idt49c465apqfb Integrated Device Technology, idt49c465apqfb Datasheet - Page 10

• 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
OPERATING MODE CHARTS
SLICE IDENTIFICATION
SLICE POSITION CONTROL
NOTES:
1. Checkbits generated from the data in the SD Latch.
2. Corrected data residing in the Pipe Latch.
FUNCTIONAL MODE CONTROL
CODE Functional Operation
CODE ID 1 CODE ID 0
MODE
1 0
0 0
0 1
1 0
1 1
2 1 0
x 1 1
x 1 0
0 0 0
x 0 1
1 0 0
ID
0
0
1
1
Lower word, 64-bit bus
Upper word, 64-bit bus
Single 32-bit EDC unit
“64-bit Generate-only”
“Diagnostic-Output”
“Checkbit-Injection”
“Error-Data-Output”
Slice Position/
“Generate-Detect”
Functional Mode
Detect/Correct
Detect/Correct
Detect/Correct
of SD Bus
Inject Checkbits
0
1
0
1
Generate
Generate
Generate
Width =
“Normal”
Generate
Generate
Generate
Width =
Correct
Correct
Detect
32-bit Flow-Thru EDC
64-bit GENERATE Only EDC
64-bit EDC- Lower 32 bits (0-31)
64-bit EDC- Upper 32 bits (32-63)
(1)
(2)
(1)
(2)
(1)
(2)
SOE
SOE
SOE
1
0
1
1
0
1
0
SOE
Slice Definition
1
0
1
0
0
0
1
1
0
Pipe. latch
Sys. 32–63
Pipe. latch
Sys. 32–63
Pipe. latch
Sys. 0–31
Sys. 0–31
SD Bus
Syn. register
Er. type reg.
Err. D. latch
Err. counter
PCBIin bus
Pipe. latch
Pipe. latch
Pipe. latch
CPU Data
CPU Data
CBin latch
SDin latch
SD0–7 in
32
SD Bus
32
MOE
MOE
0
1
1
0
1
0
1
MOE
MOE
—
—
2552 tbl 04
0
1
0
1
0
0
1
Sys. Byte Mux
MD 32–63
MD 32–63
Sys. 0–31
MD 0–31
MD 0–31
MD 0–31
MD Bus
Pipe. latch
Pipe. latch
Pipe. latch
Pipe. latch
RAM Data
RAM Data
RAM Data
32
MD Bus
11.7
32
—
—
U-SYOout
L-CBOout
PCBI in
PCBI
PCBI
PCBI
Bus
Bus
—
—
—
—
—
—
—
—
—
—
—
—
—
8
8
MILITARY AND COMMERCIAL TEMPERATURE RANGES
L-SYOout
Checkbit Buses
Checkbit Buses
CBs in
CBs in
CB in
CB in
CB in
CB in
CBI
CBI
Bus
CBI
Bus
—
—
—
—
—
—
—
—
—
8
8
F.CBs out
PCBs out
CBs out
CBs out
CB out
CB out
CB out
Bus
CBO
CBO
CBO
Bus
—
—
—
—
—
—
—
—
—
8
8
Par.Synd P out
Par.Cbits P out
Syn. out P out
SYO
Bus
SYO
SYO
Bus
—
—
—
—
—
—
—
—
—
—
—
—
—
8
8
P out
P out
P out
Bus
Bus
P in
P in
P in
P in
P in
P in
—
—
—
—
P
P
P
4
4
PERR
PERR
active
active
active
2552 tbl 05
PERR
PERR
active
active
active
2552 tbl 06
—
—
—
—
—
—
—
—
—
—
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