Sony DTC-670 Service Manual page 52

1C701 Display Micon (CXP5058H-68?OI
The Micon controls key input, FL tube display, remote control signat input, level meter (1C702) and EEP-ROM (IC703) according to instructions
from the Main Micon (IC3l2).
Pin No. PinName UO
Connected to
Description
l - 1 8
r9-28
29
30
3 l
e_-v_SEG
l0_-l_G
DSF:REQ
XTAL
EXTAL
o
o
I
FL tube FL70l
FLtubeFLTOI
MAIN Micon
Ceramic
oscillator
Ceramic
oscillator
FL Segment'e'-'v'
FL Grid #10+l
Communication requesr ('L" Active)
4.l9MHz ceramic oscillator
32
33
34
3542
43
RST
NC
vdd
AD-G7
NC
I
I
I Panel switch
System Reset ("L" active)
Not in use
Power terminal (+5 V)
Key input A/D converter input +*0 - #7
Not in use
M
45
46
47
48
DISP CK
so
SI
DSFtre-K
REC-MODE
o
o
I
o
I
MAIN Micon
MAIN Micon
MAIN Micon
MAIN Micon
s703
Shift clock
Serial data OUT
Serial data IN
Acknowledge (Active"L")
REC MODE "H": Standard, "L": Long
49
50
5t-54
5 5 , 5 6
57
TEST
CLOCK-SET
LVL-DT-O-3
LW-ADRS-o,I
mm
I
I
UO
o
o
Pull-down
Lævel MeterIC
I-evel MeterIC
lævel MeterIC
Test mode (Active "L")
Not in use
I-evel MeterDataG3
lævelMeterDaa0, I
I-evel Meter Read Mode (Active"L')
58
59
60
6 l
62
o
o
o
I
I
LæveI MeterIC
Iævel MeterIC
Open
Pull-up
Open
Iævel Meær Wriæ Mode (Active "I- )
Iævel MeterIC Selecr (Active"L )
Extemal rembte controller selected (not in
Not in use
Not in use
use)
63
64
65
66
67
RMC-CAT
NÛTE
BUSY
ROM-D]:IN
ROM-DT-OUT
Pull-down
rc431
EEPROM
EEPROM
EEPROM
Remote control category "L": DAT1, "H": DAT2.
Fixed at "L" with the equipment.
Level meter mute (Active "L")
BUSY signal (Active "L")
Data input
Data outout
6E
69
70
7 l
72
o
o
I
I
EEPROM
EEPR.OM
Pull-up
Open
Shift clock
Chip enable
Equipment model discriminarion inpur.
Powerterminal (GND)
Not in use
Fixed at "H" with the equipment
73
t 4
75
76
77-80
NC
TEX
Vref
Vfdp
a--d-SEG
I
I
o
Open
+ 5 V
+ 5 V
1 5 V
FL tube
Not in use
Not in use
Analog board reference voltage
FL display tube driving voltage
FL Segment'a'-'d'
- 5 0 -