Date printed: 24.01.12
95
D21m System
6.8.2 MadI Hd Cards
(
and
)
A949.04112x, A949.04132x, A949.04142x
The D21m MADI HD card is plugged into an HD card slot in the remote I/O
box and provides the link to the hub frame. 3 versions are available:
A949.04112x
Optical / multi-mode fibre version
A949.04132x
Optical / single-mode fibre version
A949.04142x
Twisted-pair version.
A949.04112x A949.0142x
A949.04132x
Please note: Starting with order nos. A949.041124 and A949.041323, resp.,
the MADI HD cards have been equipped with the larger dual-slot front panel
containing an additional RS422 control connector. At the same time the MADI
HD card with RJ45 connectors (A949.04142x) was introduced.
They are no exact replacements for the newer versions A949.04113x,
A949.04133x and A949.04143x (see
chapter 6.5.3
). However they may be
used instead as long as the GPIO main/aux switchover is not required.
The two interfaces offer up to 64 audio channels with 44.1/48/88.2/96 kHz
operation, together with embedded control and user-accessible RS422 serial
connection in each direction.
The aux interface can be used as a redundant link or, in 88.2/96 kHz opera-
tion, to extend the number of channels from 32 back to 64.
In slave mode, the cards extract the system clock from the incoming MADI
signals and provide it to the entire remote I/O box. They detect all other I/O
cards that are inserted into the D21m system and display their presence on
the front panel of the frame. Once all audio interface cards are plugged in,
pressing the
RECONFIG
key on the front panel confirms the configuration to
the system. Then all cards are activated and their audio signals are fed into
the MADI link. If switched to master mode, the cards run with an internal 48
or 96 kHz reference.
115.2 k
8, N, 1
A949.0414 only
F
S
Sync
AUX to MAIN
Sync out
CH1...32 out
CH33...64 out
UART1 out
UART2 out
Sync out
CH1...32 out
CH33...64 out
UART1 out
UART2 out
Sync in
CH1...32 in
CH33...64 in
UART1 in
UART2 in
out
to D21m
Backplane
D21m card
control signals
UART
in
from D21m
Backplane
Sync in
CH1...32 in
CH33...64 in
UART1 in
UART2 in
F
S
Sync
MAIN to AUX
MADI in
MADI in
MADI out
CH 1...32 in
Ch 33...64 in
CH 1...32 out
Ch 33...64 out
Ctrl
Ctrl
MADI out
Mode
56CH MODE
AUX
Red.
96k CH Ext.
MASTER/nSLAVE
UART MODE 1
UART MODE 0
UART
MODE 1
UART MODE 0
or UART MODE 1
UART MODE 1
96k/n48k
MASTER IF
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
MASTER IF
MASTER IF
MASTER IF
MASTER IF
SPLIT MODE
MASTER AUX
SPLIT MODE
MASTER MAIN
56CH MODE
Mode
MADI
Decoder
Sync
Generator
Selector and
Demultiplexer
Selector and
Multiplexer
EEPROM
(D21m Command
Field Parameters)
Microcontroller
MADI
Decoder
MADI
Encoder
MADI
Encoder
MADI
Port
AUX
MADI
Port
MAIN
RS422
Port
Pinout
Selector
