User's Manual

Cinterion
®
PLAS9-X Hardware Interface Overview
2 Interface Characteristics
22
 PLAS9-X_HIO_v00.044 2017-09-19
Confidential / Preliminary
Page 10 of 39
2 Interface Characteristics
PLAS9-X is equipped with an SMT application interface that connects to the external applica-
tion. The SMT application interface incorporates the various application interfaces as well as
the RF antenna interface.
2.1 Application Interface
2.1.1 USB Interface
PLAS9-X supports a USB 3.0 Super Speed (5Gbps) device interface, and alternatively a
USB 2.0 device interface that is High Speed and Full Speed compatible. The USB interface is
primarily intended for use as command and data interface, and for downloading firmware
1
.
The USB host is responsible for supplying the VUSB_IN line. This line is for voltage detection
only. The USB part (driver and transceiver) is supplied by means of BATT+. This is because
PLAS9-X is designed as a self-powered device compliant with the “Universal Serial Bus Spec-
ification Revision 3.0”
2
.
Figure 2: USB circuit
To properly connect the module's USB interface to the external application, a USB 3.0 or 2.0
compatible connector and cable or hardware design is required. Furthermore, the USB modem
driver distributed with PLAS9-X needs to be installed.
1. Note: For firmware download, the module enumerates new as a USB 2.0 device. Also, it is not possible
to use the USB 2.0 High Speed device mode and the USB 3.0 Super speed device mode simultaneously.
2. The specification is ready for download on http://www.usb.org/developers/docs/
VREG (3V075)
BATT+
USB_DP
3)
lin. reg.
GND
Module
Detection only
VUSB_IN
2)
USB part
1)
1)
All serial (including R
S
) and pull-up resistors for data lines are implemented.
USB_DN
3)
3)
If the USB interface is operated in High Speed mode (480MHz), it is recommended to take special care routing the data
lines USB_DP and USB_DN. Application layout should in this case implement a differential impedance of 90 ohms for
proper signal integrity.
VBUS
1µF
2)
Since VUSB_IN is used for detection only it is recommended not to add any further blocking capacitors on
the VUSB_IN line.
Host wakeup
RING0
USB_SSRX_N
USB_SSRX_P
USB_SSTX_N
USB_SSTX_P
USB_SS
_PHY
USB_HS
_PHY
USB 2.0
Controller
USB 3.0
Controller
2.0
2.0
3.0
100nF
100nF
SMT