iPECS eMG800
Hardware Description and Installation Manual
Issue 1.8
27
4.2
Main Processing Board
The Main Processor Board controls communication between the peripheral boards, supervises all resources in
the system, controls the gain adjustment of the PCM signal, generates the System tones, maintains System
audio prompts and manages System call processing.
The MPB (Figure 4.2 1) is the main control for the System, and is composed of the microprocessor and
memory, the PCM management and miscellaneous functional circuits.
The MPB must be installed in the MPB slot, the upper left (1st) slot of the BKSU.
Figure 4.2-1 MPB
If an MPB is not installed, DC Power (+5V, +30V) will not feed to the backplane and other boards or EKSUs.
The following devices and functions are included on the MPB:
Main Processor: MINDSPEED Cortex A9, M86295G, 900MHz
PCM Voice Processing circuit (ACT2) - PCM voice switching, System Tone/Gain Control
Tone (DTMF/CPT) Detection/CID Signal (FSK/DTMF/RCID) Detection/CID Generation
1 Coin Battery for Real Time Clock Function store of System Time/Date
System Memory [DDR3 SDRAM/ Flash ROM/NAND Flash]
PLL Circuit for an external ISDN Line Clock Synchronization
1 Internal MOH - 13 Music resources
System Prompt storage, All country languages
Basic 4 AA Function and 4 VoIP channels on MPB can be added by License
Basic DSIU Included 6 DKTs and 6 SLTs
4 Status Indication LEDs
1 RS-232C serial port
1 Reset Button
