Wbs24 (Basic); Figure 1.3 Block Diagram Of Wbs24 Wbs24 (Combo) - Samsung OfficeServ 500 Service Manual

CHAPTER 1.Overview
3.3.5 WBS24 (Combo) Block
The block diagram of WBS24(Combo) and functions for each block are as follows.
Ethernet
10/100T
RJ-45
RJ-45
DC/DC Power
-48V
RJ-45
2048NHz
OSC
3.4

WBS24 (Basic)

3.4.1 Overview
The WBS24(Basic) is the AP(Access Point) for using the wireless LAN service.
3.4.2 Major Functions
The major functions of WBS24(Basic) are as follows :
Provides the wireless RF interface that meets IEEE 802.11b, the wireless LAN
standard.
Provides the wired LAN interface that meets IEEE 802.3, the wired LAN
standard.
Provides voice communication through OfficeServ 500 System using a Voice
over WLAN phone.
Provides a wireless data service to data terminals that have the wireless LAN
interface.
Separates the wirelessly received voice and data from each other and transmits
them to OfficeServ 500 System and LAN.(If a voice message(signal) is received,
it is transmitted to OfficeServ 500 System. If a data message(signal) is received,
it is transmitted to LAN.)
Provides the compression and decompression of PCM voice data.
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UART
DASL_Int.
Magnetic
Reset
Ethernet I/F
25MHz Xtal
Voltage
3.3V
Regular
Input : 3.3V
SIO
Output : 1.8V
RS232C
1.8V
(Remote)
5.0V
-48/+5, +3.3
UART
(D_Ch)
PCM I/F
DASL
DASL.Int
20MHz Xtal

Figure 1.3 Block Diagram of WBS24 WBS24 (Combo)

OfficeServ 500 Wireless LAN Service Manual/Ed.00
DSP_Int
Embedded
CPU
PCMCIA I/F(EPD)
(NetARM
Core *2)
EPB BUS
SDRAM
8bits
BUS
32bits
SDRAM Flash ROM
16M byte 4M byte
DSP_Int(To Host)
HPI 8bits
DSP
BUS 16bits
- Audio Codec
Reset
- Echo Cancellation
External
Antenna
- Diversity
3.3V or 5.0V
- Gain : 2dBi
PCMCIA
- Dipole
Power
Controller
WLAN NIC
(3.3V/5V Auto
CARD
Switch)
(802.11b)
MAC/BB/Ext.
LED
Ant.
Control
UART
Controller
SRAM
Reset
Reset Control
64K word
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