Xilinx ZC702 User Manual

ZC702 Board User Guide www.xilinx.com 26
UG850 (v1.7) March 27, 2019
Feature Descriptions
SD Card Interface
[Figure 1-2, callout 5]
The ZC702 board includes a secure digital input/output (SDIO) interface to provide
user-logic access to general purpose nonvolatile SDIO memory cards and peripherals.
Information for the SD I/O card specification can be found at the SanDisk Corporation
[Ref 16] or SD Association [Ref 17] websites.
The SDIO signals are connected to XC7Z020 SoC PS bank 501 which has its VCCMIO set to
1.8V. A TXB02612 SDIO port expander with voltage-level translation (U61) is used between
the XC7Z020 SoC and the SD card connector (J64).
Figure 1-8 shows the connections of the SD card interface on the ZC702 board.
X-Ref Target - Figure 1-8
Figure 1-8: SD Card Interface
UG850_c1_08_032719
GND
GND
GND
IOGND2
GNDTAB1
GNDTAB2
GNDTAB3
CMD
VSS1
CLK
VSS2
DAT0
DAT1
DAT2
CD_DAT3
DETECT
VDD
PROTECT
DETECT_PROTECT
GNDTAB4
IOGND1
SDIO_SDWP8
SDIO_SDDET8
1
2
5%
1/10Ω
4.7K
R380
2
1
R381
4.7K
1/10Ω
5%
VCCMIO_PS
1
2
5%
1/10Ω
4.7K
R321
18
13
14
15
2
3
5
6
7
8
9
1
10
4
11
12
16
17
J64
67840-8001
22 SDIO_CLK
VCC3V3
1
2
C27
0.1μF
25V
X5R
SDIO_DAT222
SDIO_DAT022
22 SDIO_DAT1
SDIO_CD_DAT322
22 SDIO_CMD
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Xilinx ZC702 Specifications

General

Brand	Xilinx
Model	ZC702
Category	Motherboard
Language	English