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User’s Guide
KDS Interface Cabling and Connectors
The connectors to be used are 15-pin “Mini-D” style as used in IBM-PC VGA
interconnect. The KDS output connector is a receptacle, the KDS input
connector is a plug.
The AMP Part Numbers are as follows:
PC Mount Plug
749767-1
PC Mount Receptacle
748390-6
Cable Mount Plug
748364-1
with 748333-2 (Strip) or 748333-4 (Loose) crimp-on pins
Cable Mount Receptacle 748565-1
with 748610-2 (Strip) or 748610-4 (Loose) crimp-on sockets.
Output drivers are AMD, Philips, Motorola, TI, or National AM26LS31. Input
receivers are AMD or Philips AM26LS32B. Coilcraft DLF8000 common mode
chokes are placed in series with each input or output signal as close as possible
to the KDS output and input connectors. Depending on the system, Tokin
DL03 common mode chokes may be necessary to meet EMI emissions
requirements. The Tokin chokes have separate cores for each twisted pair as
opposed to the Coilcraft part that uses one core for all four pairs. Each output
signal should have a 68pF NPO 5% capacitor tied to chassis ground. These
capacitors should be placed as close to the connector pins as possible with lead
lengths as short as possible. PC board traces for KDS output and input
differential pairs should be kept short and routed parallel to one another.
The KDS connector pinout is as follows:
Pin
Name
Pin
Name
Pin
Name
Pin
Name
Pin Name
1
Data+
2
Sync+
3
Clk+
4
n/c
5
AES+
11
Data-
12
Sync-
13
Clk-
14
n/c
15
AES-
6
Gnd
7
Gnd
8
Gnd
9
Gnd
10
Gnd
KDS pins 4 and 14 are not connected. KDS pins 6-10 must be connected to
Chassis Ground via the shortest, lowest impedance path possible. It is
assumed that Logic Ground has a low-impedance connection to Chassis
Ground at some point(s) in the system. The mounting clips for KDS connectors
must also be connected to Chassis Ground via the shortest, lowest-impedance
path possible.
