Micro-Sd Card Interface - LG -A155 Service Manual

3.9 Micro-SD Card Interface

The controller fully supports the Memory Stick bus protocol as defined in Format Specification version
2.0 of Memory Stick Standard (Memory Stick PRO) and the SD Memory Card bus protocol as defined in
SD Memory Card Specification Part 1 Physical Layer Specification version 2.0 as well as the Multi Media
Card(MMC) bus protocol as defined in MMC system specification version 4.1.
bus protocol is backward compatible to MMC bus protocol, the controller is capable of working well as
the host on MMC bus under control of proper firmware. Furthermore, the controller also support SDIO
card specification version 1.0 partially. However, the controller can only be configured as either the
host controller.
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Only for training and service purposes
VSIM1
VMMC
MMC_DATA1
MMC_DATA0
MMC_CLK
MMC_CMD
MMC_DATA3
MMC_DATA2
MMC_DET
C503 C502
4.7u 1u
Figure 3.9.1 Micro-SD Card Interface
3. TECHNICAL BRIEF
VCC_VOLTAGE
S1
DAT1
T8
DAT0
T7
VSS_2
T6
CLK2
T5
VDD
T4
S500
CMD
T3
CD_DAT3_2
T2
DAT2
T1
GND
S5
DETECT
ST1
COMMON
ST2
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3. TECHNICAL BRIEF
Since SD memory Card
LGE Internal Use Only