ADSP-2192M
Sub-ISA Interface Read/Write Cycle Timing
Table 36, Figure 14, and Figure 15 describe Sub-ISA Interface
Read and Write operations.
Table 36. Sub-ISA Interface Read/Write Cycle Timing
Parameter |
|
|
|
|
|
|
|
|
|
|
|
|
Min |
Max |
Unit |
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
tISTW |
IOR/IOW Strobe Width |
|
|
|
|
|
|
|
|
|
|
|
100 |
|
|
|
ns |
||||||||
tICYC |
IOR/IOW Cycle Time |
|
|
|
|
|
|
|
|
|
|
|
240 |
|
|
|
ns |
||||||||
tAESU |
AEN Setup to IOR/IOW Falling |
|
|
|
|
|
|
|
|
|
|
|
10 |
|
|
|
ns |
||||||||
tAEHD |
AEN Hold from IOR/IOW Rising |
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
ns |
||||||||
tADSU |
Address Setup to IOR/IOW Falling |
|
|
|
|
|
|
|
|
|
|
|
10 |
|
|
|
ns |
||||||||
tADHD |
Address Hold from IOR/IOW Rising |
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
ns |
||||||||
tDHD1 |
Data Hold from IOR Rising |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20 |
ns |
|||||||
tDHD2 |
Data Hold from IOW Rising |
|
|
|
|
|
|
|
|
|
|
|
15 |
|
|
|
ns |
||||||||
tRDDV |
IOR Falling to Valid Read Data |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
40 |
ns |
|||||||
tWDSU |
Write Data Setup to IOW Rising |
|
|
|
|
|
|
|
|
|
|
|
10 |
|
|
|
ns |
||||||||
tRDY1 |
IOR/IOW Rising from IOCHRDY Rising |
|
|
|
|
|
|
|
|
0 |
|
|
|
ns |
|||||||||||
tRDY2 |
IOCHRDY Falling from IOR/IOW Rising |
|
|
|
|
|
|
|
|
20 |
|
|
|
ns |
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
AEN |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
tAEHD |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
tAESU |
|
|
|
|
tRDY1 |
|
|
|
|
|
|
|
|
tRDY2 |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
IOCHRDY |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
tICYC |
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
IOR |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
tISTW
tRDDV |
|
|
|
tDHD1 |
|
|
ISAD15–0
tADSU |
|
|
|
|
|
tADHD |
|
|
|
|
|
ISAA3–1
Figure 14. Sub-ISA Interface Read Cycle Timing
–32– |
REV. 0 |
ADSP-2192M
AEN
tAEHD
tAESU |
|
tRDY1 |
|
|
|
tRDY2 |
|
|
|
|
IOCHRDY
tICYC
IOW
tSTW
tWDSU |
|
|
|
tDHD2 |
|
|
ISAD15–0
tADSU |
|
|
|
|
|
tADHD |
|
|
|
|
|
ISAA3–1
Figure 15. Sub-ISA Interface Write Cycle Timing
REV. 0 |
–33– |