TDA7541 Datasheet, PDF (42/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

Software specification
5
Software specification
TDA7541
7.1 Chip address and overview
The interface protocol comprises:
– - start condition (S)
– - chip address byte
– - sub address byte
– - sequence of data (N bytes + Acknowledge)
– - stop condition (P)
Receive mode
S 1 1 0 0 0 1 D 0 ACK 0 0 I A4 A3 A2 A1 A0 ACK DATABYTEACK P
Transmission mode
S 1 1 0 0 0 1 D 1 ACK R7 R6 R5 R4 R3 R2 R1 S0 ACK P
S = Start
P = Stop
ACK = Acknowledge
D = Device address
I = Auto increment mode
A = Sub address
R = Read bit
5.1
Address organization
Table 13. Address organization
Function
Addr D7
D6
D5
D4
D3
D2
D1
D0
T PLL chargepump 0 SEEK ASFC
LM
SDM LDENA ICP2
ICP1
ICP0
T PLL counter
1
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
T PLL counter
2 PC15 PC14 PC13 PC12 PC11 PC10
PC9
PC8
T TV
3 TVO7 TVO6 TVO5 TVO4 TVO3 TVO2 TVO1 TVO0
T TV/IF counter
T PLL divider
4 FMON EW6 EW5
5 AMD7 AMD6 RC5
IFS4
RC4
IFS3
RC3
ISSENA
VCOD2
TVO+
VCOD1
TVM
VCOD0
T AGC
6 LNA7 LNA6 DAGC5 DAGC4 IFAGC3 IFAGC2 RFAGC1 RFAGC0
T Quality AC
7 TISS7 TISS6 TISS5 ACTH4 ACTH3 ACF BWDEF ISSBW
T Quality ACM/MP
T Quality DEV
8 MPTH7 MPTH6 MPAC MPENA ACMD ACMTH2 ACMTH1 ACMTH0
9 ISSM DTH6 DTH5 DWTH4 DWTH3 TDEV2 TDEV1 TDEV0
T Quality MUX/FSU 10 SSTH7 SSTH6 SSTH5 SSTH4
MUX1 MUX0
42/76