TMS320C6457
Communications Infrastructure Digital Signal Processor Data Manual PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters. Literature Number: SPRS582B
July 2010 TMS320C6457
Data Manual
SPRS582B—July 2010 www.ti.com Release History
Additions/Modifications/Deletions 2 SPRS582B Added 850 mHz clock speed. Added content to the Warm Reset section describing how to preserve contents of DDR2 SDRAM through a Warm Reset
cycle with Self-Refresh mode enabled on the SDRAM. Corrected typo in the Reset Timing Requirements table, parameter number 2: changed RESETx to RESET and POR to POR. Corrected 1.2-V to 1.1-V in last item of Features bullet list. SPRS582A Corrected CORECLK(P|N) and ALTCORECLK max frequency, minimum period time, duty cycle, and transition times Corrected Period Jitter tolerance, duty cycle, and transition times for DDRREFCLK(P|N) and ALTDDRCLK Corrected PLL2 block diagram to include correct reference to PLLV2 voltage net Added DDR2CLKOUT0(N|P) and DDR2CLKOUT0(N|P) min and max frequency to PLL2 Clock Frequency Ranges table Removed PLLOUT term from the PLL2 Clock Frequency ranges table Clarified wording in the introduction of the PLL2 section and on the effective x5 multiplier that generates
DDR2CLKOUT0(N|P) and DDR2CLKOUT0(N|P) from DDRREFCLK(P|N) or ALTDDRCLK Added Table 7-4 Power Supply to Peripheral I/O Mapping to clarify the exact I/O and reference clock buffers each power
supply provides power for Added Overshoot/Undershoot definition to Table 6-1 Absolute Maximum Ratings Fixed typo in Table 2-1 under the 1.2 GHz space, “1.2 V, 1.8 V, and 3.3 V” now correctly reads “1.1 V, 1.8 V, and 3.3 V” Fixed typo for the McBSP timing parameters. “P = 1/CORECLK” now correctly reads “P = 1/SYSREFCLK” Fixed typo in 7.3.1 Power-Supply Sequencing -The SPRAAG5 reference now correctly references SPRAAV7 SPRS582 Initial version Release History 2009 Texas Instruments Incorporated TMS320C6457
Communications Infrastructure Digital Signal Processor
SPRS582B—July 2010 www.ti.com Contents
1 TMS320C6457 Features .11
1.1 TMS320C6457CMH/GMH BGA Package (Bottom View) .12
1.2 Description .12
1.3 Functional Block Diagram .14 2 Device Overview .15
2.1
2.2
2.3
2.4
2.5 …
