S0 | S1 | nA0 | nA1 | nA2 | nA3 | nE# | nY | ||
---|---|---|---|---|---|---|---|---|---|
X | X | X | X | X | X | H | L | ||
L | L | L | X | X | X | L | L | ||
L | L | H | X | X | X | L | H | ||
H | L | X | X | X | X | L | L | ||
H | L | X | L | X | X | L | H | ||
L | H | X | H | L | X | L | L | ||
L | H | X | X | H | X | L | H | ||
H | H | X | X | X | L | L | L | ||
H | H | X | X | X | H | L | H |
L
: low voltageH
: high voltageX
: don’t care