I2Cx_SMB field descriptions (continued)
Field Description
1
SHTF2
SCL High Timeout Flag 2
This bit sets when SCL is held high and SDA is held low more than clock × LoValue / 512. Software clears
this bit by writing 1 to it.
0 No SCL high and SDA low timeout occurs
1 SCL high and SDA low timeout occurs
0
SHTF2IE
SHTF2 Interrupt Enable
Enables SCL high and SDA low timeout interrupt.
0 SHTF2 interrupt is disabled
1 SHTF2 interrupt is enabled
46.3.10 I2C Address Register 2 (I2Cx_A2)
Address: Base address + 9h offset
Bit 7 6 5 4 3 2 1 0
Read
SAD
0
Write
Reset
1 1 0 0 0 0 1 0
I2Cx_A2 field descriptions
Field Description
7–1
SAD
SMBus Address
Contains the slave address used by the SMBus. This field is used on the device default address or other
related addresses.
0
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
46.3.11 I2C SCL Low Timeout Register High (I2Cx_SLTH)
Address: Base address + Ah offset
Bit 7 6 5 4 3 2 1 0
Read
SSLT[15:8]
Write
Reset
0 0 0 0 0 0 0 0
I2Cx_SLTH field descriptions
Field Description
SSLT[15:8] SSLT[15:8]
Most significant byte of SCL low timeout value that determines the timeout period of SCL low.
Chapter 46 Inter-Integrated Circuit (I2C)
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 1195
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