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PDF USB3450 Data sheet ( Hoja de datos )
| Número de pieza | USB3450 | |
| Descripción | Hi-Speed USB Host or Device PHY | |
| Fabricantes | Microchip | |
| Logotipo |  |
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USB3450
Hi-Speed USB Host or Device PHY With UTMI+ Interface
Highlights
• USB-IF “Hi-Speed” certified to the Universal Serial
Bus Specification Rev. 2.0
• Interface compliant with the UTMI+ Specification,
Rev. 1.0
• Functional as a host or device PHY
• Supports HS, FS, and LS data rates
• Supports FS pre-amble for FS hubs with a LS
device attached (UTMI+ Level 3)
• Supports HS SOF and LS keep alive pulse
• Low Latency Hi-Speed Receiver (43 Hi-Speed
clocks Max)
• Internal 1.8 volt regulators allow operation from a
single 3.3 volt supply
• Internal short circuit protection of DP and DM
lines to VBUS or ground
• Integrated 24MHz Crystal Oscillator supports
either crystal operation or 24MHz external clock
input
• Internal PLL for 480MHz Hi-Speed USB operation
• Supports Hi-Speed USB and legacy USB 1.1
devices
• 55mA Unconfigured Current (typical) - ideal for
bus powered applications
• 83uA suspend current (typical) - ideal for battery
powered applications
• Full Commercial operating temperature range
from 0C to +70C
• 40 pin QFN RoHS compliant package
(6 x 6 x 0.9mm height)
Functional Overview
The USB3450 is a highly integrated USB transceiver
system. It contains a complete Hi-Speed PHY with the
UTMI+ industry standard interface to support fast time
to market for a USB controller. The USB3450 is com-
posed of the functional blocks shown below.
USB3450 Block Diagram
VDD3.3
Internal
Regulator &
POR
24 MHz
XTAL
XTAL &
PLL
XCVRSEL[1:0]
TERMSEL
TXREADY
SUSPENDN
TXVALID
RESET
RXACTIVE
OPMODE[1:0]
CLKOUT
LINESTATE[1:0]
HOSTDISC
DATA[7:0]
HOST
RXERROR
UTMI+
Digital
HS XCVR
FS/LS
XCVR
USB3450
VDD3.3
DP
DM
Mini-AB
USB
Connector
Resistors
Bias
Gen.
RBIAS
2005 - 2016 Microchip Technology Inc.
DS00002105A-page 1
1 page  
USB3450
1.1 Applications
The USB3450 is targeted for any application where a high speed USB connection is desired.
The USB3450 is well suited for:
• Cell Phones
• MP3 Players
• Scanners
• Set Top Boxes
• Printers
• External Hard Drives
• Still and Video Cameras
• Portable Media Players
• Entertainment Devices
1.2 Reference Documents
• Universal Serial Bus Specification, Revision 2.0, April 27, 2000
• Hi-Speed Transceiver Macrocell Interface (UTMI) Specification, Version 1.02, May 27, 2000
• UTMI+ Specification, Revision 1.0, February 2, 2004
2005 - 2016 Microchip Technology Inc.
DS00002105A-page 5
5 Page 
USB3450
4.0 ELECTRICAL CHARACTERISTICS
TABLE 4-1: ELECTRICAL CHARACTERISTICS: SUPPLY PINS (Note 4-1)
Parameter
Symbol
Conditions
MIN TYP
Unconfigured Current
FS Idle Current
FS Transmit Current
IAVG(UCFG)
IAVG(FS)
IAVG(FSTX)
Device Unconfigured
FS idle not data transfer
FS current during data
transmit
55
55
60.5
FS Receive Current
HS Idle Current
HS Transmit Current
HS Receive Current
IAVG(FSRX)
IAVG(HS)
IAVG(HSTX)
IAVG(HSRX)
FS current during data
receive
FS idle not data transfer
FS current during data
transmit
FS current during data
receive
57.5
60.6
62.4
61.5
Low Power Mode
IDD(LPM)
VBUS 15kΩ pull-down and
1.5kΩ pull-up resistor
currents not included.
83
Note 4-1 VDD3.3 = 3.0 to 3.6V; VSS = 0V; TA = 0C to +70C; unless otherwise specified.
MAX
Units
mA
mA
mA
mA
mA
mA
mA
uA
TABLE 4-2: ELECTRICAL CHARACTERISTICS: CLKOUT START-UP
Parameter
Suspend Recovery Time
Symbol
TSTART
Conditions
MIN
TYP
2.25
MAX
3.5
Units
ms
TABLE 4-3: DC ELECTRICAL CHARACTERISTICS: LOGIC PINS
Parameter
Low-Level Input Voltage
High-Level Input Voltage
Low-Level Output Voltage
High-Level Output Voltage
Input Leakage Current
Pin Capacitance
Symbol
VIL
VIH
VOL
VOH
ILI
Cpin
Conditions
IOL = 8mA
IOH = -8mA
MIN
VSS
2.0
VDD3.3 -
0.4
TYP
MAX
0.8
VDD3.3
0.4
±10
4
Units
V
V
V
V
uA
pF
Note: VDD3.3 = 3.0 to 3.6V; VSS = 0V; TA = 0C to +70C; unless otherwise specified.
2005 - 2016 Microchip Technology Inc.
DS00002105A-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet USB3450.PDF ] | |
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