LAN9211_0711 SMSC [SMSC Corporation], LAN9211_0711 Datasheet - Page 42
LAN9211_0711
Manufacturer Part Number
LAN9211_0711
Description
High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9211_0711.pdf
(146 pages)
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Revision 1.93 (11-27-07)
3.9.2.2
3.9.2.3
3.9.2.4
EEDIO (OUTPUT)
EEDIO (INPUT)
EECLK
EECS
WRAL (Write All): If erase/write operations are enabled in the EEPROM, this command will cause the
contents of the E2P_DATA register to be written to every EEPROM memory location. The EPC_TO bit
is set if the EEPROM does not respond within 30ms.
Table 3.9, "Required EECLK
each EEPROM operation.
MAC Address Reload
The MAC address can be reloaded from the EEPROM via a host command to the E2P_CMD register.
If a value of 0xA5h is not found in the first address of the EEPROM, the EEPROM is assumed to be
un-programmed and MAC Address Reload operation will fail. The “MAC Address Loaded” bit indicates
a successful load of the MAC address. The EPC_LOAD bit is set after a successful reload of the MAC
address.
EEPROM Command and Data Registers
Refer to
"E2P_DATA – EEPROM Data Register," on page 105
Supported EEPROM operations are described in these sections.
EEPROM Timing
Refer to
OPERATION
ERASE
WRITE
EWDS
EWEN
READ
WRAL
ERAL
Section 5.3.23, "E2P_CMD – EEPROM Command Register," on page 103
Section 6.9, "EEPROM Timing," on page 138
1
0
0
Figure 3.11 EEPROM WRAL Cycle
Table 3.9 Required EECLK Cycles
0
Cycles", shown below, shows the number of EECLK cycles required for
1
DATASHEET
42
High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX
REQUIRED EECLK CYCLES
D7
for detailed EEPROM timing specifications.
for a detailed description of these registers.
D0
10
10
10
10
18
18
18
t
CSL
and
SMSC
Section 5.3.24,
Datasheet
LAN9211
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