Integrated Mixed-Signal Solutions
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STIr4200
USB/IrDA Bridge Controller
Version 2.0 April `03
OFFICIAL PRODUCT DOCUMENTATION
3-4200-D1-2.0-0403
2
3-4200-D1-2.0-0403
STIr4200
USB/IrDA Bridge Controller
O F F I C I A L P R O D U C T D O C U M E N T A T I O N
1. TABLE OF CONTENTS
1. TABLE OF CONTENTS .............................................................................................. 2
1.1. List of Figures .................................................................................................................... 3
1.2. List of Tables ..................................................................................................................... 3
2. PRODUCT OVERVIEW ............................................................................................... 4
2.1. Features ............................................................................................................................ 4
2.2. Description ........................................................................................................................ 4
2.3. Ordering Information ......................................................................................................... 4
2.4. STIr4200 Block Diagram .................................................................................................. 5
3. CHARACTERISTICS AND SPECIFICATIONS ........................................................... 5
3.1. Absolute Maximum Ratings .............................................................................................. 5
3.2. Recommended Operating Conditions ............................................................................... 5
3.3. Electrical Characteristics ................................................................................................... 6
4. FUNCTIONAL DESCRIPTION .................................................................................... 6
4.1. Overview ........................................................................................................................... 6
4.2. USB Interface .................................................................................................................... 7
4.3. Vendor-Specific Device Requests ..................................................................................... 7
4.3.1. Write Multiple Registers ....................................................................................... 7
4.3.2. Write One Register ............................................................................................... 7
4.3.3. Read Multiple Registers ....................................................................................... 8
4.3.4. Read ROM ........................................................................................................... 8
4.3.5. Vendor Clear Stall ................................................................................................ 8
4.4. Digital IR Transceiver ........................................................................................................ 9
4.5. FIFO Contents ................................................................................................................... 9
5. IR FRAMING FORMATS ........................................................................................... 10
5.1. Transmit Frame Format .................................................................................................. 10
5.1.1. SIR Transmit Frame ........................................................................................... 10
5.1.2. FIR Transmit Frame ........................................................................................... 11
5.1.3. Receive Frame Format ....................................................................................... 12
5.1.3.1. SIR Receive Frame ............................................................................12
5.1.3.2. FIR Receive Frame ............................................................................13
6. DIGITAL IR TRANSCEIVER REGISTERS ................................................................ 14
6.1. Detailed STIr4200 Register Descriptions ....................................................................... 14
6.1.1. FIFO Data Register ............................................................................................ 14
6.1.2. Mode and Baud Rate Registers ......................................................................... 15
6.1.2.1. Mode Register .................................................................................... 15
6.1.2.2. Baud Rate Register ............................................................................15
6.1.3. Control Register ................................................................................................. 16
6.1.4. Sensitivity Register ............................................................................................. 17
6.1.5. Status Register ................................................................................................... 17
6.1.6. FIFO Count Registers (LSB,MSB) .....................................................................18
6.1.6.1. FIFO Count LSB ................................................................................. 18
6.1.6.2. FIFO Count MSB ................................................................................ 18
6.1.7. DPLL Tune Register ........................................................................................... 18
6.1.8. IRDIG Setup Register .........................................................................................19
6.1.9. Test Register ......................................................................................................19
7. PIN DESCRIPTION .................................................................................................... 20
7.1. STIr4200S 28-Pin SSOP Pin Description ....................................................................... 20
8. PACKAGE DRAWINGS ............................................................................................ 21
4
3-4200-D1-2.0-0403
STIr4200
USB/IrDA Bridge Controller
O F F I C I A L P R O D U C T D O C U M E N T A T I O N
2. PRODUCT OVERVIEW
2.1.
Features
Low-power CMOS design
IrDA data rates from 2.4 Kbps to 4 Mbps
Obtains power from USB port
Uses standard IrDA transceivers
Optional LED driver for additional flexibility
LED driver capable of > 650 ma @ 5V, 25% duty cycle
Full compliance to IrDA 1.3 and USB 1.1 specifications
4 Kbyte FIFO buffer memory
Requires a single 12 Mhz crystal
Windows 98/98SE/ME/2000/XPTM NDIS/USB driver
Low-profile 28-Pin SSOP package
2.2.
Description
The SigmaTel STIr4200 is a low cost, low power, USB/IrDA Bridge Controller inte-
grated circuit for enabling IrDA wireless data communications through a standard
PC USB port. The STIr4200 directly interfaces to both single path and dual path
receive IrDA transceiver module architectures and contains a USB controller, IrDA
controller, interface logic, and memory buffer for full IrDA 1.3, 4 Mbps data transfer
rates. A block diagram is hown in Figure 1.
The STIr4200 is bundled with a Windows 98/98SE/ME/2000/XPTM NDIS/USB driver
for enabling the implementation of a cost effective USB/IrDA Adapter solution for
wireless data communications.
2.3.
Ordering Information
Part Number
Package
Temp Range
Supply Range
STIr4200S
28-Pin SSOP
0 C to +70 C
Vdd = 3.1 - 3.6V
Infrared
Communication
Transmission
Infrared
Transceiver
SigmaTel USB/
IrDA Bridge
Controller
Data
Transfer
USB
Connection
to the PC
3-4200-D1-2.0-0403
5
STIr4200
USB/IrDA Bridge Controller
O F F I C I A L P R O D U C T D O C U M E N T A T I O N
2.4.
STIr4200 Block Diagram
3. CHARACTERISTICS AND SPECIFICATIONS
3.1.
Absolute Maximum Ratings
3.2.
Recommended Operating Conditions
Symbol
Parameter
MIN
MAX
UNITS
CONDITIONS
P
D
Power Dissipation (Package constraint)
mW
T
A
Operating Temperature
0
70
C
T
J
Lead Solder Temperature
260
C
for 10 sec max.
T
S
Storage Temperature
-55
125
C
V
CC
Supply Voltage
-0.3 V
6
V
Vmax
Voltage at any pin
V
DD
+ 0.4V
V
ESD
Electrostatic Discharge (ESD)
+/- 2KV
V
See Note 1
Note:
1.
The device meets the JESD22-A114-A Electrostatic Discharge (ESD) Sensitivity Testing Human Body Model
(HBM) requirements of +/- 2KV on all pins, except the TXDIODE pin (Pin 2), where the limit is +/1.5KV.
Table 1. Absolute Maximum Ratings
Symbol
Parameter
MIN
TYP
MAX
UNITS
CONDITION
V
DD
Supply Voltage
3.1
3.3
3.6
V
T
A
Operating Temperature Range
0
25
70
C
Table 2. Recommended Operating Conditions
USB - IRDA Bridge IC
US
B
-
I
RDA
I
n
t
e
rf
ac
e Logi
c
IR Register
Set
Ir
D
A
D
i
g
i
ta
l
In
te
r
f
a
c
e
4K FIFO
Buffer
IrDA Controller
U
S
B
Po
r
t
In
te
r
f
a
c
e
Control
Bulk Out
Bulk In
USB Controller
UOUT
TX
DATA
RX
FAST
RX
SLOW
12 Mhz
Optional LED Driver
+V
D POS
D NEG
Gnd
SD/MODE (TEMIC
ONLY)
TXD
USB Port
IrDA
Transceiver
Interface
TX DIODE
RXD/R XFAST
RXSLOW (DUAL
RECEIVE PATH)
Figure 1. STIr4200 Block Diagram
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