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The figure below shows the interface between the SPI flash and the 7Z045 AP PSoC
Figure 7
– 7Z045 QSPI Flash Interface
To configure the 7Z045 using the QSPI flash interface the configuration mode for the 7Z045 must
be set to QSPI mode. This is accomplished by setting the configuration mode switches to the proper
setting. The configuration mode switch is SW5 on the Mini-Module. It is a five position slide switch.
Setting SW5 to SW[5:0] = x001x
will put the 7Z045 in QSPI configuration mode at power-on. See
Section 2.8.1 for more details on the various 7Z045 configuration modes.
2.3.4
I
2
C EEPROM Interface
The Zynq 7Z045 Mini-Module Plus Development Board has an on-board 8 KB I
2
C EEPROM for
additional data storage. A Micron M24C08-R is the device used. The I
2
C EEPROM is on the shared
I
2
C bus with the I
2
C real time clock (RTC). The table below shows the pin connections to the 7Z045.
Table 8
– I
2
C EEPROM Pin Assignments
2.3.5
Micro SD Card Interface
The Zynq 7Z045 Mini-Module Plus Development Board implements a micro SD card interface
that can be used for boot configuration as well as additional data storage. The module ships
with a 4 GB micro SD card installed into the card slot at J1 on the bottom side of the board.
When boot code is stored on the micro SD card, configuration of the PS can be done by setting
the configuration mode switch SW5 to the proper setting. The proper setting for configuring
from the micro SD card is
SW[5:0]=x011x
. See Section 2.8.1 for more details on the various
7Z045 configuration modes.
Net Name
7Z045 Pin #
I
2
C_SDA
F19
I
2
C_SCL
A19
