Figure 1: 7700Sid And 7700Sid-Am Block Diagrams - evertz 7700 Manual

7700 MultiFrame Manual
7700SID(-AM) Source Identification Decoder
SD Serial Input
270 Mb/s
S/P
Decoders
Serial digital video is converted to parallel and embedded audio, VITC and PESA Source ID are extracted
from it. The audio is converted to analog (7700SID-AM only) and delivered out the high density DB-15
connector on the rear of the card. The audio is also read by the CPU and further processed to extract level
information. The CPU creates the level bar graphs and writes them out to the On Screen Display (OSD)
memory.
The CPU also reads raw VITC and PESA SID data and extracts time code and the source ID information.
The time code and source ID message is also written to the OSD memory.
The hardware pulls out the OSD information and mixes (keys) the text and bar graphs onto the video
stream. This video goes out digitally through a parallel to serial converter as well as analog through a
composite encoder.
The CPU also gets push button and toggle switch commands from the card edge controls and draws
extensive menus for configuring the operation of the card.
General purpose inputs are used for remote control of some features and general purpose outputs are
generated under error conditions.
7700SID(-AM)-2
Audio
Demux
Mixer
Key Fill
VBI
OSD
Memory
CPU

Figure 1: 7700SID and 7700SID-AM Block Diagrams

Audio
D to A
Cable
P / S
Driver
Composite
Analog
Encoder Buffer
Card
Video Audio Module
Edge
Present Present Status
Control
Revision 0.3
HD DB-15
Audio and GPI/O
SD Serial Output
NTSC or PAL
Composite Output
GPI/O
270 Mb/s