Samsung DVD-807K, Service Manual

Page: 39 / 165

IC Descriptions
6-28 Samsung Electronics
N A M E
V
D D A 4
X C L K
V
S S 3
V
D D 3
R E S N
S C L
S D A
T T X R Q
T T X
PIN ASSIGNMENT
I/O
I
O
I
I
I
I
I/O
O
I
PIN
3 6
3 7
3 8
3 9
4 0
4 1
4 2
4 3
4 4
F U N C T I O N
Analog supply voltage 4 for the DAC reference ladder and the oscillator
Clock output of the crystal oscillator
digital supply ground 3
digital supply 3
12C serial clock input
12C serial data input/output
Teletext Request output, indicating when text bits are requested
Teletext bit stream input
Reset input, active LOW. After reset is applied, all digital I/Os are in input mode; PAL-
Blackburst on CVBS, VBS and C;RGB outputs set to lowest voltage.
The 12C-bus receiver waits for the START condition.