Micro-Sd Card Interface - LG -A290 Service Manual

3.9 Micro-SD Card Interface

MMC_DATA2
MMC_DATA3
MMC_CMD
MMC_CLK
MMC_DATA0
MMC_DATA1
VA209 VA210 VA211 VA212
The controller fully supports the Memory Stick bus protocol as defined in Format Specification version .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 .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.
LGE Internal Use Only
VIO
47K R221
C265
1u
VMMC
18
ST2
17
ST1
1
S4
2
T1
3
T2
4
T3
5
T4
6
T5
7
T6
8
T7
9
T8
10
S8
C270 C235
VA213 VA214
1u 1u
VSIM2
R246
DNI
Figure 3.9.1 Micro-SD Card Interface
T_FLASH_SIM_COMBO
MMC_DET
VA222
C261
VA223
DNI
- 41 - Copyright © 01 LG Electronics. Inc. All right reserved.
3. TECHNICAL BRIEF
VSIM2
C234
1u
SIM2_RST
SIM2_CLK
SIM2_DATA
VA221
Only for training and service purposes