
USB Reset Interrupt
s
Four Transmit FIFOs
— Three 16-byte FIFOs
— One Configurable FIFO (up to
1 Kbyte)
s
Four Receive FIFOs
— Three 16-byte FIFOs
— One Configurable FIFO (up to
1 Kbyte)
s
Automatic Transmit/Receive FIFO
Management
s
Suspend/Resume Operation
s
Three New USB Interrupt Vectors
— USB Function Interrupt
— Start of Frame
— Suspend/Resume
s
Phase-locked Loop
— 12 Mbps or 1.5 Mbps Data Rate
s
Low Clock Mode
s
User-selectable Configurations
— External Wait State
— Address Range
— Page Mode
s
Real-time Wait Function
s
256-Kbyte External Code/Data Memory
Space
s
On-chip ROM Options
— 0, 8, or 16 Kbytes
s
1 Kbyte On-chip Data RAM
s
Four Input/Output Ports
— 1 Open-drain port
— 3 Quasi-bidirectional Ports
s
Programmable Counter Array (PCA)
— 5 Capture/Compare Modules
s
Serial I/O Port (UART)
s
Hardware Watchdog Timer
s
Three Flexible 16-bit Timer/Counters
s
Power-saving Idle and Powerdown
Modes
s
Register-based MCS
®
251 Architecture
— 40-byte Register File
— Registers Accessible as Bytes,
Words, or Doublewords
s
Code Compatible with MCS 51 and MCS
251 Microcontrollers
s
6 or 12 MHz Crystal Operation
The 8x930Ax USB microcontroller is based on an 8xC251Sx microcontroller core. It consists of standard
8xC251Sx peripherals plus an added USB function. The 8x930Ax uses the standard instruction set of the
MCS 251 architecture, which is binary code compatible with the MCS 51 architecture. The USB function
integrates the USB transceiver, serial bus interface engine (SIE), function interface unit (FIU) and
transmit/receive FIFOs. The USB function also supports full-speed/low-speed data rates, suspend/resume
modes, isochronous/non-isochronous transfers, and is fully compliant with the USB rev 1.0 specification.
COPYRIGHT © INTEL CORPORATION, 1997
February 1997
Order Number:
272917-003
Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or oth-
erwise, to any intellectual property rights is granted by this document. Except as provided in Intel’s Terms and Conditions of
Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to
sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or
infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life
saving, or life sustaining applications.
Intel retains the right to make changes to specifications and product descriptions at any time, without notice.
The product may contain design defects or errors known as errata. Current characterized errata are available on request.
*Third-party brands and names are the property of their respective owners.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be
obtained from:
Intel Corporation
Literature Sales
P.O. Box 7641
Mt. Prospect, IL 60056-7641
or call 1-800-548-4725
COPYRIGHT © INTEL CORPORATION, 1997
CONTENTS
1.0 Nomenclature Overview ...................................................................................................... 3
2.0 Pinout .................................................................................................................................. 4
3.0 Signals ................................................................................................................................ 7
4.0 Address Map ..................................................................................................................... 10
5.0 Electrical Characteristics ................................................................................................... 11
5.1 Operating Frequencies ................................................................................................. 12
5.2 DC Characteristics........................................................................................................ 13
5.3 Definition of AC Symbols.............................................................................................. 15
5.4 AC Characteristics........................................................................................................ 16
5.4.1 System Bus AC Characteristics ............................................................................16
5.4.2 System Bus Timing Diagrams, Nonpage Mode ....................................................18
5.4.3 System Bus Timing Diagrams, Page Mode ...........................................................20
5.4.4 Definition of Real-time Wait Symbols ....................................................................22
5.4.5 Real-time Wait Function AC Characteristics .........................................................22
5.4.6 Real-Time Wait Function Timing Diagrams ...........................................................23
5.5 AC Characteristics — Serial Port, Synchronous Mode 0 ............................................. 27
5.6 External Clock Drive ..................................................................................................... 28
5.7 Testing Waveforms ...................................................................................................... 29
6.0 Thermal Characteristics .................................................................................................... 30
7.0 Product Reference ............................................................................................................ 30
7.1 External Bus Timing and Peripheral Timing Affected by PLLSEL2:0 Selection ........... 30
7.2 Low Clock Mode Frequency ......................................................................................... 30
7.3 Setting FFRC Bit Clears Only the Oldest Packet in the FIFO ...................................... 30
7.4 Series Resistor Requirement for Impedance Matching ................................................ 30
7.5 Pullup Requirement for Full Speed Device and Low Speed Device............................. 30
7.6 Powerdown Mode Cannot Be Invoked Before USB Suspend ...................................... 30
8.0 Specification Supplement for 8
x
930A
x
3 and 8
x
930A
x
4.................................................... 31
8.1 Six Endpoint Pairs Functionality ................................................................................... 31
8.2 DC Characteristics........................................................................................................ 31
8.3 Extended Data Float (EDF) AC Timing Feature ........................................................... 31
9.0 Device Errata .................................................................................................................... 34
10.0 Datasheet Revision History ............................................................................................... 34
iii
8x930Ax UNIVERSAL SERIAL BUS MICROCONTROLLER
Figures
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
8x930Ax Internal Block Diagram ..........................................................................................1
USB Module Block Diagram.................................................................................................2
Product Nomenclature .........................................................................................................3
8x930Ax 68-pin PLCC Package...........................................................................................4
Clock Circuit .......................................................................................................................12
8x930Ax Code Fetch, Nonpage Mode ...............................................................................18
8x930Ax Data Read, Nonpage Mode ................................................................................19
8x930Ax Data Write, Nonpage Mode.................................................................................19
8x930Ax Code Fetch, Page Mode .....................................................................................20
8x930Ax Data Read, Page Mode.......................................................................................21
8x930Ax Data write, Page Mode........................................................................................21
External Code Fetch/Data Read (Nonpage Mode, Real-time Wait State) .........................23
External Data Write (Nonpage Mode, Real-time Wait State) .............................................24
External Data Read (Page Mode, Real-time Wait State) ...................................................25
External Data Write (Page Mode, Real-time Wait State) ...................................................26
Serial Port Waveform — Synchronous Mode 0..................................................................27
External Clock Drive Waveforms........................................................................................28
AC Testing Input, Output Waveforms.................................................................................29
Float Waveforms ................................................................................................................29
Tables
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
Description of Product Nomenclature...................................................................................3
Proliferation Options.............................................................................................................3
68-pin PLCC Pin Assignment...............................................................................................5
68-pin PLCC Signal Assignments Arranged by Functional Category ..................................6
Signal Descriptions ..............................................................................................................7
Memory Signal Selections (RD1:0) ....................................................................................10
8
x
930A
x
Address Map .......................................................................................................10
Frequency Selection and Operating Frequency.................................................................12
DC Characteristics at Operating Conditions.......................................................................13
AC Timing Symbol Definitions............................................................................................15
AC Characteristics at Operating Conditions.......................................................................16
Real-time Wait Timing Symbol Definitions .........................................................................22
Real-time Wait AC Timing Specifications...........................................................................22
Serial Port Timing — Synchronous Mode 0 .......................................................................27
External Clock Drive...........................................................................................................28
Thermal Characteristics .....................................................................................................30
SIx Endpoint Pair Feature ..................................................................................................31
Effect of “EDF#” on Wait States .........................................................................................31
AC Characteristics for 8x930Ax3 and 8x930Ax4 in Compatibility Mode ............................32
8
x
930A
x
3 and 8
x
930A
x
4 Default and Extended Data Float Timings.................................32
8
x
930A
x
3 and 8
x
930A
x
4 Real-time Wait State AC Timing Specifications ........................33
iv
8x930Ax UNIVERSAL SERIAL BUS (USB) MICROCONTROLLER
System Bus and I/O Ports
P0.7:0
P2.7:0
I/O Ports and
Peripheral Signals
P1.7:0
P3.7:0
Port 0
Drivers
Port 2
Drivers
ROM
RAM
Port 1
Drivers
Port 3
Drivers
Memory Data (16)
Memory Address (16)
Watchdog
Timer
Bus Interface
Peripheral
Interface
Timer/
Counters
Interrupt
Handler
Data Address (24)
PCA
IB Bus (8)
Code Bus (16)
Code Address (24)
Instruction Sequencer
SRC2 (8)
Data Bus (8)
SRC1 (8)
Serial I/O
Clock
&
Reset
ALU
Register
File
Data
Memory
Interface
USB
†
DST (16)
Microcontroller Core
†
For details, see the USB module block diagram.
USB Ports
A4340-01
Figure 1. 8x930Ax Internal Block Diagram
ADVANCE INFORMATION
1
测试/测量
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