GE VAT2000 Series

3. Parallel Data Input
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3-2. Data input mode selection and signal specifications
The following three methods can be used for the parallel input data input method.
1) 16-bit with strobe
2) 8-bit multiplexed with strobe
3) 16-bit sample
These methods are selected with parameter No. C32-0.
(1) 16-bit with strobe (C32-0 = 1)
The 16-bit data (D0 to 15) is loaded with the rising edge of the strobe (STB).
D0~D15
STB
OFF
ON
Data 0 Data 1 Data 2
ts th
tcy
Data 0 Data 1
tw
tds
Internal data
Fig. 3-2 16-bit with strobe time chart
(2) 8-bit multiplexed with strobe (C32-0 = 2)
The 16-bit data is divided into the low-order 8-bit and high-order 8-bit with the LSB signal, and
each is loaded with the rising edge of the strobe (STB).
D0~D7
STB
OFF
ON
Data 0 (high-order) Data 1 (low-order) Data 2 (high-order)
ts th
tcy
Data 0 Data 1
tw
tds
Internal data
LSB
OFF
ON
Fig. 3-3 8-bit multiplexed with strobe time chart