Peiker acustic GmbH V1233-0 用户手册
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Seite 8
peiker acustic GmbH & Co. KG, Max-Planck-Straße 32, D-61381 Friedrichsdorf, Amtsgericht Bad Homburg HRA 1897
phG: peiker Verwaltungs GmbH, Vorsitzender der Geschäftsführung: Andreas Peiker, Geschäftsführer: Stephan Graf von der Schulenburg, Amtsgericht Bad Homburg 1369
Vorsitzender des Aufsichtsrates: Prof. Dr. Agilolf Lamperstorfer Ein Unternehmen der peiker Firmengruppe
2.9 Main Interfaces
2.9.1 USB
LTE-NAD-A has one USB2.0 OTG high speed (480MBit) compliant interface including the PHY. This IF
consists of four signals:
-
USB_HS_DP:
USB Data Plus signal
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USB_HS_DM
USB Data Minus signal
-
USB_HS_ID:
USB high-speed data - ID
-
MDM_VBUS_DET:
USB Voltage Supply
LTE-NAD-A has one USB3.0 high speed (480MBit) compliant interface including the PHY. This IF consists
of four signals:
-
MDM_USB_SS_RX_P:
USB 3.0 receive – plus
-
MDM_USB_SS_RX_M
USB 3.0 receive – minus
-
MDM_USB_SS_TX_P:
USB 3.0 transmit – plus
-
MDM_USB_SS_TX_M:
USB 3.0 transmit – minus
A dynamic reconfiguration between USB-Host or USB-Device is not foreseen. LTE-NAD-A can be
configured to USB-Host or USB-Device by insertion of a resistor on the USB_ID line.
2.9.2 SIM Interface
LTE-NAD-A has two SIM interfaces that are compatible for both 1.8V and 3V SIM Cards. Those IFs
consist of the following signals:
VREF_UIM1 / VREF_UIM2
UIM1_CLK / UIM2_CLK
UIM1_DETECT / UIM2_DETECT
UIM1_DATA / UIM2_DATA
UIM1_RESET / UIM2_RESET
The data rate of the SIM IF is up to 4 Mbps, so HW designers should take care of the length and routing
of the SIM IF to prevent potential EMC problems.
2.9.3 Power on
The signal PON_1 is used to switch on LTE-NAD-A. As PON_1 is pulled against VMAIN internally, it is
recommended to pull this input against GND using an open collector or open drain output only.
2.9.4 Reset
PMD_RESIN_N is used to reset LTE-NAD-A. As PMD_RES_IN is pulled against VMAIN internally, it is
recommended to pull this input against GND using an open collector or open drain output only.