LAN9730 Datasheet, PDF (141/222 Pages) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

LAN9730/LAN9730i
Bits
Description
Type
10 EPC Time-out
R/WC
If an EEPROM operation is performed, and there is no response from the
EEPROM within 30 ms, the EEPROM controller will time-out and return to its
idle state. This bit is set when a time-out occurs, indicating that the last opera-
tion was unsuccessful.
Note:
If the EEDI pin is pulled-high (default if left unconnected), EPC
commands will not time out if the EEPROM device is missing. In this
case, the EPC Busy bit will be cleared as soon as the command
sequence is complete. It should also be noted that the ERASE,
ERAL, WRITE and WRAL commands are the only EPC commands
that will time-out if an EEPROM device is not present and the EEDI
signal is pulled low.
9 Data Loaded
R/WC
When set, this bit indicates that a valid EEPROM was found and that the USB
and Ethernet data programming has completed normally. This bit is set after a
successful load of the data after power-up or after a RELOAD command has
been completed.
8:0 EPC Address
R/W
The 9-bit value in this field is used by the EEPROM Controller to address a
specific memory location in the Serial EEPROM. This is a byte-aligned
address.
Default
0
0
00h
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DS00001946A-page 141