TEF6721HL_4 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 04 — 20 December 2005 6 of 48
Philips Semiconductors
TEF6721HL
Car radio tuner front-end for digital IF
FMMIXOUT2 11 FM mixer IF output 2 (10.7 MHz)
AMMIXOUT2 12 AM mixer IF output 2 (10.7 MHz)
V
DDA2
13 analog supply voltage 2 (8.5 V) for FM and AM RF
SWPORT1 14 software programmable port 1
AMMIXDEC 15 AM mixer decoupling
AMMIXIN 16 AM mixer input
VAMCAS 17 output for AM RF cascode AGC
VAMCASFB 18 feedback input for AM RF cascode AGC
IAMAGC 19 PIN diode drive current output of AM front-end AGC
TAFAMAGC 20 AF time constant of AM front-end AGC
TRFAMAGC 21 RF time constant of AM front-end AGC
VREFFMMIX 22 reference voltage for FM RF mixer
FMMIXIN1 23 FM mixer input 1
RFGND 24 RF ground
i.c. 25 internally connected; connect to ground
FMMIXIN2 26 FM mixer input 2
WBFLAG 27 buffered weather band flag output
IFMAGC 28 PIN diode drive current output of FM front-end AGC
AGCBUF 29 monitor current output of FM and AM front-end AGC
DAAOUT 30 output of Digital Auto Alignment (DAA) circuit for antenna tank
circuit
KAGCADJ 31 adjustment for FM keyed AGC function; leave open-circuit
TFMAGC 32 time constant of FM front-end AGC
KAGC 33 level input for FM keyed AGC function from IF DSP
DAATD 34 temperature compensation diode of DAA circuit for antenna tank
circuit
DAAIN 35 input of DAA circuit for antenna tank circuit
VTUNE 36 VCO tuning voltage
CPOUT 37 charge pump output
V
DDA3
38 analog supply voltage 3 (8.5 V) for tuning PLL
DGND 39 digital ground
V
DDD
40 digital supply voltage (5 V)
VCOGND 41 VCO ground
OSCFDB 42 VCO feedback input
OSCTNK 43 VCO tank circuit
V
DDA4
44 analog supply voltage 4 (8.5 V) for VCO
ADDRSEL 45 hardware address select for I
2
C-bus
BUSENABLE 46 enable input for I
2
C-bus
AFSAMPLE 47 AF sample flag output for IF DSP
AFHOLD 48 AF hold flag output for IF DSP
SDA 49 I
2
C-bus Serial Data (SDA) line input and output
Table 3: Pin description
…continued
Symbol Pin Description
