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IDT79R3041-20JG8
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P34
28
IDT79R3041 INTEGRATED RISController FOR LOW COST SYSTEMS
COMMERCIAL TEMPERATURE RANGE
SysClk
Wr
A/D(31:0)
ALE
Addr(3:0)
Addr
Ack
'nnnn'
Last
Start
Write
Extended
Address
New
Transaction
Ack
t
7
t
14
t
8
t
9
t
1
t
2
t
19
t
15
t
14
'nnnn+1'
t
1
t
16
Ack
t
16
ExtDataEn
t
49
t
48
WrNear
t
7
MemStrobe
IOStrobe
t
50
t
47
t
51
t
50
t
2
t
7b
t
16
'nnnn+2'
t
16
t
50
t
1
t
2
Ack
t
51
Byte N
t
19
t
19
Byte N+1
Byte N+2
Negate
Write
t
15
t
51
t
15
t
52
t
52
t
7a
2905 drw 23
Figure 18. Tri-Byte Mini-burst Write to 8-bit Port
29
IDT79R3041 INTEGRATED RISController FOR LOW COST SYSTEMS
COMMERCIAL TEMPERATURE RANGE
SysClk
BusReq
BusGnt
A/D(31:0)
Addr(3:0)
Diag
Rd
Wr
ALE
Burst/
WrNear
t
1
t
2
t
5
t
3
Last,
BE16(1:0),
MemStrobe
IOStrobe
t
45
ExtDataEn
TC
2905 drw 24
Figure 19. Request and Relinquish of R3041 Bus to External Master
30
IDT79R3041 INTEGRATED RISController FOR LOW COST SYSTEMS
COMMERCIAL TEMPERATURE RANGE
SysClk
BusReq
BusGnt
A/D(31:0)
Addr(3:0)
Diag
Rd
Wr
ALE
Burst/
WrNear
t
1
t
2
t
6
t
4
Last,
BE16(1:0)
MemStrobe
IOStrobe
TC
ExtDataEn
t
46
2905 drw 25
Figure 20. R3041 Regaining Bus Mastership
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P34
IDT79R3041-20JG8
Mfr. #:
Buy IDT79R3041-20JG8
Manufacturer:
Description:
IC MPU MIPS-I 20MHZ 84PLCC
Lifecycle:
New from this manufacturer.
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