mcs7830 MosChip, mcs7830 Datasheet - Page 17

• Manufacturer Part Number: mcs7830
• Description: Usb-2.0 To Ethernet
• Manufacturer: MosChip

Rev.
VENDOR SPECIFIC WRITES WITH MASK
(write with mask)
The MSB Byte in the W_Value gives the bits to be
modifi ed, and the LSB Byte gives the Value to be
written into the bits specifi ed by the mask value.
W_index gives the Byte to be modifi ed as specifi ed in
W_value.
W_Length should be 16’h0000.
in the W_index is not available, the device will
respond with “STALL”.
If the W_Length is not “0”, and the register specifi ed
Bm_Request
W_Length
Brequest
W_Value
W_Index
3.1
16’b 0000_0000_0000_0000
LSB = value to be written
MSB = Mask bit value
Address of Register
8’b 0100_0000
8’b 0000_1111
Serial EEPROM Support
The serial interface is used to provide access to an
external EEPROM. The Ethernet MAC automatically
loads the Device-ID from the EEPROM after Power-On
Reset. It can also be used to program the EEPROM
through the USB port.
VENDOR SPECIFIC EEPROM ENABLE
(for programming purposes)
This command is used to enable the EEPROM for
programming purposes.
VENOR SPECIFIC EEPROM WRITE
Sends six Bytes of ETHERNET Address to
EEPROM.
Bm_Request
Bm_Request
W_Length
W_Length
Brequest
Brequest
W_Value
W_Index
W_Value
W_Index
16’b 0000_0000_0000_0000
16’b 0000_0000_0000_0000
16’b 0000_0000_0000_0000
16’b 0000_0000_0000_0000
16’b 0000_0000_0000_0000
16’b 0000_0000_0000_0006
MCS7830
USB-2.0 to Ethernet
8’b 0100_0000
8’b 0001_0000
8’b 0100_0000
8’b 0001_0001
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