參數(shù)資料
型號(hào)： AM79C901AVI
廠商： ADVANCED MICRO DEVICES INC
元件分類(lèi)： 網(wǎng)絡(luò)接口
英文描述： HomePHY Single-Chip 1/10 Mbps Home Networking PHY
中文描述： DATACOM, ETHERNET TRANSCEIVER, PQFP80
封裝： PLASTIC, MO-136BAM, TQFP-80
文件頁(yè)數(shù)： 65/90頁(yè)
文件大?。?/td> 714K
代理商： AM79C901AVI
Am79C901A
65
P R E L I M I N A R Y
TBR19: 10BASE-T PHY Management Extension Register (Register 19)
Table 2 contains the PHY Management Extension Reg-
ister (Register 19) bits.
Table 2.
TBR19: 10BASE-T PHY Management Extension Register (Register 19)
TBR24: 10BASE-T Summary Status Register (Register 24)
The Summary Status register is a global register con-
taining status information. This register is Read Only
and represents the most important data which a single
register access can convey. The Summary Status regis-
ter indicates the following: Link Status, Full-Duplex Sta-
tus, Auto-Negotiation Alert, and Speed. See Table 3.
Table 3.
TBR24: 10BASE-T Summary Status Register (Register 24)
Bits
Name
Description
Read/Write
Default Value
(hex)
15:6
Reserved
Write as 0; ignore on read
R
0
5
Mgmt Frame Format
1 = Last management frame was invalid
(opcode error, etc.)
0 = Last management frame was valid
R
0
4:0
PHY Address
PHY Address defaults to 000X1
X = Value on pin PHY_ADD (i.e., 00001 or
00011)
R
01/03
Bits
Name
Description
Read/Write
Default Value
(hex)
15:4
Reserved
Write as 0; Ignore on Read
R
0
3
Link Status
1 = Link Status is up
0 = Link Status is down
R
0
2
Full-Duplex
1 = Operating in Full-Duplex mode
0 = Operating in Half-Duplex mode
R
0
1
Auto-Negotiation
Alert
1 = Auto-Negotiation status has changed
0 = Auto-Negotiation status unchanged
R
0
0
Speed
1 = Operating at 100 Mbps
0 = Operating at 10 Mbps
R
0
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