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PDF USB5742 Data sheet ( Hoja de datos )

Número de pieza USB5742
Descripción 2-Port SS/HS USB Controller Hub
Fabricantes Microchip 
Logotipo Microchip Logotipo



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USB5742
2-Port SS/HS USB Controller Hub
Highlights
• USB Hub Feature Controller IC with 2 USB 3.1
Gen 1 / USB 2.0 downstream ports
• USB-IF Battery Charger revision 1.2 support on
up & downstream ports (DCP, CDP, SDP)
• USB Link Power Management (LPM) support
• Enhanced OEM configuration options available
through either OTP or SPI ROM
• Available in 56-pin (7 x 7 mm) VQFN lead-free,
RoHS compliant package
• Commercial and industrial grade temperature
support
• Configuration Straps: Predefined configuration of
system level functions
Target Applications
• Standalone USB Hubs
• Laptop Docks
• PC Motherboards
• PC Monitor Docks
• Multi-function USB 3.1 Gen 1 Peripherals
Key Benefits
• USB 3.1 Gen 1 compliant 5 Gbps, 480 Mbps,
12 Mbps and 1.5 Mbps operation
- 5 V tolerant USB 2.0 pins
- 1.32 V tolerant USB 3.1 Gen 1 pins
- Integrated termination & pull-up/pull-down resistors
• Supports per port battery charging of most popu-
lar battery powered devices
- USB-IF Battery Charging rev. 1.2 support
(DCP, CDP, SDP)
- Appleportable product charger emulation
- Chinese YD/T 1591-2006 charger emulation
- Chinese YD/T 1591-2009 charger emulation
- European Union universal mobile charger support
- Support for Microchip USC100x family of battery
charging controllers
- Supports additional portable devices
• Smart port controller operation
- Firmware handling of companion port controllers
• On-chip microcontroller
- Manages I/Os, VBUS, and other signals
• 8 KB RAM, 64 KB ROM
• 8 KB One Time Programmable (OTP) ROM
- Includes on-chip charge pump
• Configuration programming via OTP ROM, SPI
ROM, or SMBus
• PortSwap
- Configurable differential intro-pair signal swapping
• PHYBoost
- Programmable USB transceiver drive strength for
recovering signal integrity
• VariSense
- Programmable USB receiver sensitivity
• Compatible with Microsoft Windows 8, 7, XP,
Apple OS X 10.4+, and Linux hub drivers
• Optimized for low-power operation and
low thermal dissipation
• Package
- 56-pin VQFN (7 x 7 mm)
• Environmental
- 3 kV HBM JESD22-A114F ESD protection
- Commercial temperature range (0°C to +70°C)
- Industrial temperature range (-40°C to +85°C)
2015-2016 Microchip Technology Inc.
DS00002016B-page 1

1 page




USB5742 pdf
USB5742
1.2 Reference Documents
1. UNICODE UTF-16LE For String Descriptors USB Engineering Change Notice, December 29th, 2004, http://
www.usb.org
2. Universal Serial Bus Revision 3.1 Specification, http://www.usb.org
3. Battery Charging Specification, Revision 1.2, Dec. 07, 2010, http://www.usb.org
4. I2C-Bus Specification, Version 1.1, http://www.nxp.com
5. System Management Bus Specification, Version 1.0, http://smbus.org/specs
2015-2016 Microchip Technology Inc.
DS00002016B-page 5

5 Page





USB5742 arduino
USB5742
TABLE 3-3: USB 2.0 PIN DESCRIPTIONS (CONTINUED)
Num
Pins
Symbol
USB2DN_DP[2:1]
Buffer
Type
IO-U
Description
USB 2.0 downstream ports 2-1 data plus (D+).
Port 2-1 D+ Disable Configuration Strap.
2
PRT_DIS_P[2:1]
These configuration straps are used in conjunction with the corre-
I
sponding PRT_DIS_M[2:1] straps to disable the related port (2-1).
Refer to Section 3.4.2, "Port Disable Configuration (PRT_DIS_P[2:1] /
PRT_DIS_M[2:1])" for more information.
USB2DN_DM[2:1]
IO-U
See Note 2.
USB 2.0 downstream ports 2-1 data minus (D-).
Port 2-1 D- Disable Configuration Strap.
2
PRT_DIS_M[2:1]
These configuration straps are used in conjunction with the corre-
I
sponding PRT_DIS_P[2:1] straps to disable the related port (2-1).
Refer to Section 3.4.2, "Port Disable Configuration (PRT_DIS_P[2:1] /
PRT_DIS_M[2:1])" for more information.
See Note 2.
This signal detects the state of the upstream bus power.
When designing a detachable hub, this pin must be connected to the
VBUS power pin of the upstream USB port through a resistor divider
(50 kby 100 k) to provide 3.3 V.
1 VBUS_DET
IS For self-powered applications with a permanently attached host, this
pin must be connected to either 3.3 V or 5.0 V through a resistor
divider to provide 3.3 V.
In embedded applications, VBUS_DET may be controlled (toggled)
when the host desires to renegotiate a connection without requiring a
full reset of the device.
GPIO16
I/O6 General purpose input/output 16.
Note 2: Configuration strap values are latched on Power-On Reset (POR) and the rising edge of RESET_N (external
chip reset). Configuration straps are identified by an underlined symbol name. Signals that function as con-
figurations traps must be augmented with an external resistor when connected to a load. Refer to Section
3.4, "Configuration Straps and Programmable Functions" for additional information.
TABLE 3-4: USB PORT CONTROL PIN DESCRIPTIONS
Num
Pins
Symbol
Buffer
Type
Description
Port 1 Power Enable / Overcurrent Sense.
1 PRT_CTL1
I
(PU)
As an output, this signal is an active high control signal used to enable
power to the downstream port 1. As an input, this signal indicates an
overcurrent condition from an external current monitor on USB port 1.
Port 2 Power Enable / Overcurrent Sense.
1 PRT_CTL2
I
(PU)
As an output, this signal is an active high control signal used to enable
power to the downstream port 2. As an input, this signal indicates an
overcurrent condition from an external current monitor on USB port 2.
2015-2016 Microchip Technology Inc.
DS00002016B-page 11

11 Page







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