2009 Teridian Semiconductor Corporation Rev 1.3 MR4:" />
參數(shù)資料
型號: 78Q2120C09-64CGTR/F
廠商: Maxim Integrated Products
文件頁數(shù): 6/35頁
文件大?。?/td> 0K
描述: TXRX 10/100 BASE 3.3V 64-LQFP
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 1,500
類型: 以太網(wǎng)
驅(qū)動器/接收器數(shù): 4/4
規(guī)程: MII
電源電壓: 3 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應商設備封裝: 64-LQFP(10x10)
包裝: 帶卷 (TR)
78Q2120C
10/100BASE-TX
Transceiver
Page: 14 of 35
2009 Teridian Semiconductor Corporation
Rev 1.3
MR4: Auto-Negotiation Advertisement Register
BIT
SYMBOL TYPE DEFAULT DESCRIPTION
4.15
NP
R
0
Next Page: Not supported. Reads logic zero.
4.14
RSVD
R
0
Reserved
4.13
RF
R/W
0
Remote Fault: Setting this bit to ‘1’ allows the device to indicate 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 the MR1.15:11 register 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 re-
initiated.
4.12
A7
R
0
Reserved for future technology.
4.11
A6
R/W
0
Reserved
4.10
A5
R/W
0
Reserved.
4.9
A4
R
0
100BASE-T4:
The 78Q2120C does not support 100BASE-T4
operation.
4.8
A3
R/W
(1)
100BASE-TX Full Duplex: If the MR1.14 bit is ‘1’, this bit will be set
to ‘1’ upon reset and will be writeable. Otherwise, this bit cannot be
set to ‘1’ by the management.
4.7
A2
R/W
(1)
100BASE-TX: If the MR1.13 bit is ‘1’, this bit will be set to ‘1’ upon
reset and will be writeable. Otherwise, this bit cannot be set to ‘1’ by
the management.
4.6
A1
R/W
(1)
10BASE-T Full Duplex: If the MR1.12 bit is ‘1’, this bit will be set to
‘1’ upon reset and will be writeable. Otherwise, this bit cannot be set
to ‘1’ by the management.
4.5
A0
R/W
(1)
10BASE-T: If the MR1.11 bit is ‘1’, this bit will be set to ‘1’ upon reset
and will be writeable. Otherwise, this bit cannot be set to ‘1’ by the
management.
4.4:0
S4:0
R
01h
Selector Field: Hard coded with the value of ‘00001’ for IEEE 802.3.
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