Feature Integration Technology Inc.
Fintek
F15353
seconds.
0
1
Slow/fast Adjustment
Every 20 seconds
3.052ppm
Every 60 seconds
1.017ppm
Minimum Resolution
Correction Range
-195.3 to +195.3ppm
-65.1 to +64.1ppm
6.7.2 Current Oscillator Frequency < Target Frequency
Re gister _ value =
⎡
⎢
Current _ oscillator _ frequency ⎤
⎛
⎞
⎜
⎜
⎟
−
⎥
⎥
⎥
⎥
⎟
actual _ measurement _ value
(Minimum _ resolution)
(T arget _ oscillatoin _ frequency)
⎝
⎠
⎢
Integral _ value
⎢
⎢
(Current _ oscillation _ frequency)×
⎢
⎥
⎦
⎣
Caution: The figure range which can be corrected is that the calculated value is from 0 to 62.
6.8 I2C Interface Function
The F15353 receives various commands via an I2C interface to read/write data.
6.8.1 Start Condition
The start condition is established at the point where the SDA line changes from “H” to “L” when the SCL line is “H”
level. All operations start with the start condition.
6.8.2 Stop Condition
The stop condition is established at the point where the SDA line changes from “L” to “H” when the SCL line is
“H” level. If the stop condition is received during a readout sequence, the read operation is discontinued and the
device enters the standby mode.
6.8.3 Data Transfer
Data transfer is performed by changing the SDA line during the period that the SCL line is “L”. If the SDA line
changes during the period and the SCL line is “H”, it is recognized as the start or stop condition.
6.8.4 Acknowledge
Data is transferred 8 bits in a row. Subsequently, in the 9th clock cycle period, the device on the system bus
that is receiving the data changes the SDA line to “L” and returns the acknowledge signal to acknowledge data
V0.12P
20
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
