RC82540EP Intel, RC82540EP Datasheet - Page 16

• Manufacturer Part Number: RC82540EP
• Manufacturer: Intel

Specifications of RC82540EP

• Operating Supply Voltage (typ): 1.5/2.5/3.3V
• Operating Supply Voltage (min): 1.43/2.38/3V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 196
• Lead Free Status / RoHS Status: Not Compliant

82540EP — Networking Silicon
3.2.6
3.2.7
3.2.8
3.3
10
Power Management Signals
Impedance Compensation Signals
SMB Signals
EEPROM and Serial FLASH Interface Signals
LAN_
PWR_
GOOD
PME#
AUX_PWR
ZN_COMP
ZP_COMP
SMBCLK
SMBDATA
SMB_
ALERT#
EEDI
EEDO
EECS
EESK
Symbol
Symbol
Symbol
Symbol
I
OD
I
I/O
I/O
I/O
I/O
O
O
I
O
O
Type
Type
Type
Type
Power Good (Power-on Reset). The Power Good signal is used to indicate that stable
power is available for the 82540EP. When the signal is low, the 82540EP holds itself in
reset state and floats all PCI signals.
Power Management Event. The 82540EP device drives this signal low when it
receives a wake-up event and either the PME Enable bit in the Power Management
Control/Status Register or the Advanced Power Management Enable (APME) bit of the
Wake-up Control Register (WUC) is 1b.
Auxiliary Power. If the Auxiliary Power signal is high, then auxiliary power is available
and the 82540EP device should support the D3cold power state.
N Device Impedance Compensation. This signal should be connected to an external
precision resistor (to VDD) that is indicative of the PCI trace load. This cell is used to
dynamically determine the drive strength required on the N-channel transistors in the
PCI I/O cells.
P Device Impedance Compensation. This signal should be connected to an external
precision resistor (to VSS) that is indicative of the PCI trace load. This cell is used to
dynamically determine the drive strength required on the P-channel transistors in the
PCI I/O cells.
SMB Clock. The SMB Clock signal is an open drain signal for serial SMB interface.
SMB Data. The SMB Data signal is an open drain signal for serial SMB interface.
SMB Alert. The SMB Alert signal is open drain for serial SMB interface.
EEPROM Data Input. The EEPROM Data Input pin is used for output to the memory
device.
EEPROM Data Output. The EEPROM Data Output pin is used for input from the
memory device. The EE_DO includes an internal pull-up resistor.
EEPROM Chip Select. The EEPROM Chip Select signal is used to enable the device.
EEPROM Serial Clock. The EEPROM Shift Clock provides the clock rate for the
EEPROM interface, which is approximately 1 MHz.
Name and Function
Name and Function
Name and Function
Name and Function