Circuit Descriptions
7.
Figure 7-12 LED grouping per board
The communication between PNX85500, Complex
Programmable Logic Device (CPLD) and the Ambilight module
uses the SPI protocol; refer to figure
. Between the CPLD and the LED
driver, as “extra” line is mentioned:
•
Non-SPI signals that are required for the LED driver
•
Temperature sensor line.
Figure 7-13 Communication protocol outside LED board
Refer to figure for an overview of the communication inside the
LED board.
Figure 7-14 Communication protocol inside LED board
The buffer is built around item no. 7B20 (diagram AL1A) and
regenerates the clock signals. Refer to figure
.
Figure 7-15 Ambilight buffer
The temperature sensor is built around item no. 7B30 (diagram
AL1A) and indicates overtemperature of the board. Refer to
figure
Figure 7-16 Temperature sensor
The EEPROM (item no. 7B07; diagram AL1A) contains
alignment information about the mounted LEDs and is
programmed during the alignment process in production. Refer
to figure
.
Figure 7-17 EEPROM
The LED driver is built around item no. 7B26 (diagram AL1A)
and controls the LEDs. Refer to figure
.
1
8
770_210_100126.ep
s
100126
3
×
6
L
E
D
1
8
4
×
6
L
E
D
24
5
×
6
L
E
D
3
0
4
+
5
L
E
D
9
2
×
6
L
E
D
12
3
×
5
L
E
D
15
6
×
6
L
E
D
3
6
1
8
770_211_100126.ep
s
100126
C P LD
P N X
S
P I
S
P I + e x tra
1M
59
1
8
770_21
3
_100126.ep
s
100219
LE D
D river
E E P R O M
B uffer
S
P I
S
P I
S
P I
S
P I
S
P I
1M
83
1M
8
4
E x tra
Tem p
s
en
s
or
Te m p
1
8
770_214_100126.ep
s
100126
+
3
V
3
8
3
B
3
0-1
220R
1
4
5
220R
3
B
3
0-4
3
B01-1
100R
1
8
5
6
7B20-1
74LVC2G17
1
2
2B17
100n
33
p
2B01
100R
3
B01-2
2
7
100p
2B02
+
3
V
3
3
25
4
74LVC2G17
7B20-2
33
p
2B00
2B10
100p
PWM-CLOCK
S
PI-CLOCK-BUF
PWM-CLOCK-BUF
S
PI-CLOCK
1
8
770_215_100126.ep
s
100126
-T
+
3
V
3
10n
2B09
FB40
2B0
8
10n
1K5
1
%
3
6
3
B
3
9-2
27
3
B
3
9-
3
1
%
1K5
1
3
4
5
2
LMV
33
1IDCK
7B
3
0
+
3
V
3
1K5
1
%
8
1
3
B
3
9-1
3
B
3
4
RE
S
100K
10K
3
004
RE
S
3
B11
10K
+
3
V
3
FB41
TEMP-
S
EN
S
OR
1
8
770_216_100126.ep
s
100126
S
GND
Q
HOLD
W
VCC
C
D
+
3
V
3
4
1
2
3
5
7B06
74LVC1G
3
2GW
2B20
100n
4
7
2
1
8
3
+
3
V
3
M95010-WDW6
7B07
(64K)
Φ
6
5
+
3
V
3
10K
3
B02-2
2
7
1
8
3
B02-1
10K
+
3
V
3
S
PI-CLOCK-BUF
S
PI-DATA-IN-BUF
S
PI-DATA-RETURN
S
PI-C
S
DATA-
S
WITCH