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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
3.3.3 SIM interface
SIM interface scheme is shown in below.
SIM_IO, SIM_CLK, SIM_RST, SIM_PWRCTRL ports are used to communicate DBB via ABB with plugged sim card and
the LDO (VRSIM) in ABB enables operate 1.8V to 2.5V to search SIM card
<Fig.9> SIM Interface
SIM_CLK
: SIM Card reference clock
SIM_PWCTRL
: SIM Card power activation
SIM_RST
: SIM Card async/sync reset
SIM_IO
: SIM Card bi-directional data line
VRUSIM(Power supply VCC)
: 3 V
±
10% (class B) or 1.8 V
±
10% (class C)
Misc_ext_irq
: USIM card presence detection (USIM_CD) purposes.
3.3.4 UART Interface
KM710d has Three UART Drivers as follow :
- UART1 : USB
- UART2 : ETM, Calibration - UART3 : AT command, Fax_modem, Bluetooth
Resource
Name
Description
USB_DP
DP
Data
USB_DM
DM
Data
USB_PWR
POWER
USB_POWER
VBUS
VBUS
USB_Detect
DEBUG_RX
RX
Receive Data(UART2)
DEBUG_TX
TX
Transmit Data(UART2)
UART3_RXD
UART3_RXD
Receive Data
UART3_TXD
UART3_TXD
Transmit Data
UART3_RTS
UART3_RTS
Request To Send
UART3_CTS
UART3_CTS
Clear To Send
UART1(USB)
UART2 (ETM)
UART3 (Bluetooth)
<Table.2> UART Interface Spec