Version 1.0
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SPI FLASH MEMORY UPPER
(256Mb)
MT25QU256ABAIEW7-0SIT
Bank 500
SPI FLASH MEMORY LOWER
(256Mb)
MT25QU256ABAIEW7-0SIT
QSPI1_IO[:3]
QSPI0_IO[0:3]
QSPI1_SCLK
QSPI0_SCLK
QSPI0_SS_B
QSPI1_SS_B
Figure 4
– Dual QSPI Block Diagram
Table 2
– Quad-SPI Flash Pin Assignment and Definitions
NOTE: (U2 or U3 indicates QSPI Device Reference Designator)
2.2.3
eMMC x8 Flash (Multi-Media Controller)
The UltraZed-EG SOM features a Micron MTFC8GAKAJCN-4M IT eMMC Multi Media Controller and NAND
Flash IC. The eMMC is used to provide non-volatile user data storage and/or primary or secondary boot
storage.
The relevant device attributes are:
8GB (default) - Optional densities available via customization
Industrial temperature range (-40C to +85C)
8-bit data interface
The Zynq Ult MPSoC peripheral used to control the eMMC flash device is named
SD0
. The eMMC
flash device can be operated up to 52MHz and is physically connected to the PS of the Zynq Ult
MPSoC via Bank 500. The eMMC I/O has direct connections to the Zynq Ult MIO through the
PS_MIO [13:22] pins.
The UltraZed-EG SOM end-user is capable of issuing a soft reset,
P0_EMMC0_RST_N,
to the eMMC
flash device via an on board two-wire serial interface. The active low reset is assigned to Port 0 of the
Texas Instruments TCA9534 I/O expander. The I/O expander is attached to an I2C peripheral on the Zynq
Signal Name
Description
MPSoC Pin
MIO
Quad-SPI Pin
MIO0_QSPI0_SCLK
Lower QSPI Serial Clock
V10
MIO 0
U2-6
MIO1_QSPI0_IO1
Lower QSPI Data [1]
W11
MIO 1
U2-2
MIO2_QSPI0_IO2
Lower QSPI Data [2]
V11
MIO 2
U2-3
MIO3_QSPI0_IO3
Lower QSPI Data [3]
W9
MIO_3
U2-7
MIO4_QSPI0_IO0
Lower QSPI Data [0]
Y9
MIO_4
U2-5
MIO5_QSPI0_SS_B
Lower QSPI Select
AA10
MIO_5
U2-1
FLOAT (NC)
Loopback Clock
Y10
MIO_6
-
MIO7_QSPI1_SS_B
Upper QSPI Select
Y11
MIO_7
U3-1
MIO8_QSPI1_IO0
Upper QSPI Data [0]
AC10
MIO_8
U3-5
MIO9_QSPI1_IO1
Upper QSPI Data [1]
AB10
MIO_9
U3-2
MIO10_QSPI1_IO2
Upper QSPI Data [2]
W12
MIO_10
U3-3
MIO11_QSPI1_IO3
Upper QSPI Data [3]
AE10
MIO_11
U3-7
MIO12_QSPI1_SCLK
Upper QSPI Serial Clock
AB11
MIO_12
U3-6