MCS7784 MosChip, MCS7784 Datasheet - Page 5

• Manufacturer Part Number: MCS7784
• Description: Usb To Irda Port
• Manufacturer: MosChip

Rev.
Functional Description
The MCS7784 consists of two major functional blocks, the USB controller and the IrDA interface. The USB
controller provides Control, Bulk-In, and Bulk-Out endpoints to the USB host. The serial interface consists of
transmit and receive blocks that connect to an external IrDA transceiver.
USB Interface
The USB interface to the host controller includes a Control endpoint, a Bulk-In endpoint, and a Bulk-Out
endpoint. The USB controller supports the USB 1.1 specification. Hence, it supports all standard functionality
associated with device enumeration, standard USB device requests, etc. In addition, there is a set of vendor
specific commands provided to allow a USB driver to access registers and ROM in the USB controller.
EEPROM Interface
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.
When the EEPROM is present, the following data will be loaded into the MCS7784 registers.
2.0
118-103
102-61
12-11
60-13
Byte
10-8
1-0
3-2
5-4
7-6
Length
48
42
16
2
2
2
2
3
2
Manufacture ID
Product Name
Serial Number
Language ID
EE Check
2
Name
C interface.
DCR
VID
PID
RN
“MosChip Semiconductor” in UNICODE
Release Number in BCD format (0001)
Device Configuration Register (DCR)
“USB-Serial controller” in UNICODE
Language ID in Hex format (0409)
EEPROM Present Check, (9710.)
“XXXXXXXX” in UNICODE
Product ID (7784)
Vendor ID (9710)
Description
MCS7784
USB to IrDA Port
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