Circuit Descriptions
EN 47Q548.1E LA 7.
2009-Apr-03
The weakness of the conventional CI module used in a
Conditional Access system was the absence of a Copy
Protection mechanism, as decrypted content could be sent
over the PCMCIA interface unscrambled. With the CI+
extension, a form of copy protection is established between the
Conditional Access Module (CAM) and the Integrated Digital
Television (IDTV). The security mechanisms in CI+ are
derived/copied from POD (with the exception of Out Of Band
(OOB) used in US CA systems). For more information about
conventional CA systems using a CI module, refer to the
BJ3.0E L/PA or BL2.xU Service Manual.
The CI+ standard is downwards compatible with the existing CI
standard.
The following figure shows the implementation of the CI+
Conditional Access system in the TV543 platform.
Figure 7-13 CI+ Conditional Access implementation
7.8 Ambi Light
The Ambi Light architecture in this platform has been entirely
renewed. The characteristics are:
• Additional DC/DC board generating 12/16/24 V (optional)
• ARM processor (on DC/DC panel or AL board)
• Low-power LEDs
• SPI interface from ARM to LED drivers
•I
2
C upgradeable via USB
• Each AL module has a temperature sensor.
The use of the DC/DC board is optional. In case no DC/DC
board is implemented, the ARM processor is located on one of
the AL boards.
Refer to Figure 7-14
for the Ambi Light architecture.
Figure 7-14 Interface between Ambi Light and SSB
7.8.1 ARM controller
Refer to Figure 7-15
below for signal interfacing to and from the
ARM controller. The ARM controller is located on the DC/DC
board (item no. 7302) or AL panel (item no. 7102).
Figure 7-15 ARM controller interface
Data transfer between ARM processor and LED drivers is
executed by a Serial Peripheral Interface (SPI) bus interface.
CAM
PNX8543
TS-INP U T
Transport Streams
CA-Control
CA-MDI
CA-MDO
CA-CTRL
PCI/XIO
Proprietary CA
scrambling
CI + Standardised CCS
scrambling
DES/AES
descrambler
MHEG MMI
application
Matrix
Matrix
tuner
channel
decoder
DES/AES
scrambler
CA client
MHEG CI+
decoder
demux
(SC)
Command
interface
Transport stream
interface
18440_221_090227.eps
090227
18310_203_090317.eps
090317
18310_204_090318.eps
090318
ARM
S DA
S CL
S EL1
S EL2
SPI CLOCK
SPI LATCH
SPI DATA OUT
SPI DATA RETURN
PWM CLOCK
BLANK
PROG
SPI LATCH 2
(only on dc/dc for aurea)
C S EEPROM
TEM P
S cl1
S da 1
tbd
tbd
S ck
P0.7
MOSI
MIS O
P0.8
TxD
RxD
Rxd0
Txd0
MAT0.0
MAT1.0
tbd
tbd
P0.10
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