Mgi64/Mgi16 Board; Figure 2.24 Block Diagram Of Mgi64/Mgi16 Board - Samsung OFFICESERV 7100 Service Manual

2.5.12 MGI64/MGI16 Board

The MGI board is mounted on the universal slot of the OfficeServ 7100 system and enables
voice calls on the IP network. The MGI64 board is connected to Ethernet of 10/100 Mbps
and encodes or decodes voice data into G.711, G.723.1, G.729 of the ITU-T.
2.5.12.1 Block Diagram
The block diagram of the MGI64/MGI16 board is shown in the figure below:
MBD
MBD
DATA BUS
RS 232C
TERMINAL
Ethernet
10/1000 Mbp
© SAMSUNG Electronics Co., Ltd.
PCM Interface part
2.048 MHz x 2
MAIN Interface part
DPRAM, 512 b x 2
IDT71321LA35PF
CPU BUS
Flash, 512 KB, 8 Bit
SST39VF040 x 2
Flash, 8 MB, 16 bit
TE28F640-J3C120
SDRAM, 64 MB, 32 bit
K4S561632E-TC60 x 2
RS232C INTERFACE
38.4K UART
Ethernet, 10/100BaseT
AM79C875KC

Figure 2.24 Block Diagram of MGI64/MGI16 board

OfficeServ 7100 Service Manual
Glue Logic
BUFFER, Card ID,
EPLD, etc...
CPU & DSP
M82530L-14
(MGI16 M82511)
125 MHz FPBGA,
484PIN
Voice/FAX
Compressing part
G.723/G.729
Decoding Logic
LC4256V-75F256B
Reset Logic
DS1706
2-41