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G-LINK Technology
GLT41116
July 1998 (Rev. 1)
CLK
CKE
CE
R/Wn
Don’t Care
Figure 3. NOP, STALL and DESELECT Timing
ADV/LD
BWn
ADDRESS
D/Q
A1
A2
A3
A4
A5
12
34
56789
10
Q (A2)
D (A1)
Undefined
tKHQZ
tKHQX
WRITE D(A1)
READ Q(A2)
STALL
READ Q(A1)
WRITE D(A2)
STALL
NOP
READ Q(A3)
DESELECT
Continue
DESELECT
D (A5)
NOTE:
1. The IGNORE CLOCK EDGE or STALL cycle (clock 3) illustrates CKE being used to create a “pause.” A WRITE is not performed during this cycle.
2. For this waveform, ZZ and OE are tied LOW.
3. CE represents three signals. When CE = 0, it represents CE = 0, CE2 = 0, CE2 = 1.
4. Data coherency is provided for all possible operations. If a READ is initiated, the most current data is used. The most recent data may be from the input data register.
Q (A3)
D (A4)