|
Feature
|
Analog Devices
21060 (40 MHz) |
Texas Instruments
'C6701 (167 MHz) |
| Performance (MFLOPS) |
|
|
| Peak |
120 |
1 GFLOP |
| Sustained |
80 |
500 to 700 (Spectrum estimate) |
Bandwidth: register file to
internal memory |
64 bits/cycle |
256 bits/cycle |
| Bandwidth: external memory |
240 Mbytes/s |
666.7 Mbytes/s |
| I/O bandwidth: total |
560 Mbytes/s |
~400 Mbytes/s |
| Interrupt latency |
4 by 25 ns cycles |
11 by 6 ns cycles |
| Core features |
|
|
| Number of registers |
128 |
32 |
| Extended floating-point support |
40-bit extended precision |
64-bit double precision |
| Peripheral features |
|
|
| Internal memory size |
4 Mbit (2 by 2 Mbit) |
1 Mbit (2 by 512 kbit) |
| Program memory structure |
Configurable
48-bit instructions |
16 k by 32
2 k by 256 bit instructions |
| Data memory structure |
Configurable:
16-, 32-, or 40-bit |
16 k by 32
8/16/32/40/64-bit data |
| Cache |
32 instructions
(if selected) |
Entire internal program
memory (if selected) |
| DMA channels |
10 |
4 + 1 (HPI) |
| I/O capability |
|
|
| Primary external data interface |
48 bits at 40 MHz |
32 bits at 166.7 MHz |
| Serial ports |
Two at 40 Mbit/s |
Two at 83.4 Mbit/s |
| Other ports |
6 by link ports at 40 Mbytes/s |
Slave host port at clock/4
(41.5 Mbytes/s) |
| Inherent multiprocessing support |
Cluster and link ports |
None |