CXA1782CQ/CR
4. $3X
These commands control the balance and gain control circuit switches used during automatic tracking
adjustment.
In the initial resetting state, BAL1 to BAL3 switches are OFF and TOG1 to TOG3 switches are ON.
• Balance adjustment
The balance adjustment switches BAL1 to BAL3 can be controlled by setting D3 = 0. The switches are set
using D0 to D2.
At this time, the balance adjustment LPF comparator output is selected at the SENS pin.
Data is set by specifying switch conditions D0 to D2 and sending a latch pulse with D3 = 0.
Sending a latch pulse with D3 = 1 does not change the balance switch settings.
START
C. OUT
Is the frequency
high enough ?
BAL1 to BAL3
Switch Control
NO
YES
SENS output
Balance OK ?
Adjustment Completed
Balance adjustment
• Gain adjustment
The gain adjustment switches TOG1 to TOG3 can be controlled by setting D3 = 1. These switches are set
using D0 to D2. At this time, the balance adjustment HPF comparator output is selected for SENS pin.
In a fashion similar to the method used with the balance adjustment, set the data by sending a latch pulse
with D3 = 1, specifying the switch conditions D0 to D2.
START
TOG1 to TOG3
Switch control
SENS
GAIN OK ?
NO
YES
Adjustment Completed
Gain adjustment
– 26 –
ETC [ ETC ]
