idt49c460cjb Integrated Device Technology, idt49c460cjb Datasheet - Page 30

• Manufacturer Part Number: idt49c460cjb
• Description: 32-bit Cmos Error Detection And Correction Unit
• Manufacturer: Integrated Device Technology

IDT49C460/A/B/C/D/E
32-BIT CMOS ERROR DETECTION AND CORRECTION UNIT
GENERATE MODE (FROM DETECT OR CORRECTION MODE)
NOTES:
1. BOLD indicates critical parameters.
2. Valiid "DATA" and valid CB
3. This is "E" version timing spec. Check appropriate table for other speed versions.
* Assumes DATA bus becomes input 4ns before LE
LE
ERR/MERR
CORRECT
DATA Bus
OUT
OE byte
SC
OE
/
CB
LE
GEN
OUT
SC
IN
IN
(Output)
(CODE ID 1,0 = 10)
CODE ID 1,0 = 10
IN
" are shown to occur simultaneously, since both buses are latched and opened by the "LE
6
0
6
0
IN
goes high.
16*
11
9
Valid Checkbits In
Valid DATA
7
13
10
(Generate Mode)
0
IN
7
7
Valid Checkbits
11.6
0
OUT
MILITARY AND COMMERCIAL TEMPERATURE RANGES
OE byte
OE byte
OE byte
OE byte
CB
LE
ERROR
LE
DATA
*LE
CB
OE
OE
OE
OE
(Forced High)
(Check Bits Exit)
(Don't Care)
OUT
OUT
IN
IN
SC
SC
SC
SC
IN
to DATA
to SC
= High to SC
= High to SC
= High to SC
= Low to SC
= Low to SC
IN
/
/
GENERATE
GENERATE
From
= High
= High to DATA
= High to DATA
= Low to DATA
= Low to DATA
to SC
Propagation Delay
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
= Low to
= Low to SC
*
Enabled
Enabled
Disabled
Disabled
OUT
OUT
OUT
OUT
IN
To
" input.
Enabled
Enabled
Disabled
Disabled
OUT
Min./Max.
Min.
Max.
Min.
Max.
Max.
Max.
Max.
Max.
Max.
Max.
Min.
Max.
Min.
Max.
2584 drw 09
30