73M1903 Data Sheet
DS_1903_032
Table of Contents
1
2
Signal Description.................................................................................................................................4
1.1 Serial Interface.............................................................................................................................5
Control and Status Registers................................................................................................................8
2.1 GPIO ..........................................................................................................................................10
2.1.1 GPIO Data (GPIO): Address 02h..................................................................................10
2.1.2 GPIO Direction (DIR): Address 03h..............................................................................10
2.2 Analog I/O..................................................................................................................................10
2.2.1 Control Register (CTRL 11): Address 0Bh ....................................................................11
2.2.2 Control Register (CTRL 12): Address 0Ch....................................................................11
2.2.3 Control Register (CTRL 13): Address 0Dh....................................................................12
2.2.4 Control Register (CTRL 14): Address 0Eh ....................................................................12
3
Clock Generation ................................................................................................................................13
3.1 Crystal Oscillator and Pre-scaler NCO ......................................................................................13
3.1.1 Control Register (CTRL 8): Address 08h.......................................................................13
3.1.2 Control Register (CTRL 9): Address 09h.......................................................................13
3.1.3 Control Register (CTRL 10): Address 0Ah ....................................................................13
4
5
Modem Receiver.................................................................................................................................18
Modem Transmitter.............................................................................................................................21
5.1 Transmit Levels..........................................................................................................................22
5.2 Transmit Power - dBm ...............................................................................................................23
5.3 Control Register (CTRL1): Address 00h...................................................................................23
5.4 Control Register (CTRL2): Address 01h...................................................................................24
5.5 Revision Register: Address 06h ................................................................................................24
6
7
8
Test Modes .........................................................................................................................................25
Power Saving Modes..........................................................................................................................25
Electrical Specifications ......................................................................................................................26
8.1 Absolute Maximum Ratings.......................................................................................................26
8.2 Recommended Operating Conditions........................................................................................26
8.3 Digital Specifications..................................................................................................................27
8.3.1 DC Characteristics.........................................................................................................27
8.3.2 AC Timing ......................................................................................................................28
8.4 Analog Specifications.................................................................................................................29
8.4.1 DC Specifications ..........................................................................................................29
8.4.2 AC Specifications...........................................................................................................29
8.5 Performance ..............................................................................................................................30
8.5.1 Receiver.........................................................................................................................30
8.5.2 Transmitter.....................................................................................................................31
9
Pinouts ................................................................................................................................................33
9.1 32-Pin QFN Pinout.....................................................................................................................33
9.2 20-Pin TSSOP Pinout ................................................................................................................34
10 Mechanical Specifications...................................................................................................................35
10.1 32-Pin QFN Mechanical Drawings.............................................................................................35
10.2 20-Pin TSSOP Mechanical Drawings........................................................................................36
11 Ordering Information...........................................................................................................................37
Appendix A – 73M1903 DAA Resistor Calculation Guide ..........................................................................38
Appendix B – Crystal Oscillator ..................................................................................................................41
Revision History ..........................................................................................................................................46
2
Rev. 2.0
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
