D19m Technical Description
E52 D19m
Date printed:
30.06.20
2.4.2
D19m TDIFO – Dual
8-Channel
TDIF Out
1.940.485/1.940.486
The TDIFO card converts the TDM bus signals to the TDIF format. 2 × 8
channels can be processed simultaneously, audio resolution is 24 bit. Em-
phasis information is taken from the first channel, because the TDIF format
has a common emphasis information for all channels only. The card is syn-
chronized with the frame and the CK128 clocks of the TDM bus.
The addressing must be done with four DIP switches on the backplane. For
this card, it cannot be performed automatically because more than four
audio channels are processed.
The second version of the TDIFO card (1.940.496) is designed for standa-
lone mode. It is equipped with four additional AES/EBU receivers per TDIF
output. A jumper on the backplane switches the ITDM signal that selects
whether the card reads from the TDM bus or from the AES/EBU receivers.
In standalone mode, a separate AES/EBU signal is used for synchronization
of the card. The source of this sync signal is selected with a jumper, either
from the TDM bus or from a separate input. If the sync signal should be
missing, the synchronization is automatically taken from the first AES/EBU
input.
Configuration:
Usually, the D19m cards are addressed just by plugging them into a slot of
the D19m rack. The first card has address 0 (CH1...4), the second card has
address 1 (CH5...8), etc. The TDIFO card, however, processes 16 mono
channels, and thus requires a specific address setting.
DIP switch No.
1
2
3
4
Address
on
on
on
on
1...16
off
on
on
on
5...20
on
off
on
on
9...24
off
off
on
on
13...28
on
on
off
on
17...32
off
on
off
on
21...36
on
off
off
on
25...40
off
off
off
on
29...44
on
on
on
off
33...48
off
on
on
off
37...52
on
off
on
off
41...56
off
off
on
off
45...60
on
on
off
off
49...64
CONTROLLER
BUFFER
AES/
EBU
IN 5
ADDRESS
BUFFER
TDIF
OUT 1
TDIF
OUT 2
AES/
EBU
IN 1
AES/
EBU
IN 6
AES/
EBU
IN 2
AES/
EBU
IN 7
AES/
EBU
IN 3
AES/
EBU
IN 8
AES/
EBU
IN 4
AES/
EBU
SYNC
AES/EBU
SYNC
TDM
BUS
CLOCK IN/OUT
CLOCK IN
ERF
DATA
DATA IN
CLK OUT
ERF
WCLK
OUT
1.940.486.xx only
CLOCKS
Summary of Contents for D19m
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