Sanyo EP93F - Manual (Page 28)

LC72350 LA1776M LC72350
Series Series
LA1776M
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
+
+
+
+
+
+
+
+
+
+
+
+
+
0.022
µ F
0.022
µ F 100
0.022
µ F
0.022
µ F
0.022
µ F
3p
0.022
µ F
0.001
µ F
22
µ F
0.1
µ F 0.01
µ F
0.47
µ F
0.015
µ F
0.015
µ F
AGC ADJ
AM/FM OSC BUFF
100k
220k
100
180 100k
100k
100k
100k
SVC208
0.022
µ F
FC18G
+ + +
+
75
620 1M
100k
min:5k
100 µ F
470
100 µ F
100
µ F
200
100k
220
30M
15p
RF-AGC
AM-MIX-OUT
AM-IF-OUT
AM-IF-IN
FM-IF-IN2
FM-IF-OUT 15p
30 1000p
1000p
1000p
1000p
1000p
15p
AM VCC 8V AM ANT AM/FM ANT IN AM/FM VT FE GND AM/FM SW 10.25kHz IN L-ch R-ch GND VCC FM/AM VSM AM/FM
OSC BUFF
FE VCC
10p
10p
MIX-IN
MIX-IN
AM-MIX-IN
AM-NB-AGC
AM-IF-IN1
FM-WB-AGC AM-SD-ADJ
FM-IF-IN1
MUTE-ATT
FE VCC 33
MIX-OUT
MIX-OUT
6p IN
100k
100k
AM 2nd
MIX IN
VCC
BV
30k
8p
150k
33k
18p
33p
1000p
AM OSC
LPF OUT HOLD
PLL
IN
10.25M IN
NC,MPX GND MPX OUT
L
MPX OUT
R 300p 22p
FM
ANT
D
SVC208
NOISE AGC
SEN
FM RF1-AGC FM OSC
FE GND
AGC 6800p
PI-CAN
OUT
PI-CAN IN
0.01 µ F
0.047 µ F
0.022 µ F
3.3 µ F
3.3 µ F
0.22 µ F 0.22
µ F
0.022
µ F
0.022 µ F
0.022
µ F
100
µ F
3.3
µ F 1 µ F
FM-SD-ADJ
PILOT
-DET
AM LC
VCC
1 µ F 1 µ F 2.2
µ F
0.022 µ F
100k
47k
20k
SEP-ADJ CSB 912kHz
VCO
PHASE-
COM
PHASE-COM IF Buffer
5/2.5/0V
IF COUNT BUFFER
AM/FM VSM
GND
51k
GAD
SNC
HCC NC-IN
FM-VSM
DET-OUT
MRC-OUT
MRCADJ
30k
68k
8200p
1000p
MUTE-DRIVE VREF AFC-IN 2.7V
1.3k 30k 100k
10k
KEYED AGC
MUTE-ON
ADJ
ST IND
AM/FM SD
AM/FM SD
ST
IND
5V
AM-IF-AGC
56k
AM-IFT
AM-ANT
-D
RF-AGC BYP
ASS AM-W
AGC-IN
ANT-D
FM OSC
BUFF
AM OSC
BUFF FM RF
AGC
AM OSC
FM OSC
N-AGC
W-AGC
AM/FM MIX
AM MIX
LEVEL DET
AM W-AGC
AM
N-AGC
AM
Vsm
AMIF
AGC
AMDET AMLC
AM
IF1
AM
IF2
AM
X OSC
1ST IF AMP
MUTE
ANT D
AM AGC
drive
KEYED AGC
IF-AMP
IF-AMP
IF-AMP
IF-AMP
IF-AMP
IF-AMP
Zap
MUTE
drive
1
3
2
FM AFC
H det
s mute
FM Vsm
Q.DET
MUTE AMP.
REG BUFF
Mute
ATT control
REG
2.7V
REG NC.MPX
REG
FM IF
REG
AM
REG
FE
SW
IF
count AMP
IF count SW
FM/AM
SD-ST IND
AM/FM SW
MRC out2
time
const
MRC
noise amp
tri ger
pilot det
pilot
can
phase comp VCO stop HCC
SNC FF 38k FF 19k
FF VCO
Main HC
Sud De coder
MATRIX
NC
HPF
NC
LPF
AGTE TRIG NC
AGC
ECL
ECL
ECL
ECL
ECL
+ -
XIN
XOUT FMIN
SNS
AMIN HCTR LCTR
PH2/ADI2 PH1/ADI1 PH0/ADI0 PI1/ADI5 PI0/ADI4
ALU
TIMER 0 TIMER 1 LATCE
B
LATCE
A
read/sritc status register read only status register ADC (6 bits)
JUDGE
INTERRUPT
CSUST DO
JDC CCD
BANK
C F
STACK
PROGRAM COUNTER
INSTRU- CTION DECODER
BUS
CONTROL
SKIP
JMP CAL RETURN INTERRUPT RESET
ROM RAM
ADDRESS DECODER
8k 16bits (LC72358) 12k 16bits (LC72362) 16k 16bits (LC72366) 512k 4bits (LC72358/362) 1024k 4bits (LC72366)
BANK
ADDRESS DECODER
Time PHASE CONTROL UNIVERSAL COUNTER (20 bits)
DIVIDER SYSTEM CLOCK GEMERATOR SNS F/F RESET RESET
VDET
PROGRAMABLE DIVIDER 1/114,1/124
1/16,1/17
MPX
PH3/ADI3
DATA LATCH BUS DRIVR. DATA LATCH BUS DRIVR. BUS DRIVR.
IOS
ISO
IOS
DATA LATCH BUS DRIVR.
IOS
PJ3 PJ2 PJ1 PJ0 PK3 PK2
PG0
PK1/INT1 PK0/INT0
INTERUPT
DATA LATCH BUS DRIVR.
IOS
PL3 PL2 PL1 PL0
DATA LATCH BUS DRIVR. DATA LATCH BUS DRIVR.
IOS
DATA LATCH BUS DRIVR.
IOS
PM3 PN3 PN2 PN1 PN0/BEEP PM2 PM1 PM0
DATA LATCH BUS DRIVR.
PO3 PO2 PO1 PO0
DATA LATCH BUS DRIVR.
PP3 PPQ EO1 EO2 BUSPD EO3 PP2 PP1 PP0
MPX
BEEP TONE
PHASE DETECTOR
REFERENCE DIVIDER
PLL Data Latch
PHASE DETECTOR SUB C.P
PCK0/PG1 SO0/PG2 SI0/PG3
IOS
PF0
PCK1/PF1 SO1/PF2 SI1/PF3
IOS
PE0 PD0 PC0 PB0
BUS DRIVR.
PA0
TEST2 TEST1 MOLD
PA1 PA2 PA3 PB1 PB2 PB3 PC1 PC2 PC3 PD1 PD2 PD3
PCK2/PE1 SO2/PE2 SI2/PE3
3
SNS VDD VSS
1/2
PLL CONTROL
DATA BUS
DATA LATCH BUS DRIVR. DATA LATCH BUS DRIVR. DATA LATCH BUS DRIVR. DATA LATCH BUS DRIVR. DATA LATCH BUS DRIVR. DATA LATCH BUS DRIVR.
14 14
9p
51 Car Audio 52 Car Audio
System-on-Chip Tuner IC for Car Stereo Systems System-on-Chip Tuner IC for Car Stereo Systems
New
product
New
product
New
product
Overview
Functions
Overview
Functions
Features
Block Diagram Block Diagram
Electronic Tuning ETR Controllers Electronic Tuning ETR Controllers
The LC72350 Series (LC72358N, LC72362N, and LC72366) are system-on-chip electronic tuning
microcontrollers with a 1.33
µ s instruction execution time.
These devices include both a high-speed locking circuit and a high-performance direct PLL circuit that can control
the local oscillator C/N characteristics.
■ ROM: 16 KB (LC72358N)
24 KB (LC72362N)
32 KB (LC72366)
■ RAM: 512 nibbles (LC72358N and LC72362N)
1024 nibbles (LC72366)
■ A/D converter: 6-bit successive approximation A/D converter with 6 input channels
■ PLL: Built-in sub-charge pump for high-speed locking, built-in dead zone control
■ Serial I/O: Three channels (8-bit 3-wire serial I/O)
■ Multiple interrupt support: 4 levels
■ Cycle time: 1.33 µ s (4.5 MHz)
■ QTP version: LC72P366
■ Package: QIP80E (14 20 mm)
■ Characteristics improved by new noise prevention measures in the mixer and amplifier blocks
■ Three-signal characteristics improved due to increased dynamic range in the FM front end mixer
■ Improved AM practical sensitivity and saturation signal-to-noise ratio
■ FM S-meter shifter function can adjust for sample-to-sample variations in the S-meter
(Fixed resistors are used for SD, KEYEDAGC, MUTE ON ADJ, MUTE ATT, SNC, and HCC.)
■ High-speed search is possible using the FM band muting time constant switching function
■ The low power consumption of the earlier device has been reduced even further
■ Increased flexibility in the MRC setting
■ Package: QIP64E (14 14 mm)
■ FM front end
■ Multiplex
■ Noise canceller
■ FM/AM switch
■ FM IF
■ AM upconversion
■ MRC
The LA1776M is a car radio AM/FM tuner IC that is based on the current LA1787M but features improved AM
upconversion (for improved reception characteristics) and improvements in most other characteristics as well.
The LA1776M pin arrangement is only slightly changed from the LA1787M for easy printed circuit board pattern
design.