2
3-4200-D1-2.0-0403
STIr4200
USB/IrDA Bridge Controller
OFFICIAL
PRODUCT
DOCUMENTA TI ON
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
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