CHAPTER
12
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© SAMSUNG Electronics Co., Ltd.
in slave mode. The data are received in master mode. This is called a ping-pong phenomenon.
The voltage of -48V DC is supplied to the Trans through the Poly switch. The Poly switch
cuts off currents once a short circuit is created in the line, and the Zener diode prevents
against external high voltage.
Figure 2.21 Default Configuration Diagram Between the Digital Phone and System
Figure 2.22 Data Transfer Format Diagram
M C U
DIGITAL TELEPHONE
(SLAVE)
x 8
DMC
DLI card
CODEC
Transmission
I.C(DASL)
Transmission
I.C(DASL)
PCM
HIGHWAY
SYSTEM
(MASTER)
2B + D(2 Wire)
TIME
SWITCH
CPU
B1 & BITS B2 & BITS
D 2b
B1 & BITS B2 & BITS
D 2b
SLAVE BURST
MASTER BURST
MASTER BURST
MASTER
DATA-FORMAT
(DLI Board)
Guard
Time
2 FRAMES(250
µ
s)
td
td + Guard Time
SLAVE
DATA-FORMAT
(Digital Phone)_
START BIT
SLAVE BURST
Summary of Contents for OFFICESERV 7100
Page 1: ...Ed 00 OfficeServ 7100 Service Manual ...
Page 33: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 1 15 ...
Page 189: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 3 Soldering Side ...
Page 195: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 9 5 7 TEPRI2 Board Part Side ...
Page 197: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 11 5 8 8COMBO Part Side ...
Page 199: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 13 5 9 16DLI2 Part Side ...
Page 201: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 15 5 10 MGI16 MGI32 Part Side ...
Page 203: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 17 5 11 16SLI2 16MWSLI Part Side ...
Page 205: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 19 5 12 8TRK Board Part Side ...
Page 207: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 21 5 13 PLIM Board Part Side ...