Durabrand DTV1307 Service Manual page 26

OEC7177A (IC102)
No. Pin name
69 VSS
70 FILT
71 VDD
72 NC
73 POWER_FAIL
74 POWER_ON
75 REMOCON
76 IIC_OFF
77 SCL
78 NC
79 SDA
80 NC
IC DESCRIPTION
I/O
-
GND.
- Filter connection terminal for clock.
-
AT +5V.
O Unused(LOW is output).
Input terminal for power failure detection.
When LOW is input, the power failure processing is done.
I
The POWER FAIL detection is not done at the time of the POWER OFF (The terminal "STANDBY-H"
outputs Hi-z).
The voltage of the main body key is input.
I
(POWER)
I REMOCON input.
IIC BUS STOP input terminal.
When LOW is input, IIC BUS communication (SCL/SDA) is output in Hi-z. Afterwards, if HIGH is input, read
the data of EEPROM, the data of CHROMA is updated. It returns from the state of IICBUS OFF without
changing the terminal processing
I
control from an existing state of operation when IICBUS returns.
HIGH : Time usually
LOW : All terminals for the IICBUS communication are assumed to be Hi-z output.
IIC BUS CLOCK output terminal.
O
EEPROM, CHROMA, and TUNER are controlled.
O Unused(LOW is output).
IIC BUS DATA output terminal.
I/O
EEPROM, CHROMA, and TUNER are controlled.
O
Unused(LOW is output).
F-3
Function