Asi-To-Ip Converter Mode - Functional Block Diagram; List Of Abbreviations - DekTec DTM-3200 User Manual

DTM-3200 – OEM Ethernet TSoIP Converter
User Manual

1.6.2 ASI-to-IP converter mode - Functional block diagram

Figure 5 shows the functional block diagram of the DTM-3200 when it is configured as ASI-to-IP
converter.
Processor Subsystem
LVDS Intput
DVB-SPI
receiver select
Cable
DVB-ASI
equaliser serializer
Figure 5: Functional block diagram of the DTM-3200 when configured as ASI-to-IP converter
The incoming stream is received either through the serial or the parallel input. Only one stream c
be received at a time. If the Deserializer detects a valid input stream, the Input Selector selects th
DVB-ASI input, otherwise the Input Selector selects the parallel input. The TS Receive Cha
synchronizes to the stream and determines the packet size (188 or 204 bytes). If the DTM-3200 is
configured to generate FEC packets, the FEC Generator will create row and column FEC data. The
IP Embedder embeds the TS packets in IP packets. Finally, the PHY transmits the IP packets throu
the Ethernet interface.

1.7 List of abbreviations

ASI Asynchronous Serial Interface. Shorthand for DVB-ASI.
auto-MDIX Automatic medium-dependent interface crossover. Technique to
automatically detect the type of network cable: straight-through or
crossover.
DHCP Dynamic Host Configuration Protocol. Network protocol to automatically
assign an IP address to a network port from a server.
DVB Digital Video Broadcasting
FEC Forward Error Correction
IP Internet Protocol
MAC Media Access Controller
Mbps Megabit per second
NA Not Applicable
NC Not Connected
PCR Program Clock Reference
R/W Read / Write
RO Read Only
TS
FEC
Receive
generator
Channel
DDR2
SDRAM
Controller
De-
DDR2
SDRAM
IP
IP
Transmit-
Filter
ter
IP
Embed-
IP
der
Receiver
IP
Transmit-
ter
9
RS232 or
RS485 or
RS422
2
I C
ETHERNET
INTERFACE
Phy
MAC