tda5251f1 Infineon Technologies Corporation, tda5251f1 Datasheet - Page 55
tda5251f1
Manufacturer Part Number
tda5251f1
Description
Ask/fsk 315mhz Wireless Transceiver
Manufacturer
Infineon Technologies Corporation
Datasheet
1.TDA5251F1.pdf
(88 pages)
- Current page: 55 of 88
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The default mode is bipolar switch with no ramp function (D0 = 1, D1 = D2 = 0), which is suitable
for all bitrates.
Table 3-3
3.2.6
Case FSK-RX or ASK-TX (C tune2 ):
Table 3-4
Case FSK-TX or ASK-RX (C tune1 and C tune2 ):
Table 3-5
Preliminary Specification
D13
D12
D11
D0
D10
Bit
D5
D4
D3
D2
D1
D0
Bit
D9
D8
D5
D4
D3
D2
D1
D0
0
1
1
1
1
n.a.
D1
0
1
0
1
Finetuning and FSK modulation relevant registers
Nominal_Frequ_5
Nominal_Frequ_4
Nominal_Frequ_3
Nominal_Frequ_2
Nominal_Frequ_1
Nominal_Frequ_0
Sub Address 0EH: XTAL_CONFIG
Sub Address 02H: XTAL_TUNING
Sub Address 01H: FSK
n.a.
Function
Function
D2
0
0
1
1
FSK+3
FSK+0
FSK+5
FSK+4
FSK+2
FSK+1
FSK-5
FSK-4
FSK-3
FSK-2
FSK-1
FSK-0
bipolar (default)
Switch mode
bipolar
bipolar
bipolar
FET
Value
Value
500fF
250fF
500fF
250fF
500fF
250fF
125fF
8pF
4pF
2pF
1pF
8pF
4pF
2pF
1pF
4pF
2pF
1pF
55
Ramp time
< 0.2 ms
< 0.2 ms
12 ms
4 ms
8 ms
Description
Description
shift: +FSK
or ASK-RX
Setting for
shift: -FSK
Setting for
Setting for
frequency
frequency
frequency
(C tune2 )
(C tune2 )
(C tune1 )
FSK-RX
ASK-TX
negative
nominal
positive
> 32 kBit/s NRZ
> 32 kBit/s NRZ
32 kBit/s NRZ
16 kBit/s NRZ
12 kBit/s NRZ
Max. Bitrate
TDA5251 F1
Version 1.0
Application
Default
Default
2003-02-18
0
1
0
0
1
0
0
0
1
0
1
0
0
0
1
1
0
0
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