RTL8100BL-GR datasheet(44/66 Pages) REALTEK

Part #	RTL8100BL-GR

Description	SINGLE-CHIP 10/100MBPS ETHERNET CONTROLLER WITH POWER MANAGEMENT

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Manufacturer	REALTEK [Realtek Semiconductor Corp.]

Direct Link	https://www.realtek.com/en/

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44 / 66 page

RTL8100B(L)

Datasheet

Single-Chip 10/100 Ethernet Controller w/Power Management

38

Track ID: JATR-1076-21 Rev. 1.5

SVID: Subsystem Vendor ID. This field will be set to a value corresponding to PCI Subsystem Vendor ID in the external

EEPROM. If there is no EEPROM, this field will default to a value of 10ECh which is Realtek Semiconductor's PCI

Subsystem Vendor ID.

SMID: Subsystem ID. This field will be set to value corresponding to PCI Subsystem ID in the external EEPROM. If there is no

EEPROM, this field will default to a value of 8139h.

ILR: Interrupt Line Register

The Interrupt Line Register is an 8-bit register used to communicate with the routing of the interrupt. It is written by the

POST software to set interrupt line for the RTL8100B(L).

IPR: Interrupt Pin Register

The Interrupt Pin register is an 8-bit register indicating the interrupt pin used by the RTL8100B(L). The RTL8100B(L)

uses INTA interrupt pin. Read only. IPR = 01H.

MNGNT: Minimum Grant Timer: Read only

Specifies how long a burst period the RTL8100B(L) needs at 33 MHz clock rate in units of 1/4 microsecond. This

field will be set to a value from the external EEPROM. If there is no EEPROM, this field will default to a value of

20h.

MXLAT: Maximum Latency Timer: Read only

Specifies how often the RTL8100B(L) needs to gain access to the PCI bus in unit of 1/4 microsecond. This field

will be set to a value from the external EEPROM. If there is no EEPROM, this field will default to a value of 20h.

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