uaa2062 NXP Semiconductors, uaa2062 Datasheet - Page 21

• Manufacturer Part Number: uaa2062
• Description: Analog Cordless Telephone Ic
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FM PLL
This programming enables to shift the centre frequency of the VCO, within the FM PLL, in order to align the frequency
as close as possible to the 2nd IF frequency (nominal frequency 455 kHz).
Table 16 FM PLL centre frequency shift selection
C
The clock output signal CLKO is derived from the local oscillator LO2 and can be used to drive a microcontroller. The
LO2 signal is divided with a programmable divider value. The divider is followed by a filter that controls the slew rate of
the signal in order to avoid radiation noise on the PCB. The CLKO output also has the option to disable the output signal.
The default value is step 1 (01).
Table 17 Clock divider ratio selection
2000 Aug 10
LOCK DIVIDER RATIO SELECTION
Analog cordless telephone IC
BIT 3
CENTRE FREQUENCY SHIFT SELECTION
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
BIT 1
0
0
1
BIT 2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
BIT 0
0
1
0
BIT 1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
21
BIT 0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
STEP
0
1
2
STEP
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
CLOCK DIVIDER RATIO
output disabled
Product specification
UAA2062
FREQUENCY
2.5
SHIFT (kHz)
80
CENTRE
+110
+132
+154
+176
+22
+44
+66
+88
154
132
110
88
66
44
22
0