TDA5230XT Infineon Technologies, TDA5230XT Datasheet - Page 29

• Manufacturer Part Number: TDA5230XT
• Manufacturer: Infineon Technologies

Specifications of TDA5230XT

• Operating Temperature (min): -40C
• Operating Temperature (max): 105C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 4.4mm
• Product Length (mm): 9.7mm
• Lead Free Status / Rohs Status: Compliant

CMC1:
ADDR:
XTALCAL0:
ADDR:
XTALCAL1:
ADDR:
2.4.3.2
The chip provides a programmable clock signal at the CLKOUT/RXD pin that is derived
from the internal system clock. To save power, this unit can be disabled by the SFR
CLKOUTEN bit. The Clock Generation Unit divides the internal clock by an adjustable
factor down to the desired CLKOUT frequency. The 20-bit wide division factor, stored in
the CLOCKOUT0, CLOCKOUT1 and CLOCKOUT2 registers, allows a CLKOUT-
frequency to be generated down to approximately 10 Hz. The 1:2 divider following the
20-bit counter creates the final CLKOUT signal with 50% duty cycle.
The resulting CLKOUT frequency can be calculated by:
Data Sheet
Bit R/W Description
Bit R/W Description
Bit R/W Description
4
4
3
2
1
0
3
2
1
0
W
W
W
W
W
W
W
W
W
W
0x03
0x61
0x62
Chip Mode Control Register 1
External Clock Generation Unit
XTALTREN: XTAL Trim Enable
0: Trimming is disabled
1: Trimming is enabled
XTAL_SW_COARSE_4: Connect trim capacitor: 16 pF
XTAL_SW_COARSE_3: Connect trim capacitor: 8 pF
XTAL_SW_COARSE_2: Connect trim capacitor: 4 pF
XTAL_SW_COARSE_1: Connect trim capacitor: 2 pF
XTAL_SW_COARSE_0: Connect trim capacitor: 1 pF
XTAL_SW_FINE_3: Connect trim capacitor: 500 fF
XTAL_SW_FINE_2: Connect trim capacitor: 250 fF
XTAL_SW_FINE_1: Connect trim capacitor: 125 fF
XTAL_SW_FINE_0: Connect trim capacitor: 62.5 fF
Trim XTAL frequency, coarse
Trim XTAL frequency, fine
25
Functional Description
Reset Value: 0x10
Reset Value: 0x00
Reset Value: 0x00
Version 4.0, 2007-06-01
TDA523x