LAN9420I-NU SMSC, LAN9420I-NU Datasheet - Page 99

• Manufacturer Part Number: LAN9420I-NU
• Description: IC ETHERNET CTRLR SGL 128VTQFP
• Manufacturer: SMSC
• Type: Single Chip MAC and PHY Controllerr

Specifications of LAN9420I-NU

• Controller Type: Ethernet Controller
• Interface: PCI
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 145mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Product: Ethernet Controllers
• Number Of Transceivers: 1
• Standard Supported: 802.3, 802.3u
• Data Rate: 10 MB, 100 MB
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.6 V
• Maximum Operating Temperature: + 85 C
• Ethernet Connection Type: 10/100 Base-T
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 638-1085

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
SMSC LAN9420/LAN9420i
4.2.11
BITS
31
EPC Busy (EPC_BSY)
When a 1 is written into this bit, the operation specified in the EPC command
field is performed at the specified EEPROM address. This bit will remain set
until the operation is complete. In the case of a read this means that the Host
can read valid data from the E2P data register. The E2P_CMD and
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 remains busy until the EPC Time-out occurs. At that time the busy bit
is cleared.
Note:
EEPROM Command Register (E2P_CMD)
This register is used to control the read and write operations with the serial EEPROM.
EPC busy will be high immediately following power-up or reset.
After the EEPROM controller has finished reading (or attempting to
read) the MAC address and SSVID/SSID from the EEPROM, the
EPC Busy bit is cleared.
Offset:
DESCRIPTION
00F8h
DATASHEET
99
Size:
32 bits
TYPE
SC
Revision 1.4 (12-17-08)
DEFAULT
0b