Tegra 200 Series Developer Board User Guide

4.8.2 eMMC Device Connections

The SD/MMC interface can support a variety of flash memory devices. The Tegra 200 Series Developer Board uses a combination 4-bit SD/MMC and 8-bit MMC socket to support either standard SD/MMC cards, or proprietary modules with eMMC (embedded MMC) or other compatible devices for storage and possibly boot options. One available module that can be used with this socket supports eMMC. The example in Figure 21 shows a connection example that will work with the eMMC module as both the boot and mass storage device.

Figure 21. Tegra 200 Series Developer Board Reference design 4/8-bit “Captive” SD/MMC Card Socket Connection Example

VDDIO_NAND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tegra

Ω47K

 

Ω47K

 

Ω47K

 

Ω47K

 

Ω10K

 

Ω47K

 

Ω47K

 

 

 

 

 

 

 

 

 

 

 

 

 

0.1uf

Ω47K

Ω47K

GND_EMI2

GMI_AD24 GMI_AD25 GMI_AD22 GMI_AD23

HSMMC_DAT4

HSMMC_DAT5

HSMMC_DAT2

HSMMC_DAT3

D4

D5

D2

D3

GMI_DPD

GMI_CS5_N

HSMMC_CMD

HSMMC_CLK

CMD

GND

VDD

CLK

GND

GMI_AD20

HSMMC_DAT0

HSMMC_DAT1

D0

D1

GMI_AD21 GMI_AD26 GMI_AD27

HSMMC_DAT6

HSMMC_DAT7

The Tegra 200 Series Developer Board uses this socket to as an internal means to support assorted boot/storage devices including eMMC. This header is included to provide a core supply to an eMMC module. Not needed if eMMC or other device directly on-board

eMMC Core (2.85V)

D6

D7

D2

D3

CMD

GND

 

VDD

0.1uf

CLK

GND

 

 

D0

 

D1

GMI_AD10 GMI_AD11

GPIO_PH2 (HSMMC_CD_N)

GPIO_PH3 (HSMMC_WP)

C_DETECT_N

WP_N

GND_EMI2

VDDIO_NAND 3.3V

DG-04927-001_v01

Advance Information – Subject to Change

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