I2C Registers
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Table 21-33. I2C_SYSTEST Register Field Descriptions (continued)
Bit Field Type Reset Description
0 SDA_O R 0h SDA line drive output value.
In normal functional mode (ST_EN = 0), this bit is don't care.
It reads as 0 and a write is ignored.
In system test mode (ST_EN = 1 and TMODE = 11), a 0 forces a
low level on the SDA line and a 1 puts the I2C output driver to a
high-impedance state.
Value after reset is low.
0x0 = Write 0 to SDA line
0x1 = Write 1 to SDA line
3760
I2C SPRUH73H–October 2011–Revised April 2013
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