Intel E3815 FH8065301567411 Data Sheet
Product codes
FH8065301567411
Storage Control Cluster (eMMC, SDIO, SD Card)
Intel
®
Atom™ Processor E3800 Product Family
Datasheet
1745
Table 179. eMMC Signals
Signal Name
Direction
Power
Description
MMC1_CLK
O
V1P8S
eMMC Clock
The frequency may vary between 400 kHz and 200 MHz.
The frequency may vary between 400 kHz and 200 MHz.
MMC1_D[7:0]
I/O
V1P8S
eMMC Port Data bits 0
to 7
Bidirectional port used to transfer data to and from eMMC device.
By default, after power up or reset, only D[0] is used for data transfer. A
wider data bus can be configured for data transfer, using either D[0]-
D[3] or D[0]-D[7], by the MultiMedia Card controller.
The MultiMedia Card includes internal pull-ups for data lines D[1]-D[7].
Immediately after entering the 4-bit mode, the card disconnects the
internal pull ups of lines D[1], D[2], and D[3]. Correspondingly,
immediately after entering to the 8-bit mode the card disconnects the
By default, after power up or reset, only D[0] is used for data transfer. A
wider data bus can be configured for data transfer, using either D[0]-
D[3] or D[0]-D[7], by the MultiMedia Card controller.
The MultiMedia Card includes internal pull-ups for data lines D[1]-D[7].
Immediately after entering the 4-bit mode, the card disconnects the
internal pull ups of lines D[1], D[2], and D[3]. Correspondingly,
immediately after entering to the 8-bit mode the card disconnects the
internal pull-ups of lines D[1]-D[7].
MMC1_CMD
I/O
V1P8S
eMMC Port Command
This signal is used for card initialization and transfer of commands. It has
two modes—open-drain for initialization, and push-pull for fast command
transfer.
This signal is used for card initialization and transfer of commands. It has
two modes—open-drain for initialization, and push-pull for fast command
transfer.
MMC1_RCOMP
-
eMMC RCOMP
This signal is used for pre-driver slew rate compensation.
This signal is used for pre-driver slew rate compensation.
MMC1_RST#
O
V1P8S
eMMC Reset Signals
Active low to reset.
Active low to reset.
Table 180. SDIO Signals
Signal Name
Direction
Power
Description
SD2_CLK
O
V1P8S
SDIO Clock
The frequency may vary between 24 and 50MHz.
The frequency may vary between 24 and 50MHz.
SD2_D[2:0]
I/O
V1P8S
SDIO Port Data bits 0 to 2
Bidirectional port used to transfer data to and from SDIO device.
By default, after power up or reset, only D[0] is used for data transfer. A
wider data bus can be configured for data transfer, using D[0]-D[3].
Bidirectional port used to transfer data to and from SDIO device.
By default, after power up or reset, only D[0] is used for data transfer. A
wider data bus can be configured for data transfer, using D[0]-D[3].
SD2_D[3]_CD#
I/O
V1P8S
SDIO Port Data bit 3
Bidirectional port used to transfer data to and from the SDIO device.
Also,
Also,
Card Detect.
Active low when device is present.
SD2_CMD
I/O
V1P8S
SDIO Port Command
This signal is used for card initialization and transfer of commands. It has
two modes—open-drain for initialization, and push-pull for fast command
transfer.
This signal is used for card initialization and transfer of commands. It has
two modes—open-drain for initialization, and push-pull for fast command
transfer.