Cache control
Memory protect
Bandwidth Mgmt
L1P
256
Instruction fetch
Register
file A
Register
file B
C674x
Fixed/floating point CPU
64
64
Cache control
Memory protect
Bandwidth Mgmt
L1D
Cache control
Memory protect
Bandwidth Mgmt
L2
CFG
MDMA
SDMA
EMC
256
IDMA
256
Power down
Interrupt
Controller
256
256
256
256
8x32
32K bytes
L1D RAM/
cache
High performance
switch fabric
64
64
64
64
Configuration
peripherals
bus
32
32K bytes
L1P RAM/
cache
256
256K bytes
L2 RAM
Preliminary
C674x DSP Subsystem
www.ti.com
Figure 1-7. TMS320C674x Megamodule Block Diagram
1.3.2 Key Features
The main features of the DSP subsystem are:
•
32-bit fixed-point media processor
•
VLIW architecture based on programmable enhanced version of the C64x DSP core
•
Coprocessor connection through the coprocessor hardware Interface
•
Four instructions per cycle, four execution units:
–
Optimized instruction set for video and image processing
–
Four 8 × 8 or 16 × 16 multiply accumulate (MAC) per cycle
–
Four slave synchronous die (SAD) per cycle
–
Eight interpolations (a + b + 1) >>1 per cycle
–
Two (32-bit x 32-bit -> 64-bit) multiply operations per cycle
•
Low-power processor and megamodule:
–
Dynamically mixed 32-bit and 16-bit instruction sets
–
Separate power domain
–
Supported multiple power-down states
•
2-level memory subsystem hierarchy:
–
L1 (program and data): 32-KB 4-way set associative cache-32-byte cache line
–
L2 (program and data): 128-KB 8-way set associative cache-32-byte cache line
110
Chip Level Resources
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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