TMS320F28335, TMS320F28334, TMS320F28332
TMS320F28235, TMS320F28234, TMS320F28232
www.ti.com
SPRS439M –JUNE 2007–REVISED AUGUST 2012
4.7.2
4.7.3
ADC Registers .................................................................................................. 82
ADC Calibration ................................................................................................. 83
4.8
4.9
Multichannel Buffered Serial Port (McBSP) Module .................................................................. 83
Enhanced Controller Area Network (eCAN) Modules (eCAN-A and eCAN-B) .................................... 86
4.10 Serial Communications Interface (SCI) Modules (SCI-A, SCI-B, SCI-C) .......................................... 91
4.11 Serial Peripheral Interface (SPI) Module (SPI-A) ..................................................................... 95
4.12 Inter-Integrated Circuit (I2C) ............................................................................................. 98
4.13 GPIO MUX ................................................................................................................. 99
4.14 External Interface (XINTF) .............................................................................................. 106
Device Support ................................................................................................................ 108
5
6
5.1
5.2
5.3
Device and Development Support Tool Nomenclature ............................................................. 108
Documentation Support ................................................................................................. 110
Community Resources .................................................................................................. 115
Electrical Specifications ................................................................................................... 116
6.1
6.2
6.3
6.4
Absolute Maximum Ratings ............................................................................................ 116
Recommended Operating Conditions ................................................................................. 117
Electrical Characteristics ................................................................................................ 117
Current Consumption .................................................................................................... 118
6.4.1
6.4.2
6.4.3
Reducing Current Consumption ............................................................................. 120
Current Consumption Graphs ............................................................................... 121
Thermal Design Considerations ............................................................................. 122
6.5
6.6
Emulator Connection Without Signal Buffering for the DSP ....................................................... 123
Timing Parameter Symbology .......................................................................................... 124
6.6.1
6.6.2
6.6.3
General Notes on Timing Parameters ...................................................................... 124
Test Load Circuit .............................................................................................. 124
Device Clock Table ........................................................................................... 125
6.7
6.8
Clock Requirements and Characteristics ............................................................................. 126
Power Sequencing ....................................................................................................... 127
6.8.1
Power Management and Supervisory Circuit Solutions .................................................. 128
6.9
General-Purpose Input/Output (GPIO) ................................................................................ 131
6.9.1
6.9.2
6.9.3
6.9.4
GPIO - Output Timing ........................................................................................ 131
GPIO - Input Timing .......................................................................................... 132
Sampling Window Width for Input Signals ................................................................. 133
Low-Power Mode Wakeup Timing .......................................................................... 134
6.10 Enhanced Control Peripherals ......................................................................................... 139
6.10.1 Enhanced Pulse Width Modulator (ePWM) Timing ....................................................... 139
6.10.2 Trip-Zone Input Timing ....................................................................................... 139
6.10.3 High-Resolution PWM Timing ............................................................................... 140
6.10.4 Enhanced Capture (eCAP) Timing ......................................................................... 140
6.10.5 Enhanced Quadrature Encoder Pulse (eQEP) Timing ................................................... 141
6.10.6 ADC Start-of-Conversion Timing ............................................................................ 142
6.11 External Interrupt Timing ................................................................................................ 142
6.12 I2C Electrical Specification and Timing ............................................................................... 143
6.13 Serial Peripheral Interface (SPI) Timing .............................................................................. 143
6.13.1 Master Mode Timing .......................................................................................... 143
6.13.2 SPI Slave Mode Timing ...................................................................................... 148
6.14 External Interface (XINTF) Timing ..................................................................................... 151
6.14.1 USEREADY = 0 ............................................................................................... 151
6.14.2 Synchronous Mode (USEREADY = 1, READYMODE = 0) ............................................. 152
6.14.3 Asynchronous Mode (USEREADY = 1, READYMODE = 1) ............................................ 153
6.14.4 XINTF Signal Alignment to XCLKOUT ..................................................................... 155
6.14.5 External Interface Read Timing ............................................................................. 156
6.14.6 External Interface Write Timing ............................................................................. 158
Copyright © 2007–2012, Texas Instruments Incorporated
Contents
3
TI [ TEXAS INSTRUMENTS ]
