M67025E 데이터 시트보기 (PDF) - Atmel Corporation
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M67025E Datasheet PDF : 27 Pages
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Table 3. Interrupt Flag(1) (4)
Left Port
Right Port
R/WL CSL
L
L
OEL
X
AOL-A12L
1FFF
INTL
X
R/WR
X
CSR
X
OER
X
AOR-A12R
X
X
X
X
X
X
X
X
L
L
X
X
1FFE
X
X
L
L
L(3)
L
L
X
H(2)
X
X
X
1FFF
1FFE
X
Notes:
1. Assumes BUSYL = BUSYR = H.
2. If BUSYL = L, then NC.
3. If BUSYR = L, then NC.
4. H = HIGH, L = LOW, X = DON’T CARE, NC = NO CHANGE.
INTR
L(2)
H(3)
X
X
Function
Set Right INTR Flag
Reset Right INTR Flag
Set Left INTL Flag
Reset Left INTL Flag
Table 4. Arbitration(2)
Left Port
Right Port
Flags (1)
CSL
H
A0L – A12L
X
CSR
H
A0R – A12R
X
BUSYL
H
BUSYR
H
L
Any
H
X
H
H
H
X
L
Any
H
H
L
≠ A0R – A12R
L
≠ A0L – A12L
H
H
Address Arbitration With CS Low Before Address Match
L
LV5R
L
LV5R
H
L
L
RV5L
L
RV5L
L
H
L
Same
L
Same
H
L
L
Same
L
Same
L
H
CS Arbitration With Address Match Before CS
LL5R
= A0R – A12R
LL5R
= A0L – A12L
H
L
RL5L
= A0R – A12R
RL5L
= A0L – A12L
L
H
LW5R
= A0R – A12R
LW5R
= A0L – A12L
H
L
LW5R
= A0R – A12R
LW5R
= A0L – A12L
L
H
Notes:
1. INT Flags Don’t Care.
2. X = DON’T CARE, L = LOW, H = HIGH.
LV5R = Left Address Valid ≥ 5 ns before right address.
RV5L = Right Address Valid ≥ 5 ns before left address
Same = Left and Right Addresses match within 5 ns of each other.
LL5R = Left CS = LOW ≥ 5 ns before Right CS.
RL5L = Right CS = LOW ≥ 5 ns before left CS.
LW5R = Left and Right CS = LOW within 5 ns of each other.
Function
No Contention
No Contention
No Contention
No Contention
L-Port Wins
R-Port Wins
Arbitration Resolved
Arbitration Resolved
L-Port Wins
R-Port Wins
Arbitration Resolved
Arbitration Resolved
9 M67025E
4146J–AERO–06/03
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