參數(shù)資料
型號(hào): AM79C976
廠商: Advanced Micro Devices, Inc.
英文描述: PCnet-PRO⑩ 10/100 Mbps PCI Ethernet Controller
中文描述: PCnet -專(zhuān)業(yè)⑩個(gè)10/100Mbps PCI以太網(wǎng)控制器
文件頁(yè)數(shù): 137/309頁(yè)
文件大?。?/td> 2070K
代理商: AM79C976
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8/01/00
Am79C976
137
P R E L I M I N A R Y
10
RXFRTGEN
Receive Frame Tag Enable. When this bit is set, frame tag data that is shifted in through the
External Address Detection Interface (EADI) while a frame is being received will be copied to the
receive descriptor.
9
MPPLBA
Magic Packet Physical Logical Broadcast Accept. If MPPLBA is at its default value of 0, the
Am79C976 controller will only detect a Magic Packet frame if the destination address of the
packet matches the content of the physical address register (PADR). If MPPLBA is set to 1, the
destination address of the Magic Packet frame can be unicast, multicast, or broadcast. Note that
the setting of MPPLBA only affects the address detection of the Magic Packet frame. The Magic
Packet frame
s data sequence must be made up of 16 consecutive physical addresses
(PADR[47:0]) regardless of what kind of destination address it has. This bit is OR
ed with
EMPPLBA bit (CSR116, bit 6).
This bit is an alias of CSR5, bit 5.
8
MPPEN_EE
Magic Packet Pin Enable. When either this bit or the MPPEN_SW bit in CMD7 is set, the device
enters the Magic Packet mode when the PG input goes LOW. This bit has the same function as
MPPEN_SW except that H_RESET clears MPPEN_EE to 0, while H_RESET has no effect on
MPPEN_SW.
This bit is an alias of CSR116, bit 4.
7
VAL0
Value bit for byte 0. The value of this bit is written to any bits in the CMD3 register that correspond
to bits in the CMD3[6:0] bit map field that are set to 1.
6
MPEN_EE
Magic Packet Enable. When either this bit or the MPEN_SW bit in CMD7 is set, the device enters
the Magic Packet mode. This bit has the same function as MPEN_SW except that H_RESET
clears MPEN_EE to 0, while H_RESET has no effect on MPEN_SW.
5
LCMODE_EE
Link Change Wake-up Mode. When either this bit or the LCMODE_SW bit in CMD7 is set to 1,
the LCDET bit gets set when the MII auto polling logic detects a Link Change. This bit has the
same function as LCMODE_SW except that H_RESET clears LCMODE_EE to 0, while
H_RESET has no effect on LCMODE_SW.
This bit is an alias of CSR116, bit 8.
4
PME_EN_OVR
PME_EN Overwrite. When this bit is set and the MPMAT or LCDET bit is set, the PME pin will
always be asserted regardless of the state of PME_EN bit.
This bit is an alias of CSR116, bit 10.
3
RWU_DRIVER
RWU Driver Type. If this bit is set to 1, RWU is a totem pole driver; otherwise, RWU is an open
drain output.
This bit is an alias of CSR116, bit 3.
2
RWU_GATE
RWU Gate Control. If this bit is set, RWU is forced to the high Impedance State when PG is LOW,
regardless of the state of the MPMAT and LCDET bits.
This bit is an alias of CSR116, bit 2.
1
RWU_POL
RWU Pin Polarity. If RWU_POL is set to 1, the RWU pin is normally HIGH and asserts LOW;
otherwise, RWU is normally LOW and asserts HIGH.
This bit is an alias of CSR116, bit 1.
0
RST_POL
PHY_RST Pin Polarity. If the PHY_POL is set to 1, the PHY_RST pin is active LOW; otherwise,
PHY_RST is active HIGH.
This bit is an alias of CSR116, bit 0.
Bit
Name
Description
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