tda4856-v6 NXP Semiconductors, tda4856-v6 Datasheet - Page 39

• Manufacturer Part Number: tda4856-v6
• Description: I2c-bus Autosync Deflection Controller For Pc Monitors
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Power-down mode
Power dip of V
Power dip of V
Standby mode detection
Execute data transmission twice to assure that there was
no data transfer error.
2003 Sep 30
handbook, full pagewidth
The soft down sequence is started first
Then the soft start sequence is generated internally.
This function is independent from the operating mode,
therefore it works under any condition
All driver outputs are immediately disabled
IC enters standby mode.
I
PC monitors
(1) See Fig.18.
2
C-bus autosync deflection controller for
CC
CC
< 8.6 V:
< 8.1 V or V
all register contents are random
no acknowledge is given by IC
Power-Down Mode
CC
(ANY Mode)
shut-down:
L1
(1)
V CC
Fig.20 I
8.1 V
MGM079
2
C-bus flow for any mode.
39
yes
yes
Fig.21 Possible standby mode detection.
S
S
V CC
8.6 V
8.1 V
V CC
8.6 V
8.1 V
chip address
chip address
8CH
8CH
a soft down sequency followed by a
soft start sequence is generated
internally.
IC enters standby mode.
I
I
2
2
Normal operation
C-bus transmission
acknowledge was
C-bus transmission
acknowledge was
A
A
Standby mode
given on data?
given on data?
subaddress
subaddress
0XH
0XH
no
no
A
A
Product specification
MGS276
XXH
XXH
data
data
TDA4856
A
A
P
P