idt49c465apqfb Integrated Device Technology, idt49c465apqfb Datasheet - Page 35

• Manufacturer Part Number: idt49c465apqfb
• Description: 32-bit Flow-thru Error Detection Correction Unit
• Manufacturer: Integrated Device Technology

IDT49C465/A
32-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT
AC TIMING DIAGRAMS — 64-BIT CONFIGURATION
NOTE:
1. Assumes that System Data is valid at least 3ns (Com.) before SLE goes HIGH.
2. Assumes that Memory Data is valid at least 4ns (Com.) before MLE goes HIGH.
MD Bus
SD Bus
CBOE
SINGLE
MOE
CBO
SOE
MLE
SLE
465
(SOE = Tied high)
(MOE = Tied high)
to
to
t CECZx
1
1
Valid DATA
Valid DATA
t MMLS
t SSLS
t MLC
t SLC
t SC
t MC
(2)
(1)
2
t MMLH
2
t SSLH
Figure 14. 64-Bit Single Chip "Generate Only" Timing
IN
IN
3
3
Final Checkbits Out
4
4
11.7
5
5
Parameter
t SSLS
t SSLH
t SLC
t MMLS
t MMLH
t SC
t MC
t MLC
t CECZx
Name
MILITARY AND COMMERCIAL TEMPERATURE RANGES
(1)
(2)
SD
SD
SLE = High to CBO
MD
MD
Bits 32–63 to CBO
Bits 0–31 to CBO
MLE
CBOE = Low to CBO Enabled
From
IN
IN
IN
IN
IN
Set-up to SLE
Hold to SLE
Set-up to MLE
Hold to MLE
Propagation Delay
= High to CBO
IN
IN
IN
= Low
(1)
IN
= Low
= Low
(2)
= Low
To
2552 drw 26
Min./
Max.
min.
min.
max.
min.
min.
max.
max.
max.
max.
35