TDA5150 Datasheet, PDF (68/106 Pages) Infineon Technologies AG – On-chip, high resolution fractional-N synthesizer and Sigma-Delta modulator with ASK, FSK, GFSK options

TDA 5150
TDA 5150 Functional Description
2.5.2 SFR Detailed Descriptions
ADDR 0x00
SPICHKSUM—SPI Checksum Register
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SPICHKSUM SPICHKSUM SPICHKSUM SPICHKSUM SPICHKSUM SPICHKSUM SPICHKSUM SPICHKSUM
c/0
c/0
c/0
c/0
c/0
c/0
c/0
c/0
Bit <7:0> SPICHKSUM
SPI checksum bit <7:0>
SPICHKSUM
ADDR 0x01
Readout and clear the SPI checksum (8-bits),
generated by each write to SFR register
TXSTAT—Transmitter Status Register
Bit 7
1
/
Bit 6
n.u.
/
Bit 5
LBD_2V1
r/0
Bit 4
LBD_2V4
r/0
Bit 3
Bit 2
Bit 1
VAC_FAIL BROUTERR PARERR
c/0
c/1
c/0
Bit 0
PLLLDER
c/0
Bit 7
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
LBD_2V1
LBD_2V4
reserved
BROUTERR
PARERR
PLLLDER
Mandatory to keep set (1)
battery low detected at 2.1 V -
battery low detected at 2.4 V
Don’t care
Brown out detector error
Parity error
PLL lock detector error
LBD_2V1
LBD_2V4
BROUTERR
PARERR
PLLLDERR
Battery voltage drop below 2.1 V detected if 1 NOTE: bit invalid in standby mode.
Battery voltage drop below 2.4 V detected if 1 NOTE: bit invalid in standby mode
Brownout error detected if 1
Parity error detected if 1
PLL lock error detected if 1
Data Sheet
68
V 1.0, July 2009