User's Manual

Product Technical Specification
Rev 3 Sep.17 18 41110251
Power Supply
The host provides power to the MC7475 through multiple power and ground pins
as summarized in Table 3-2.
The host must provide safe and continuous power at all times; the module does
not have an independent power supply, or protection circuits to guard against
electrical issues.
USB Interface
Important: Host support for USB 2.0 signals is required.
The device supports a USB 2.0 interface for communication between the host and
module.
The interface complies with the [7] Universal Serial Bus Specification, Rev 2.0,
and the host device must be designed to the same standards (subject to details
shown in Table 3-3 below). (Note: When designing the host device, careful PCB
layout practices must be followed.)
USB Throughput Performance
This device has been designed to achieve optimal performance and maximum
throughput using USB high-speed mode (USB 2.0). Although the device may
operate with a high speed host, throughput performance will be on an “as is”
e. The module must not be plugged into a port that supports PCI Express—the pin is used by a PCIE signal, which can cause the
module to be in reset state or occasionally reset.
f. Max voltage level when current < 100 mA.
Table 3-2: Power and Ground Specifications
Name Pins Specification Min Typ Max Units
VCC 2, 24, 39, 41, 52 Voltage range See Table 3-1 on page 14.
Ripple voltage - - 100 mV
pp
GND 4, 9, 15, 18, 21, 26,
27, 29, 34, 35, 37,
40, 43, 50
- - 0 - V
Table 3-3: USB Interfaces
Name Pin Description
USB 2.0 USB_D- 36 USB data negative
USB_D+ 38 USB data positive