LG A395 - Micro-SD Card Interface

3. TECHNICAL BRIEF
- 41 -
Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
/ 131
3. TECHNICAL BRIEF
3.8 Micro-SD Card Interface
Figure 3.8.1 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. Since SD memory Card 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.
42
3.8 Micro-SD Card Interface
Figure 3.8.1 Micro-SD Card Interface
C235
1u
VIO_2V8
R221
1M
VMMC_3V3
C270 1u
J301
1210
119
54
63
72
81
DAT2
DAT1
CD/DAT3 DAT0
CMD VSS
VDD CLK
GND1 POL
GND2 DET
C265
1u
VA324 VA325 VA326 VA321 VA322 VA323
MSD_D[1]
MSD_D[0]
MSD_D[3]
MSD_CMD
MSD_CLK
MSD_D[2]
MSD_DET_N
(7/3) R221 : 1Mohm
Changed (10/30)
Changed (12/29)