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Application Report
SPRAA89A–September 2009
TMS320C6455 Design Guide and Comparisons to
TMS320TC6416T
HPMP Products................................................................................. Digital Signal Processing Solutions
ABSTRACT
This document describes system design considerations for the TMS320C6455 (C6455). It also gives
comparisons to designing with the TMS320C6416T (C6416T) for those familiar with that device. The
objective of this document is to cover system design considerations for the C6455. Those familiar with the
C6416T can use the comparisons to migrate a C6416T design to the C6455. In some cases there is
information overlapping with the C6455 data manual. If the information does not match the data manual
information takes precedence.
Contents
1 Device Overview with Comparison to the C6416T ..................................................................... 3
2 Device Identification (ID) ................................................................................................... 4
3 Pin and Package Compatibility ............................................................................................ 4
4 Device Configurations and Initialization .................................................................................. 5
5 Clocking ...................................................................................................................... 7
6 Power Supply .............................................................................................................. 13
7 I/O Buffers .................................................................................................................. 21
8 Peripheral Section ......................................................................................................... 21
9 References ................................................................................................................. 37
Appendix A C6455 RGMII 1.5 V/1.8 V to 2.5 V/3.3 V Translation ........................................................ 39
List of Figures
1 CLKIN1, CLKIN2 Single Device Clock Solution......................................................................... 9
2 PLL1, PLL2 Multiple Device Clock Solution............................................................................ 10
3 RIOCLK Single Device LVDS Clock Solution.......................................................................... 11
4 RIOCLK Multiple Devices LVDS Clock Solution ...................................................................... 11
5 RIOCLK Multiple Devices LVDS Clock Solution ...................................................................... 12
6 RIOCLK Multiple Devices LVPECL Clock Solution ................................................................... 12
7 Power Supply Generation................................................................................................ 14
8 Recommended Power Supply Filter .................................................................................... 15
9 Reference Voltage Generation .......................................................................................... 15
10 Multiple DSP Remote Sense Connections............................................................................. 17
11 Single DSP Remote Sense Connections............................................................................... 18
12 McBSP 8 Load Routing Topology....................................................................................... 26
13 HSTL to LVCMOS Translation........................................................................................... 34
14 RGMII Voltage Level Translation Circuit ............................................................................... 39
List of Tables
1 C6455 Features, Comparison to C6416T Processor................................................................... 3
2 C6455 and C6416T JTAG (BSDL) IDs................................................................................... 4
3 Pin and Package Differences ............................................................................................. 5
4 Clocking Differences between C6455 and C6416T .................................................................... 7
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SPRAA89A–September 2009 TMS320C6455 Design Guide and Comparisons to TMS320TC6416T
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