Only For Training And Service Purposes - LG KC910 Service Manual

3. TECHNICAL BRIEF
3.6 7 WLAN/Bluetooth/FM (WYSBNBGX6)
The KC910 device provides the highest level of integration for a mobile wireless system, with
integrated IEEE802. 11 b/g(MAC/baseband/radio), Bluetooth 2.0, and FM reveiver. The WYSBNBGX6
that is included of BCM4325 solution is supported three kinds of functions. It is the one antenna
structure which is supported of WLAN/Bluetooth in 2.4GHz band.
WLAN
The KC910 supports single-band 2.4GHz IEEE802.11b/g standardization. The WLAN module which is
consisted of the BCM4325 single chip device provides for the highest level of integration for a mobile
or handheld wireless system, with integrated IEEE802.11TM b/g (MAC/baseband/radio). The
BCM4325's integrated CMOS WLAN 2.4GHz power amplifier provide sufficient output power to meet
the need of most WLAN devices. The interface between MSM6280 and WLAN module is the standard
interfaces SDIO v1.2 (4-bit and 1-bit).
Figure1.9 shows the WLAN system architecture in the KC910.
MSM6280
VREG_MSMP_2.7V
WLAN_CMD
WLAN_CL
WLAN_SDIO[3:0]
WLAN_RESET_N
GPIO
WLAN_HOST_WAKEUP
GPIO
WLAN_REG_ON
GPIO
BT_REG_ON
GPIO
LGE Internal Use Only
BCM4325
TX WLBG
SW WL TX
(WYSBNBGX6)
SW WL BT RX
RX BG
EXT_LNA_GAI
+VPWR
VDD3_3
MIC2238_AA
VDD1_2
YML
inverter
[Figure 1.10] WLAN system architecture
- 34 -
DEA252450B
FILTER
MASW-
008955
Ext. LAN
MGA-645T6
EXT LNA IN
TCXO
CLK_REQ
R1114D281D
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

SLEEP_CLK
PM6658
32.768KHz
+VPWR