TQ-Systems MBLS1012AL, Preliminary User'S Manual

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Preliminary User's Manual l MBLS1012AL UM 0001 l © 2019, TQ-Systems GmbH Page 20
4.2.14 WLAN
A USB host and I
2
C are provided for access to WLAN networks via an additional Mini PCIe slot (full-size). Half-size and full-size
cards are supported. Half-size cards can be mounted using solder nuts and corresponding screws/sleeves, whereby the space for
full-size cards is not blocked. Alternatively, half-size cards can be enlarged to full-size using adapters. The power supply is
implemented with 3.3 V and 1.5 V and must be activated separately on the port expander via VCC_WLAN_EN_1V5 and
VCC_WLAN_EN_3V3. The voltages provided for the WLAN card may be loaded with the maximum currents specified in Table 25.
The Mini PCIe slot has no connection to the PCIe bus of the TQMLS1012A. Communication with the host must be carried out via
USB or I 2 C. When using the I 2 C functionality, check in advance whether the I 2 C address used by the plug-in card is not yet used by
a peripheral on the MBLS1012AL or on the PCIe slot. See also Table 13. The wiring of pins 42, 44 and 46 is the same as for the Mini
PCIe interface. LED_WLAN_WL# is wired by default.
Table 24: Pinout WLAN module /Mini PCIe (USB) X3
Target pin / Net Pin name Pin Pin name Target pin / Net
NC WAKE# 1 2 +3.3Vaux V_3V3_WLAN
NC COEX1 3 4 GND GND
NC COEX1 5 6 +1.5V V_1V5_WLAN
NC CLKREQ# 7 8 UIM_PWR NC
GND GND 9 10 UIM_DATA NC
NC REFCLK– 11 12 UIM_CLK NC
NC 13 14 UIM_RESET NC
GND GND 15 16 UIM_SPU NC
Key notch
NC UIM_IC_DM 17 18 GND GND
NC UIM_IC_DP 19 20 W_DISABLE1# WLAN_DISABLE#, 4.7 kΩ Pull-Up
GND GND 21 22 PERST# WLAN_RST#
NC PERn0 23 24 +3.3Vaux V_3V3_WLAN
NC PERp0 25 26 GND GND
GND GND 27 28 +1.5V V_1V5_WLAN
GND GND 29 30 SMB_CLK I2C_3V3_SCL
NC PETn0 31 32 SMB_DATA I2C_3V3_SDA
NC PETp0 33 34 GND GND
GND GND 35 36 USB_D– USB_DN4_D–
GND GND 37 38 USB_D+ US
V_3V3_WLAN +3.3Vaux 39 40 GND GND
V_3V3_WLAN +3.3Vaux 41 42 LED_WWAN# LED V18 (optional)
GND GND 43 44 LED_WLAN# LED V18
NC Reserved 45 46 LED_WPAN# LED V18 (optional)
NC Reserved 47 48 +1.5V V_1V5_WLAN
NC Reserved 49 50 GND GND
NC W_DISABLE2# 51 52 +3.3Vaux V_3V3_WLAN
Table 25: Maximum permitted current consumption WLAN
Voltage Nominal value I
max
V_3V3_WLAN 3.3 V 1.1 A
V_1V5_WLAN 1.5 V 0.375 A
Illustration 21: Position of WLAN X3