peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 361

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

6.11
Depending on the speed (price) of the connected external memory (SRAM) the following
maximal DSP frequency and thus DSP performance (number of MIPS) is possible;
estimation:
SRAM Access Time
33.5 ns
22 ns
16.8 ns
13.8 ns
10.5 ns
8.5 ns
1)
2)
3)
4)
Refer also to External Data Read Access Timing, Table 7-24.
Semiconductor Group
SRAM access time is the time from valid read address to the valid data.
The DOC provides 20.48 MHz
The DOC provides 30.72 MHz
The highest DSP frequency of 40 MHz (and all above recommended max. DSP frequencies can only be
confirmed after DOC characterization).
DSP Frequency Recommendation
1)
Max. DSP Frequency
20 MHz
26 MHz
30 MHz
33 MHz
37 MHz
40 MHz
4)
6-11
Note
DOC requires an ext. quartz
DOC requires an ext. quartz
3)
DOC requires an ext. quartz
DOC requires an ext. quartz
DOC requires an ext. quartz
Applications
PEB 20560
2)
3)
2003-08