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SLG46824 Datasheet(PDF) 96 Page - Dialog Semiconductor

Part No. SLG46824
Description  GreenPAK Programmable Mixed Signal Matrix with In System
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Maker  DIALOG [Dialog Semiconductor]
Homepage  http://www.dialog-semiconductor.com/
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SLG46824 Datasheet(HTML) 96 Page - Dialog Semiconductor

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Datasheet
31-Jan-2018
CFR0011-120-01
Revision 2.3
96 of 152
© 2018 Dialog Semiconductor
SLG46824
GreenPAK Programmable Mixed Signal Matrix with In System
Programmability
PRELIMINARY
Each of these pins can be used as an I2C Expander output or used as a normal pin. Also each of these four expander outputs
have initial state settings which are specified in reg <1599:1592>.
15.5.5 I2C Byte Write Bit Masking
The I2C macrocell inside SLG46824 supports masking of individual bits within a byte that is written to the RAM memory space.
This function is supported across the entire RAM memory space. To implement this function, the user performs a Byte Write
Command (see Section 15.4.1 for details) on the I2C Byte Write Mask Register (address 0C9H) with the desired bit mask pattern.
This sets a bit mask pattern for the target memory location that will take effect on the next Byte Write Command to this register
byte. Any bit in the mask that is set to “1” in the I2C Byte Write Mask Register will mask the effect of changing that particular bit
in the target register, during the next Byte Write Command. The contents of the I2C Byte Write Mask Register are reset (set to
00h) after valid Byte Write Command. If the next command received by the device is not a Byte Write Command, the effect of the
bit masking function will be aborted, and the I2C Byte Write Mask Register will be reset with no effect. Figure 68 shows an example
of this function.
Figure 68: Example of I2C Byte Write Bit Masking


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