Figure 12-1. Hssi Interface Block Diagram; Figure 12-2. Hssi Interface - Comtech EF Data CDM-710 Installation And Operation Manual

CDM-710 Broadcast Satellite Modem
CDI-60 HSSI Interface
Figure 12-2 shows a picture of the CDI-60 HSSI interface and the SCSI-2 connector that serves
as the data port. A summary of specifications for the interface is provided in Table 12-1 and the
connector pinout is shown in Table 12-2.
When a HSSI card is installed in Slot 1, Slot 2 is a blank panel.
J1
TT
SD
ST
TA
CA
RT
RD
Common
Tx Clock Input (External)
Tx Data
Output Clock (Rate Programmable)
(RTS)
(CTS)
Rx Clock
Rx Data

Figure 12-1. HSSI Interface Block Diagram

Figure 12-2. HSSI Interface

12–2
MN/CDM710.IOM
Processor
Processor
Mux /
Mux / Clk
Demux
&
Demux
Data
PLL
PLL
Modem
Interface
Rx
Rx
C
Buffer
Buffer
Interface
Interface
Loopback
Loopback
Control
Control
HSSI Interface
Revision 9