SDHC_CMD
T1023
SDHC_CLK
SDHC_WP
SDHC_CD
SDHC_DATA[0:3]
SD_CD
SD_WP
SD_CLK
SD_CMD
3.3 V or 1.8V
Switch
SD Memory Card Socket
CMD
CLK
WP
DAT[0:3]
CD
eMMC
CMD
CLK
DAT[0:3]
Figure 2-11. SD memory card/eMMC connection
2.17 GPIO interface
The table below lists the GPIO pin usage on the RDB platform.
Table 2-6. GPIO pin usage
GPIO
Input/Output
Signal name
Comment
GPIO1_14
output
GPIO1_14_eMMC_SEL_n
0: Select eMMC;
1: Select SD/MMC card
GPIO3_04
input
Board version identifying bit 1;
Rev B= 0, Rev C= 0, Rev D=
1, Rev E= 1
GPIO3_05
input
Board version identifying bit 0;
Rev B= 0, Rev C= 1, Rev D=
0, Rev E= 1
PCIe 2 card wake
GPIO3_02
GPIO3_2_WAKE_L
2.18 Interrupts
The figure below shows the external interrupts to the T1023.
Chapter 2 Architecture
QorIQ T1023 Reference Design Board User Guide, Rev. 0, 08/2015
Freescale Semiconductor, Inc.
23
Summary of Contents for QorIQ T1023
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Page 2: ...QorIQ T1023 Reference Design Board User Guide Rev 0 08 2015 2 Freescale Semiconductor Inc...
Page 34: ...QorIQ T1023 Reference Design Board User Guide Rev 0 08 2015 34 Freescale Semiconductor Inc...
