tda5251f1 Infineon Technologies Corporation, tda5251f1 Datasheet - Page 29

• Manufacturer Part Number: tda5251f1
• Description: Ask/fsk 315mhz Wireless Transceiver
• Manufacturer: Infineon Technologies Corporation

Confidential
Preliminary Specification
Table 2-22
Table 2-26
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Bit
D7
D6
D5
D4
D3
D2
D1
D0
COMP_0,5*HIGH
COMP_0,5*LOW
COMP_0,5*IN
COMP_HIGH
COMP_LOW
RSSI=TH3
RSSI>TH3
COMP_IN
Function
Function
not used
SELECT
TH3_5
TH3_4
TH3_3
TH3_2
TH3_1
TH3_0
Sub Address 08H: RSSI_TH3
Sub Address 80H: STATUS
Table 2-25
D15
D14
D13
D12
D11
D10
Bit
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Table 2-24
Bit
D7
D6
D5
D4
D3
D2
D1
D0
0= VCC, 1= RSSI
1 if RSSI value is greater than TH3
1 if 0,5*TH1 < data rate < 0,5*TH2
DATA_SLIC_PD
PEAK_DET_PD
Description
DATA_FIL_PD
WINDOW_PD
1 if RSSI value is equal TH3
I/Q_FIL_PD
QUAD_PD
1 if TH1 < data rate < TH2
XTAL_PD
Function
MIX2_PD
MIX1_PD
FSK-Ramp 0
FSK-Ramp 1
Bipolar_FET
REF_PD
ADC_PD
LNA_PD
PLL_PD
LIM_PD
1 if data rate < 0,5*TH1
1 if 0,5*TH2 < data rate
RC_PD
PA_PD
Function
1 if data rate < TH1
1 if TH2 < data rate
Description
Sub Address 0FH: BLOCK_PD
Sub Address 0EH: XTAL_CONFIG
Default
1
1
1
1
1
1
1
1
1= power down Band Gap Reference
1= power down Quadri Correlator
1= power down Window Counter
1= power down Peak Detectors
1= power down Power Amplifier
1= power down XTAL Oscillator
1= power down RC Oscillator
1= power down Data Slicer
1= power down Data Filter
1= power down I/Q Filters
1= power down I/Q Mixer
1= power down 1st Mixer
1= power down Limiter
only in bipolar mode
1= power down ADC
0= FET, 1=Bipolar
1= power down LNA
1= power down PLL
29
Table 2-23
Description
Description
not used
not used
not used
not used
not used
Table 2-27
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Function
PD_ADC
SELECT
RSSI_5
RSSI_4
RSSI_3
RSSI_2
RSSI_1
RSSI_0
Sub Address 0DH: CLK_DIV
Sub Address 81H: ADC
DIVMODE_1
DIVMODE_0
CLKDIV_3
CLKDIV_2
CLKDIV_1
CLKDIV_0
Function
not used
not used
Default
Functional Description
0
0
0
0
0
0
0
1
Default
ADC power down feedback Bit
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SELECT feedback Bit
RSSI value Bit5
RSSI value Bit4
RSSI value Bit3
RSSI value Bit2
RSSI value Bit1
RSSI value Bit0
Description
TDA5251 F1
Version 1.0
2003-02-18
Default
0
0
0
0
1
0
0
0