User's Manual
Table Of Contents
- Operating Conditions
- Features
- WLAN
- Bluetooth (Optional)
- Memory Interfaces
- Communication Interfaces
- Audio and Graphics Interface
- Input/Output
- Applications
- Table of Contents
- Most Current Data Sheet
- Errata
- Customer Notification System
- 1.0 System Overview
- 2.0 CY920 Board Layout and Features
- 3.0 Application Guidelines
- 4.0 Wi-Fi Specification
- 5.0 Bluetooth Specifications
- 6.0 Packaging Information
- 7.0 Electrical Characteristics
- 8.0 Regulatory Compliance and Quality
- 9.0 Ordering Guide
- Appendix A: Certification Notices
- Federal Communications Commission Interference Statement
- Labeling Requirements
- RF Exposure Warning
- Information for the OEMs or Integrators
- Information to be Supplied to the End User by the OEM or Integrator
- Japan
- Canada, Industry Canada (IC) Notices
- RF Exposure Information
- Canada, avis d'Industry Canada (IC)
- Informations concernant l'exposition aux fréquences radio (RF)
- Appendix B: Revision History
- The Microchip Web Site
- Customer Change Notification Service
- Customer Support
CY920
DS60001270C-page 12 Preliminary © 2014 Microchip Technology Inc.
TABLE 1-10: CONTROL
TABLE 1-11: ETHERNET
TABLE 1-12: USB
Signal Type Description
MII_TXD2 I Factory Reset, GPIO-08. An active-high input with internal pull-down. Pull to
GND with a 10 k Ω resistor, unless return to factory settings from a hardware
control is needed. Generally, return to factory settings is controlled from the Host
controller through SPI register. This pin is monitored only during the boot up
process.
MII_TXD3
I Infrared sensor input, GPIO-09. A Schmitt Trigger input which can handle inputs
with slow slopes. It is used for aDMP firmware builds for infrared remote control
sensor output connection to DM920. For applications with a Host controller, pull
this pin to +3.3V through a 10 k Ω resistor.
I2C_SDA, I2C_SCL I/O No internal pull-ups, use maximum 4.7 kΩ pull-up resistor on each pin to +3.3V.
The maximum frequency is 400 kHz.
NRESET I Low-active input to reset the module. This signal must be driven by an external
Reset generator or by a GPIO output from a Host controller.
See Section 3.0 “Application Guidelines” for the timing requirements of
NRESET signal. The CY920 module includes internal 10K pull-up resistor to
+3.3V.
Legend: O = Output I /O = Input /Output I = Input P = Power
Signal Type Description
ETH_RXN, ETH_RXP,
ETH_TXN ETH_TXP
M Ethernet signals between the PHY on the module and the external magnetics
(transformer). The maximum bit rate is 100 Mbps.
ETH_LED_SPEED,
ETH_LED_ACT
O • 3.3V push-pull outputs from PHY (max. ±12 mA) to drive the Ethernet LEDs
• 100 Mbps speed mode and activity are indicated by the outputs being low
• Connect ETH_LED_SPEED to LED through 330Ω resistor to +3.3V
• Connect ETH_LED_ACT to LED through 330Ω resistor to 0V
SPF1 O Ethernet PHY Reset signal, GPIO-17. Do not connect if module Ethernet is
used. If Ethernet is not available on the module, it can be used as a GPIO.
Legend: O = Output I /O = Input /Output I = Input P = Power
Signal Type Description
USB_OTG_DN,
USB_OTG_DP
M USB data signals. It is usually connected to the type A connector, USB switch,
iPod dock connector, or Lightning connector. Maximum bit rate is high-speed USB
at 480 Mbps.
USB_VBUS M Analog input for monitoring the USB type A connector power. Connect to the +5V
power which is driving the USB type A connector power pins. If this pin drops
below 4.6V, then the DM920 module will drive the USB_PWR_EN signal low to
control an external power MOSFET to disconnect +5V power from the USB type
A connector.
USB_PWR_EN O Logic output to control an external MOSFET, that is in series with the USB type A
connector power.
USB_ID I Determines whether the USB port is USB Host or USB device. Pull low for the
Host and pull high for the device.
Legend: O = Output I /O = Input /Output I = Input P = Power