Fairchild USB100 service manual

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PRELIMINARY

USB100
Programmable Low-Cost USB Machine (PLUM)

Single Chip Controller for Mouse, Trackball, Joystick and Gamepad Applications

USB100 Programmable Low-Cost USB Machine (PLUM)

January 1999

General Description

The USB100 is a Low cost, fully customizable controller for USB
HID-class pointing devices. It is in full compliance with REV 1.0
of the USB standard and implements the HID class specification
for mice, trackballs, joysticks and gamepads. This device inter­prets the commands specified in the HID class document and
provides appropriate responses from an On-Chip EEPROM. It
also provides ability to customize the device according to indi­vidual needs of the designers. Programming utilities supplied with
this device allow HID manufacturers to easily create the neces­sary data to be programmed into the device.

The device includes the necessary transceiver for USB operation
and meets all of the active and standby current specifications for
a bus-powered device.

Block Diagram

Features

■ USB 1.0 standard compliant

■ Has the necessary on-chip transceivers

■ Support for 2D and 3D mice with 2, 3 or more buttons

■ Supports 3 potentiometer mechanisms for joysticks

■ Up to 16 buttons for digital gamepads

■ Choice of 18-pin and 24-pin packages

■ Choice of 2Kbit and 4Kbit EEPROM densities

POWER

USB

COMMAND

PROCESSOR

(HID)

EEPROM

USB100 rev.D
© 1999 Fairchild Semiconductor Corporation

TX-FIFO

RX-FIFO

STATE MACHINE

UP TO 3 ROLLER/

POTENTIOMETER

MECHANISMS

SERIAL

INTERFACE

ENGINE

UP TO 16 BUTTONS

1

X
C
V
R

Use "A Diagram Number" Style Sheet"

USB CABLE
(D+, D-,
POWER &
GROUND)

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Pinout

USB100 Programmable Low-Cost USB Machine (PLUM)

24 Pin Package 18 Pin 3D Package

OSC1 VDD
OSC2 B6

H4 USBD+

B8/F USBD-

RESET GND

H3 B7
H1 B5
H2 B1
V1 B2
V2 B3

O2 B4

GND O1

Pin Description

Pin Type Description

H4 I Roller/Button/Joystick input.
H3 I Roller/Button/Joystick input.

O2 I/O Register output pin / Button input.
OSC1 I Crystal input number 1.
OSC2 I Crystal input number 2

B4 I Button input
Reset I Active high reset pin

H1 I Roller/Button/Joystick input.

H2 I Roller/Button/Joystick input.

V1 I Roller/Button/Joystick input.

V2 I Roller/Button/Joystick input.

GND I Ground

B7 I Button input

B6 I Button input

B5 I Button input

VDD I Positive power supply

USBD+ O USB D + line

USBD- O USB D – line

GND I Ground
B8/F I/O Button input / LED driver

B1/CS I Button input and chip select to internal

B2/SK I Button input and system clock to internal

B3/DI I Button input and data in to internal

O1/DO O Button input and data out to read from

* See Programming internal EEPROM section

OSC2 OSC1

H4 VDD

F USBD+

RESET USBD-

H3 GND
H1 B1
H2 B2
V1 B3
V2 O1

EEPROM.*

EEPROM.*

EEPROM.*

internal EEPROM.*

USB100 rev.D

2

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USB100 Programmable Low-Cost USB Machine (PLUM)

Absolute Maximum Ratings

Ambient Storage Temperatures -65°C to + 150°C
All Input or Output Voltages with VCC + 1 to – 0.3V

Operating Conditions

Ambient Operating Temperature 0°C to +70°C
Power Supply (VCC) Range 4.4V to 5.5V

respect to ground

Lead Temperature +300%

(Soldering, 10 seconds)

ESD Rating 2000V

DC and AC Electrical Characteristics 4.4V ≤ VCC ≤ 5.5V

Symbol Parameter Conditions Min Max Units

I

CCA

I

CCS

V

IL

V

IH

V

OL

V

OH

I

IL

I

OL

F

SK

T

SKH

T

SKL

T

CS

T

CSS

T

DH

T

DIS

T

CSH

T

DIH

T

PD1

T

PD0

T

SY

T

DF

T

WP

Operating Current USB interface in active mode 40 mA
Standby Current USB interface in suspend 500 µA
Input Low Voltage 0.8 V
Input High Voltage 2 V
Output Low Voltage 0.4 V
Output High Voltage 2.4 V
Input Leakage Current 2.5 µA
Output Leakage Current 2.5 µA
SK Clock Frequency Note 3 0 1 MHz
SK High Time 250 ns
SK Low Time 250 ns
Minimum CS Low Time Note 4 250 ns
CS Setup Time 50 ns
DO Hold Time 70 ns
DI Setup Time 100 ns
CS Hold Time 0 ns
DI Hold Time 20 ns
Output Delay to “1” 500 ns
Output Delay to “0” 500 ns
CS to Status Valid 500 ns
CS to DO in TRI-STATE 100 ns
Write Cycle Time 10 ms

AC Test Conditions

Output Load 1 TTL Gate
Input Pulse Levels 0.4V and 2.4V

Note 1: Stress ratings above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and operation of the
device at these or any other conditions above those indicated in the operational sections of the specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.

Note 2: The shortest allowable S clock period = 1/fSK (as shown under the fSK parameter). Maximum SK clock speed (minimum SK period) is determined by the interaction of
several AC parameters stated in the datasheet. Within this SK period, both t
t

(minimum) for shorter SK cycle time operation.

SKL

Note 3: CS (Chip Select) must be brought low (to VIL) for an interval of tCS in order to reset all internal device registers (device reset) prior to beginning another opcode cycle.
(This is shown in the opcode diagrams in the following pages.)

USB100 rev.D

SKH

and t

Timing Measurements Reference Level

Input 1V and 2V
Output 0.8V and 2.0V

limits must be observed. Therefore, it is not allowable to set 1/fSK = t

SKL

3

SKH

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(minimum) +