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| BUF22821 Datasheet, PDF (14/25 Pages) Texas Instruments – Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory | |||
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BUF22821
SBOS399 â JUNE 2007
has been issued, no communication with the
BUF22821 should take place for at least 250µs.
Writing or reading over the serial interface while the
nonvolatile memory is being written jeopardizes the
integrity of the data being stored.
Read: Nonvolatile Memory for the DAC Register
To read the data present in nonvolatile register for a
particular DAC/VCOM channel, the master must first
issue a general-acquire command, or a
single-acquire command with the appropriate
DAC/VCOM channel chosen. This action updates both
the DAC/VCOM register(s) and DAC/VCOM output
voltage(s). The master may then read from the
appropriate DAC/VCOM register as described earlier.
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Table 4. Other Register Pointer Addresses
REGISTER
Die_Rev
Die_ID
MaxBank
POINTER ADDRESS
111100
111101
111111
Table 5. DAC Register Pointer Addresses
REGISTER
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
OUT16
OUT17
OUT18
VCOM1
VCOM2
OUT19
OUT20
OUT21
OUT22
POINTER ADDRESS
000000
000001
000010
000011
000100
000101
000110
000111
001000
001001
001010
001011
001100
001101
001110
001111
010000
010001
010010
010011
010100
010101
010110
010111
14
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