TMS320VC549_06 Datasheet, PDF (2/63 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSOR

TMS320VC549
FIXEDĆPOINT DIGITAL SIGNAL PROCESSOR
SPRS078G − SEPTEMBER 1998 − REVISED OCTOBER 2004
Table of Contents
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . 12
Recommended Operating Conditions . . . . . . . . . . . 12
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . 13
Parameter Measurement Information . . . . . . . . . . . . 14
Timing Parameter Symbology . . . . . . . . . . . . . . . . . . 14
Signal Transition Reference Points . . . . . . . . . . . . . . 14
Internal Oscillator With External Crystal . . . . . . . . . 15
Divide-By-Two/Divide-By-Four Clock Option . . . . . 16
Multiply-By-N Clock Option . . . . . . . . . . . . . . . . . . . . 18
Memory and Parallel I/O Interface Timing . . . . . . . . 20
SPICE Simulation Results . . . . . . . . . . . . . . . . . . . . . 28
Ready Timing for Externally Generated Wait States 31
HOLD and HOLDA Timing . . . . . . . . . . . . . . . . . . . . . 36
Reset, BIO, Interrupt, and MP/MC Timings . . . . . . . 38
Serial Port Receive Timing . . . . . . . . . . . . . . . . . . . . . 42
Buffered Serial Port Receive Timing . . . . . . . . . . . . . 45
Serial-Port Receive Timing in TDM Mode . . . . . . . . 49
Host-Port Interface Timing . . . . . . . . . . . . . . . . . . . . . 53
Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
REVISION HISTORY
This data sheet revision history highlights the technical changes made to the SPRS078F device-specific data
sheet to make it an SPRS078G revision.
Scope: Applicable updates to the C5x device family, specifically relating to the C549 device, have been incorpo-
rated. Updated the device-specific information supporting the VC549, 8.3-ns, 120 MIPS device, which is now in
the production data (PD) state of development.
PAGE(S)
NO.
ADDITIONS/CHANGES/DELETIONS
1
Features:
Deleted “(Product Preview Data)” from the “8.3-ns Single-Cycle Fixed-Point Instruction Execution Time (120 MIPS) for 3.3-V
Power Supply (2.5-V Core)” feature
Deleted NOTE about data for the 8.3-ns, 120 MIPS device being Product Preview data
11
’549 Signal Descriptions table, IEEE1149.1 TEST PINS:
Added “This pin should be pulled high with a separate 4.7-kΩ resistor” to the EMU0 pin DESCRIPTION
Added “This pin should be pulled high with a separate 4.7-kΩ resistor” to the EMU1/OFF pin DESCRIPTION
13
Electrical Characteristics Over Recommended Operating Case Temperature Range table:
IDD, Supply current, standby, IDLE3 (VC549-120 only):
Deleted the TYP value of “170” µA
Added the TYP value of “5” mA for “25°C” TEST CONDITIONS
Added the TYP value of “50” mA for “100°C” TEST CONDITIONS
42
Serial Port Receive Timing section:
Timing Requirements Over Recommended Operating Conditions for Serial Port Receive table:
Changed the MIN value of “th(FSR), Hold time, FSR after CLKR falling edge” from “4” to “6” ns
Changed the MIN value of “tsu(DR), Setup time, DR before CLKR falling edge” from “6” to “4” ns
59
Mechanical Data section:
Deleted the “PGE (S−PQFP−G144)” and GGU “(S−PBGA−N144)” mechanical data package diagrams; now an automated
merge process
Added lead-in sentences for the thermal resistance characteristics table(s) and the “merged” mechanical data packages
2
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