Hypercom IEN 1000, Hardware Reference Manual, Page: 71 / 198

PORT PROCESSORS/MODULES
940043-002 INTEGRATED ENTERPRISE NETWORK 3-25
DSX11
The DSX11 port processor (Part #030012-001) is a single CPU that interfaces with a DSX-1
T1 line to the node PCM bus. The DSX11 port processor contains all circuitry necessary to
convert the 4-wire, self-clocked AMI T1 signal to the synchronous TDM PCM highway. The
DSX11 port processor contains a high-performance Digital Phase Locked Loop (DPLL) that
synchronizes the internal 2.04 and 4.08 MHz PCM highway clocks to the incoming T1
signal.
The reverse is true when the DSX11 port processor is used to provide master clocking. That
is, the T1 transmit clock is locked to the PCM highway clock. In addition, the DSX11 port
processor contains a 512-channel digital space-time switch used for multiplexing and
channel control. The DSX11 port processor supports ISDN PRI when combined with CID61
port processor for D and B channel termination. Figure 3-21 illustrates the bus
communications for the DSX11 port processor.
Note: The DSX11 is a DSX-1 interface and is not intended to be connected to a Telco DEMARC.
Figure 3-21 DSX11 Bus Communications
Figure 3-22 illustrates the block diagram for the DSX11 port processor.
Figure 3-22 DSX11 Block Diagram