參數(shù)資料
型號(hào): FXLA2203UMX
廠商: Fairchild Semiconductor
文件頁(yè)數(shù): 16/16頁(yè)
文件大?。?/td> 0K
描述: TRANSLATOR LEVEL DUAL 24UMLP
標(biāo)準(zhǔn)包裝: 5,000
應(yīng)用: 用戶(hù)標(biāo)識(shí)模塊(SIM)
電源電壓: 1.65 V ~ 3.6 V
封裝/外殼: 24-UMLP
供應(yīng)商設(shè)備封裝: 24-UMLP
包裝: 帶卷 (TR)
安裝類(lèi)型: 表面貼裝
2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FXLA2203 Rev. 1.0.5
9
FXLA2203
Dual-Mode,
Dual-SI
M-Card
Level
Translator
Application Information
Figure 9 illustrates an FXLA2203 used in a dual-mode /
dual-SIM application. The FXLA2203 does not contain
any internal LDOs. Instead, the FXLA2203 architecture
incorporates two low-RON internal power switches for
routing existing Power Management Integrated Circuit
(PMIC) LDOs to individual SIM slot VCC pins.
HOST 1
WCDMA
TDSCDMA
HOST 2
GSM
PMIC
LDO 1
PMIC
LDO 2
VCC H_1
VCC1
CLK_H_1
RST_H_2
CLK_H_2
I/O_H_2
RST_H_1
I/O_H_1
EN
CH_Swap
VCC2
VCC_H_2
VCC
1.8V / 3V
0.1F
VCC_Card1
VCC_ Card2
RST_2
CLK_2
I/O_2
CLK_1
RST_1
I/O_1
GND
SIM Slot 1
1.8V / 3V
SIM Slot 2
1.8V / 3V
0.1F
I/O
CLK
VCC
RST
CLK
I/O
VCC
GND
Control Can
Be Either Host
HOST PORT
CARD PORT
Figure 9. Typical Dual-Mode Application
CH_Swap Truth Table
CH_Swap controls simultaneous communication 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) with the assertion of the
CH_Swap pin. This simple solution is faster and less
complicated than SPI or I
2C communication protocols.
Figure 10. CH_Swap
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