JVC HR-D540EE - Page 90

2.
6-2
IC1 pin function (Timer)
$3 Sd
$2 Sc
$1 Sb
so Sa
Contents
D
PESMENT PICEA ATA Key SCAN PULSE OUTPUT
/KEY SCAN PULSE OUTPUT
POO/INT4 “| POWER DOWN
"| POWER DOWN DETECT (DETECT ON: L)
PO1/SCK NC
PO2/SD NC
NC
| Po3/si TEST
TEST POINT (CLOCK ADJUST/FDP CHECK/X10 SPEED set)
P10/NTO REMOTE
| REMOTE DATA 16 bit SERIAL DATA (A/8 code)
P11/INT1 NC
P12/NT2 NC
NC
P13/T10 CNT PLS
“| COUNTER DATA
P20 ~ | KSO
P21 KS1
P22 KS2
P23/BUZ KS3
KEY SCAN DATA INPUT
P30 ~T TIMER DATA
P31 TIMER CLK
P32 SDA
P33 SCL
: 16 bit DATA
ER/M-CTL CPU
TM (TIMER/M-CT! )} bus » CLOCK
VIDEO PROGRAMING SYSTEM: |? C Bus
VIDEO PROGRAMING SYSTEM: CLOCK
P60 TNC
P61 NC
P62 NC
P63 NC
P40
P41
P42
P43
PPO NC
x1
X2
Vss
NC
NC
NC
NC
AUTO TRACK
LED DRIVE {LED ON: L)
MAIN SYSTEM CLOCK (4.19 MHz)
GND
GND (ALWAYS GND)
NC
LED DRIVE (LED ON: L}
NC
NC
RESET
| RESET AT CONNECT VCR TO AC
4G
5G
6G
7G
1G
2G
3G
8G
9G
COLUMN DISPLAY DATA
Ke
T10/S15/PH3 | SP
T11/S14/PH2 | So
T12/S13/PH1 Sn
T13/S12/PHO | Sm
714/811 SI
/KEY SCAN PULSE OUTPUT
Y
SEGMENT DIGEST RATA /KEY SCAN PULSE OUTPUT
T15/S10 Sk
Voao
Vere
-30V
| le 5V For the FDP DRIVE
sg
s8
$7
S6
$6
$4
/KEY SCAN PULSE OUTPUT
/KEY SCAN PULSE OUTPUT
SEGMENT PISPLAYPAT /KEY SCAN PULSE OUTPUT
/KEY SCAN PULSE OUTPUT
5V For the SYSTEM CONTROL
Table 6-2 IC1 pin functions
E. & O. E. No. 82203