M66335FP Datasheet, PDF (29/59 Pages) Mitsubishi Electric Semiconductor – FACSIMILE IMAGE DATA PROCESSOR

M66335FP
Uniformity correction data can be written to and read from SRAM for uniformity correction built in the M66335
through the MPU bus. With this operation, the uniformity data can be temporarily saved in the backup memory when
the power is off. The sequences of writing and reading uniformity correction data are shown below.
Writing to the uniformity correction memory (MPU → M66335)
Initial setting (1)
Initial setting (2) Memory address (0) Memory address (1)
CSB
A4 to A0
00H
01H
19H
19H
WRB
D7 to D0
(Input)
D1
1
D0 = "1"
2
Reading from the uniformity correction memory (M66335 → MPU)
DATA (0)
3
DATA (1)
3
Initial setting (1)
Initial setting (2) Memory address (0) Memory address (1)
CSB
A4 to A0
00H
01H
19H
19H
WRB
D7 to D0
(Input)
D1
RDB
D7 to D0
(Output)
1
D0 = "1"
2
DATA (0)
4
DATA (1)
4
1. "0" (black correction) or "1" (white correction) is set in D1 (Umode) of the register 00.
2. D0 (CNTRST) of the register 01 is set at "1" to reset the address counter of the uniformity correction memory.
3. UNIF_D is selected in the register 19, and DATA (0) of the MPU bus (D5 to D0) is written in the memory. The
address counter of the uniformity correction memory is incremented at the edge of the first transition of WRB. (For
writing)
4. UNIF_D is selected in the register 19, and DATA (0) of the uniformity correction memory is read into the MPU bus
(D5 to D0). The address counter of the uniformity correction memory is incremented at the edge of the first
transition of RDB. (For reading)
REJ03F0276-0200 Rev.2.00 Jun 16, 2008
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