lan9313 Standard Microsystems Corp., lan9313 Datasheet - Page 160

• Manufacturer Part Number: lan9313
• Description: Lan9313/lan9313i Three Port 10/100 Managed Ethernet Switch With Mii
• Manufacturer: Standard Microsystems Corp.

Revision 1.2 (04-08-08)
13.1.3
13.1.3.1
BITS
31
EEPROM Controller Busy (EPC_BUSY)
When a 1 is written into this bit, the operation specified in the
EPC_COMMAND field of this register is performed at the specified
EEPROM address. This bit will remain set until the selected operation is
complete. In the case of a read, this indicates that the Host can read valid
data from the
E2P_DATA registers should not be modified until this bit is cleared. In the
case where a write is attempted and an EEPROM is not present, the
EPC_BUSY bit remains set until the
(EPC_TIMEOUT)
Note:
EEPROM
This section details the EEPROM related System CSR’s. These registers should only be used if an
EEPROM has been connected to the LAN9313/LAN9313i. Refer to chapter
Master EEPROM Controller," on page 101
Microwire) of the EEPROM Controller (EPC).
EEPROM Command Register (E2P_CMD)
This read/write register is used to control the read and write operations of the serial EEPROM.
EPC_BUSY is set immediately following power-up, or pin reset, or
DIGITAL_RST reset. After the EEPROM Loader has finished
loading, the EPC_BUSY bit is cleared. Refer to chapter
8.2.4, "EEPROM Loader," on page 113
Offset:
EEPROM Data Register
bit is set. At this time the EPC_BUSY bit is cleared.
1B4h
DESCRIPTION
EEPROM Controller Timeout
DATASHEET
(E2P_DATA). The E2P_CMD and
160
for additional information on the various modes (I
for more information.
Size:
Three Port 10/100 Managed Ethernet Switch with MII
32 bits
Section
Section 8.2, "I2C/Microwire
TYPE
R/W
SMSC LAN9313/LAN9313i
SC
DEFAULT
Datasheet
0b
2
C and