Kortek corporation
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PDP R&D Center
(2) Descriptions of Block
’
s Functions
Writes data grouped by sub-field weight in the memory, receives SF_ID and reads data from the memory for
re-arrangement and then outputs data to the block.
● SGRAM Initial Block
Conducts initialization for powering on initially and operating SGRAM normally, in accordance with
processes.
In performing the initialization function including powering on, highest priority is given to this function
’
s
sequence.
● WRITE ADDRESS GEN Block
Writes data outputted from the SUBFIELD MATRIX in the memory, based on RE_H_SYNC_MEM,
RE_V_SYNC_MEM outputted from the SYNC ADJUST block.
In writing in the memory, the unit block has a structure allowing for writing 12 sub-fields.
● READ ADDRESS GEN Block
Reads data stored in SGRAM, by receiving SF_ID signals from the RE_ARRANGE block.
The READ function has a structure into which the efficiency of the RE_ARRANGE block is incorporated at
a maximum.
● Control & ADDRESS SELECT Block
Performs the MEMORY INITIAL function in 2 SGRAMs, first of all.
After the INITIAL function, applies the WRITE and READ functions alternately, which are operating as a
unit block function, to 2 SGRAMs based on V_TOGGLE signals, so that WRITE, READ CONTROL &
ADDRESS can be outputted.
● TRI_BUFFER Block
Controls data bus Lines according to the WRITE and READ functions applied alternately to 2 SGRAMs
based on V_TOGGLE signals.
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