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PDF USB2517 Data sheet ( Hoja de datos )
| Número de pieza | USB2517 | |
| Descripción | USB 2.0 Hi-Speed 7-Port Hub Controller | |
| Fabricantes | Microchip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de USB2517 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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USB2517/USB2517I
USB 2.0 Hi-Speed 7-Port Hub Controller
General Description
The 7-Port Hub is a low power, OEM configurable, MTT
(multi transaction translator) hub controller IC with 7
downstream ports for embedded USB solutions. The 7-
port hub is fully compliant with the USB 2.0 Specifica-
tion and will attach to an upstream port as a Full-Speed
Hub or as a Full-/Hi-Speed Hub. The 7-Port Hub sup-
ports Low-Speed, Full-Speed, and Hi-Speed (if operat-
ing as a Hi-Speed Hub) downstream devices on all of
the enabled downstream ports.
General Features
• Hub Controller IC with 7 downstream ports
• High-performance multiple transaction translator
MultiTRAK™ Technology provides one transac-
tion translator per port
• Enhanced OEM configuration options available
through either a single serial I2C EEPROM, or
SMBus Slave Port
• 64-Pin (9x9 mm) QFN, RoHS compliant package
• Supports commercial (0ºC to +70ºC) and indus-
trial (-40ºC to +85ºC) temperature ranges
Hardware Features
• Low power operation
• Full Power Management with individual or ganged
power control of each downstream port
• On-chip Power On Reset (POR)
• Internal 1.8V Voltage Regulator
• Fully integrated USB termination and Pull-up/Pull-
down resistors
• On Board 24MHz Crystal Driver, Resonator, or
External 24/MHz clock input
• USB host/device speed indicator. Per-port 3-color
LED drivers indicate the speed of USB host and
device connection - hi-speed (480 Mbps), full-
speed (12 Mbps), low-speed (1.5 Mbps)
• Enhanced EMI rejection and ESD protection per-
formance
OEM Selectable Features
• Customizable Vendor ID, Product ID, and Device
ID
• Select whether the hub is part of a compound
device (When any downstream port is perma-
nently hardwired to a USB peripheral device, the
hub is part of a compound device.)
• Flexible port mapping and disable sequence.
Ports can be disabled/reordered in any order to
support multiple product SKUs. Hub will automati-
cally reorder the remaining ports to match the
Host controller's numbering scheme
• Programmable USB differential-pair pin location
- Eases PCB layout by aligning USB signal
lines directly to connectors
• Programmable USB signal drive strength.
Recover USB signal integrity due to compromised
system environments using 4-level driving
strength resolution
• Select the presence of a permanently hardwired
USB peripheral device on a port by port basis
• Configure the delay time for filtering the over-cur-
rent sense inputs
• Configure the delay time for turning on down-
stream port power
• Indicate the maximum current that the 347-port
hub consumes from the USB upstream port
• Indicate the maximum current required for the hub
controller
• Support Custom String Descriptor up to 31 char-
acters in length for:
- Product String
- Manufacturer String
- Serial Number String
• Pin Selectable Options for Default Configuration
- Select Downstream Ports as Non-Removable
Ports
- Select Downstream Ports as Disabled Ports
- Select Downstream Port Power Control and
Over-Current Detection on a Ganged or Indi-
vidual Basis
- Select USB Signal Drive Strength
- Select USB Differential Pair Pin location
2013-2016 Microchip Technology Inc.
DS00001598B-page 1
1 page  
USB2517/USB2517I
1.0 ACRONYMS & DEFINITIONS
EEPROMM: Electrically Erasable Programmable Read-Only Memory (a type of non-volatile memory)
EMI: Electromagnetic Interference
ESD: Electrostatic Discharge
I2C: Inter-Integrated Circuit
LCD: Liquid Crystal Display
LED: Light Emitting Diode
OCS: Over-current sense
PCB: Printed Circuit Board
PHY: Physical Layer
PLL: Phase-Locked Loop
PVR: Personal Video Recorder (also known as a Digital Video Recorder)
QFN: Quad Flat No Leads
RoHS: Restriction of Hazardous Substances Directive
SCK: Serial Clock
SD: Secure Digital
SIE: Serial Interface Engine
SMBus: System Management Bus
TT: Transaction Translator
2013-2016 Microchip Technology Inc.
DS00001598B-page 5
5 Page 
USB2517/USB2517I
TABLE 5-1: USB2517/USB2517I PIN DESCRIPTIONS (CONTINUED)
Symbol
64 QFN Buffer Type
Description
LED_A[7:1]_N/
PRT_SWP[7:1]
15
17
31
33
47
49
51
I/O12
Port LED Indicators & Port Swap strapping option
Indicator LED for ports 1-7. Will be active low when LED support is
enabled via EEPROM or SMBus.
If this strap is enabled by package and configuration settings (see
Table 5-2), this pin will be sampled at RESET_N negation to deter-
mine the electrical connection polarity of the downstream USB
Port pins (USB_DP and USB_DM).
Also, the active state of the LED will be determined as follows:
‘0’ = Port Polarity is normal, LED is active high.
‘1’ = Port Polarity (USB_DP and USB_DM) is swapped, LED is
active low.
LED_B[7:4]_N 14 I/O12 Enhanced Indicator Port 4-7 LED
16
18 Enhanced Indicator LED for ports 4-7. Will be active low when LED
32 support is enabled via EEPROM or SMBus.
LED_B3_N/
GANG_EN
34 I/O12 Enhanced Port 3 LED, Gang Power, and Over-current Strap
Option
Enhanced Indicator LED for port 3. Will be active low when LED
support is enabled via EEPROM or SMBus.
GANG_EN: Selects between Gang or Individual Port power and
Over-current sensing.
If this strap is enabled by package and configuration settings (see
Table 5-2), this pin will be sampled at RESET_N negation to deter-
mine the mode as follows:
‘0’ = Individual sensing & switching, and LED_B3_N is active high.
‘1’ = Ganged sensing & switching, and LED_B3_N is active low.
2013-2016 Microchip Technology Inc.
DS00001598B-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet USB2517.PDF ] | |
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