Samsung OFFICESERV 7100 Service Manual page 76

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2.5.12.2 Main Features
Main features of MGI64/MGI16 are as follows:
CODEC M82530 (MAIN CPU & DSP)
Up to 64 channels can be accommodated
In case of MGI16, codec is M82511 and there are 16 channels.
Codec and host are implemented in the chip.
Codec is made by MindSpeed.
64 independent voice channels of each chip(MGI16 supports 16 channels.)
Field-upgradeable Functionality
Roburst Bad Frame Interpolation(BFI)
G.165/G.168 Adaptive Echo Canceller
Toll quality voice that decreases the bit rate to 3.2 kbps on the average through silence
suppression
TIA 464A DTMF detection/generation
MF detection/generation
Parallel hist processor interface
Tone signal that the host can program
PCM interface that can be configured: PCM highway or parallel interface
On-chip PCM highway interface(host configuration time slot allocation and selectable
G.711 μ-law/A-law PCM interface)
Gain control
RS-232C Interface
UART0 in M82530
Maximum 38.4 kbps UART
Debugging, DSP program update and test
MP40 Interface
Two FIFO IDT7201LA50Js, which are DRAM
2 Kbytes with Tx and Rx
Card ID: 7D
Power
Through 5 V, the circuit for supplying 3.3 V is implemented.
Through 3.3 V, the circuit for supplying 1.2 V, the power for CPU core is implemented.
The connection between 5 V and 3.3 V devices, insert the dedicated buffer to secure
reliability.
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