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參數(shù)資料
| 型號： | 78Q2120 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 10/100BASE-TX Ethernet Transceiver |
| 中文描述： | 10/100BASE-TX以太網(wǎng)收發(fā)器 |
| 文件頁數(shù)： | 13/33頁 |
| 文件大?。?/td> | 200K |
| 代理商： | 78Q2120 |
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78Q2120
10/100BASE-TX
Ethernet Transceiver
MR2, 3 - PHY IDENTIFIER REGISTER
13
2.15:0
OUI
R, 0300h
ORGANIZATIONALLY UNIQUE IDENTIFIER: This value is 00-
C0-39 for TDK Semiconductor Corporation. This translates to a
value of 300h for this register.
3.15:10
OUI
R, 111001
ORGANIZATIONALLY UNIQUE IDENTIFIER: Remaining 6 bits
of the OUI.
3.9:4
MN
R, 010100
MODEL NUMBER: The last 2 digits of the model number
78Q2120 is encoded into the 6 bits. (20d = 14h)
3.3:0
RN
R
REVISION NUMBER: For example, a value of 0010 corresponds
to the second version of the silicon.
MR4 - AUTO-NEGOTIATION ADVERTISEMENT REGISTER
BIT
SYMBOL
TYPE
DESCRIPTION
4.15
NP
R,0
NEXT PAGE: Not supported; permanently tied to logic zero.
4.14
RSVD
R,0
RESERVED: This bit is permanently set to logic 0.
4.13
RF
R, W, 0
REMOTE FAULT: When internally set to logic one, the MII
management interface indicates to the link partner a remote fault
condition.
4.12:5
TAF
R, W,
(0Fh)
TECHNOLOGY ABILITY FIELD: The default value of this field is
dependent upon MR1.15:11 bits. This field can be overwritten by
management to auto-negotiate to an alternate common technology.
Writing to this register has no effect until auto-negotiation is
enabled.
4.12:10
A7:5
R, 0
Reserved for future technology.
4.9
4.8
A4
A3
R, 0
100BASE-T4: The 78Q2120 does support 100BASE-T4.
100BASE-TX FULL DUPLEX: The default value of this bit follows
MR1.14 bit. When the default is zero, this bit set by the
management.
R, W, (1)
4.7
A2
R, W, (1)
100BASE-TX:The default value of this bit follows MR 1.13 bit. When
the default is zero, this bit cannot be set by the management.
4.6
A1
R, W, (1)
10BASE-T FULL DUPLEX: The default value of this bit follows
MR1.12 bit. When the default is zero, this bit cannot be set by the
management.
4.5
A0
R, W, (1)
10BASE-T: The default value of this bit follows MR1.11 bit. When
the default is zero, this bit cannot be set by the management.
4.4:0
S4:0
R, 00001
SELECTOR FIELD: Hard coded with the value of 00001 for
IEEE-802.3.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 78Q2120-64 | 10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64CG | 10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64CGT | 10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64T | 10/100BASE-TX Ethernet Transceiver |
| 78Q2120-CGT | 10/100BASE-TX Ethernet Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 78Q2120-64 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64CG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64CGT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:10/100BASE-TX Ethernet Transceiver |
| 78Q2120C | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:10/100BASE - TX Transceiver |
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