TQ-Systems MBLX2160A, Руководство пользователя

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User's Manual l MBLX2160A UM 0101 l © 2022, TQ-Systems GmbH Page 28
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PCIe ×8, X37:
o
×8 via SerDes #3 with muxing 2
o
×4 via SerDes #3 with muxing 3
3.9.2 Mini PCIe
The MBLX2160A provides two Mini PCIe slots, each with one PCIe lane (×1) for full-size cards (50.95 mm × 30 mm).
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mPCIe ×1, X16 plus SIM card holder
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mPCIe ×1, X17
Any standard compliant Mini PCIe card can be used.
As described in chapter 3.5.1, these are available at SerDes #2 with muxing 7 and 11.
Figure 23: Position of mPCIe slots and SIM card holder
3.9.3 SD card
The SD card socket on the MBLX2160A is connected via a 4-bit data interface to the SDHC1 controller of the TQMLX2160A.
The SD card is supplied with 3.3V. This voltage is generated by the module and is toggled at each reset. Card Detect is supported.
The I/O voltage can be dynamically switched from 3.3V to 1.8V at runtime via SDHC1_DATA4. High-speed mode is supported.
Table 17: Pinout SD card, X44
Pin Signal Remark
1 SDHC1_DATA2_R 10 kΩ PU to 3.3 V + ESD protection
2 SDHC1_DATA3_R 10 kΩ PU to 3.3 V + ESD protection
3 SDHC1_CMD_R 10 kΩ PU to 3.3 V + ESD protection
4 VCC3V3 VCC3V3_LX_OUT
5 SDHC1_CLK ESD protection
6 DGND –
7 SDHC1_DATA0_R 10 kΩ PU to 3.3 V + ESD protection
8 SDHC1_DATA1_R 10 kΩ PU to 3.3 V + ESD protection
SW1 SDHC1_CD# 10 kΩ PU to 1.8 V + ESD protection
SW2 DGND –
M1 … M4 SHIELD Shield
Note: LX2160A Erratum A-011552
Due to CPU Erratum A-011552 a SD Card level converter must be added to the SDHC interface.
The adapter board MBLX2160A-SDMOD is part of the shipment of the MBLX2160A and contains the
level converter and the SD card connector.