T4260-ILSH Atmel, T4260-ILSH Datasheet - Page 18

• Manufacturer Part Number: T4260-ILSH
• Description: IC AM/FM FRONT END W/PLL 44SSOP
• Manufacturer: Atmel

Specifications of T4260-ILSH

• Frequency: AM, FM
• Modulation Or Protocol: AM, FM
• Applications: AM/FM Radio Receiver
• Current - Receiving: 85mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 8 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -

10.10 2-bit Shift
10.11 SW1 (Pin 13)
18
T4260
A divider 2-bit shift (bit 32 = 0) allows faster frequency changes by using a four times higher step
frequency (e.g., f
quency change), the normal step frequency (e.g., f
If no 2-bit shift is used (bit 32 = 1), the frequency changes will be done with the normal step fre-
quency (12.5 kHz).
In 2-bit shift mode the N- and R-divider are shifted by two bits to the right (this corresponds by a
R- and N-divider division by 4). An important condition for this mode is that the R-divider has to
be a multiple of 4.
Table 10-13. Manual and Lock Detect Shift Mode
The switching output SW1 (pin 13) is controlled by bit 46 as given in
Table 10-14. Switching Output
Note:
Figure 10-1. Internal Components at SW1
SW1 is an open-drain output.
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Dividers 2-bit shift
= 50 kHz instead of f
SW1
High
2-bit Shift
Low
No shift
SW1
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= 12.5 kHz). If the PLL is locked (after the fre-
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= 12.5 kHz) will be active again.
Table
B46
0
1
B32
0
1
10-14.
4528N–AUDR–11/09