MCS7784 MosChip, MCS7784 Datasheet

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MCS7784

Manufacturer Part Number
MCS7784
Description
Usb To Irda Port
Manufacturer
MosChip
Datasheet
Features
General Description
The MCS7784 controller provides bridging between
the Universal Serial Bus (USB) and an IrDA wireless
data communication port. This device contains all
the necessary logic to communicate with the host
computer via the USB bus.
MCS7784 contains an on-chip regulator & operates
in bus-powered mode. MCS7784 has a reduced
frequency (12 MHz) crystal oscillator. MCS7784
also has an optional EEPROM Interface.
This combination of features allows significant
cost savings in system designs, along with straight
forward implementation of IrDA port functionality
into PC peripherals using the host’s USB port.
MosChip Semiconductor
Low-power CMOS design
Powered from USB port
Single 12 MHz crystal
IrDA data rates from 2.4 Kbps to 115.2
kbps in SIR mode
Uses standard IrDA transceivers
USB Specification 1.1 compliant
Supports all USB standard commands
Full compliance to IrDA 1.4
On-Chip 5V to 3.3V Voltage Regulator
I
Re-configurable Vendor-Specific
parameters (Vendor-ID, Product-ID,
Release #)
Support for 4 string descriptors
(Language-ID, Manufacturer-ID, Product
Name, Serial Number)
Low-Profile 28-pin SSOP package
2
C EEPROM Interface
♦ 3335 Kifer Rd, Santa Clara, CA 95051 ♦ Tel (408) 737-7141 ♦ Fax (408) 737-7708
Applications
Application Note
Evaluation Board
Certifications
MCS7784CS-GR
Commercial Grade (0 °C to +70 °C)
Customer boards require IrDA qualification
Add-on IrDA dongle
Cell Phones
Embedded Applications
AN-7784
MCS7784-EVB
WHQL Certified
Ordering Information
“IrReady Qualified”
in Demo Adapters
MCS7784
28-SSOP
USB to IrDA Port
RoHS

Related parts for MCS7784

MCS7784 Summary of contents

Page 1

... This device contains all the necessary logic to communicate with the host computer via the USB bus. MCS7784 contains an on-chip regulator & operates in bus-powered mode. MCS7784 has a reduced frequency (12 MHz) crystal oscillator. MCS7784 also has an optional EEPROM Interface. This combination of features allows significant ...

Page 2

... MCS7784 USB to IrDA Port DP USB Interface DM Serial Interface Engine XTAL1 PLL & Clock XTAL2 Generator Page 2 Block Diagram Descriptor Table FIFO I C Voltage FIFO Regulator IrDA Digital Interface EECLK 2 EESDA 5V VOUT TX RX Rev. 2.1 ...

Page 3

... TX 2 N.C. 3 N.C. 4 RSTO N.C. 7 GND 8 3.3V 9 N.C. 10 N.C. 11 N.C. 12 TCLK 13 EECLK 14 EESDA Rev. 2.1 Pinout Diagram MCS7784 USB to IrDA Port XTAL2 XTAL1 TST AGND 3.3VA N.C. N.C. GND 5V RESET GND VOUT DM DP Page 3 ...

Page 4

... MCS7784 USB to IrDA Port Pin Assignments Name Pin Type Serial Data Output. Power-On Reset Output. TRST 4 O The internal Power-On Reset signal is routed to this pin Serial Data Input. Test Clock TCLK 12 O Output in test mode. EECLK 13 I/O 2-Wire EEPROM Clock. ...

Page 5

... The MCS7784 uses an optional external EEPROM to load vendor specific parameters. The EEPROM is connected through a convenient 2-Wire I After Power-On Reset, the MCS7784 reads two Bytes from the EEPROM. If the two Bytes are equal to 0x9710 it recognizes an EEPROM as being present, and additional 8 Bytes are read. ...

Page 6

... MCS7784 USB to IrDA Port Electrical Characteristics Absolute Maximum Ratings Supply Voltage Voltage at any pin Operating Temperature Storage Temperature Package Dissipation ESD Latch up DC Electrical Specification Temp = 0 °C to +70 °C, Vcc = 3.3 – 5.0 V ± 10% unless otherwise specified. Symbol Parameter 5V 5V Supply 3.3V Supply Voltage ...

Page 7

... TYP c 28-Pin SSOP Package Dimensions Rev. 2 MILLIMETERS SYMBOL MIN TYP MAX A1 0.05 0.21 A2 1.65 1.80 C 0.25 e 0.65 D 10.00 10.4 E 7.4 7.8 8.2 E1 5.2 5.4 L 0.55 0.75 0.95 MCS7784 USB to IrDA Port INCHES MIN TYP MAX 0.020 0.08 0.650 0.708 0.026 3.93 4.09 2.05 2.12 Page 7 ...

Page 8

... MCS7784 USB to IrDA Port MosChip Semiconductor Technology, LTD products are not authorized for use as critical components in life support devices or systems. Life support devices are applications that may involve potential risks of death, personal injury or severe property or environmental damages. These critical components are semiconductor products whose failure to perform can be reasonably expected to cause the failure of the life support systems or device adversely impact its effectiveness or safety ...

Page 9

... Revision 1.0 2.0 2.1 Corrected Operating Temperature Specs. Rev. 2.1 Revision History Changes Initial Release Updated to new Layout Format MCS7784 USB to IrDA Port Date Feb-2004 26-May-2006 31-May-2006 Page 9 ...

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