fxla2203 Fairchild Semiconductor, fxla2203 Datasheet - Page 9

• Manufacturer Part Number: fxla2203
• Description: Fxla2203 Dual-mode, Dual-sim-card Level Translator
• Manufacturer: Fairchild Semiconductor

© 2010 Fairchild Semiconductor Corporation
FLXA2203 • Rev. 1.0.1
Application Information
Figure 8 illustrates an FXLA2203 used in a dual-mode /
dual-SIM application. The FXLA2203 does not contain
any internal LDOs. Instead, the FXLA2203 architecture
CH_Swap Truth Table
CH_Swap
between Host 1 or Host 2, and either SIM Card
according to Table 2 — Dual-Mode, Dual-SIM Truth
Table. Either host can swap SIM slots (130ns typical)
controls
simultaneous
Figure 8. Typical Dual-Mode Application
communication
Figure 9. CH_Swap
9
incorporates two low-R
routing existing Power Management Integrated Circuit
(PMIC) LDOs to individual SIM slot VCC pins.
with the assertion of the CH_Swap pin. This simple
solution is faster and less complicated than SPI or I
communication protocols.
ON
internal power switches for
www.fairchildsemi.com
2
C