HWS419

!

!

July 2004 V1

Hexawave Inc. 2 Prosperity Road II, Science Park, Hsinchu, Taiwan. TEL 886-3-578-5100 FAX 886-3-577-0512

http://www.hw.com.tw

All specifications are subject to change without notice.

Application Information (Continued)

Simplified Application Block Diagram Between HWS419 and WLAN 802.11 a/b/g RFIC

Note:

1. VC1 and VC3 are used for antenna selection, while VC2 and VC4 are used for band selection.

2. LB_RX stands for low-band(2.5GHz band) receiving port and HB_TX stands for high-band(5.85GHz

band) transmitting port.

3. RF paths between switch and RFIC may include amplifiers, filters, and baluns.

Logic Table for Switch On-Path

VC1

(AntennaSelect)

VC3

(AntennaSelectInv)

VC2

(BandSelect)

VC4

(BandSelectInv)

ANT1

ANT2

0

1

1

0

RF1(HB_RX)

RF4(HB_TX)

1

0

1

0

RF4(HB_TX)

RF1(HB_RX)

0

1

0

1

RF2(LB_RX)

RF3(LB_TX)

1

0

0

1

RF3(LB_TX)

RF2(LB_RX)

ANT2

LB_RX

HWS419 DP4T Switch

ANT1

HB_RX

LB_TX

HB_TX

VC1 VC3

VC4

VC2

RF1

RF3

RF4

WLAN 802.11a/b/g

RFIC

Antenna

Select

Band

Select

RF2

Antenna

SelectInv

Band

SelectInv