參數(shù)資料
型號(hào)： 78Q2133R/F
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 10/38頁(yè)
文件大?。?/td> 0K
描述： TXRX 10/100 MDIX 3.3V IND 32-QFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
類(lèi)型： PHY 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 4/4
規(guī)程： IEEE 802
電源電壓： 3 V ~ 3.6 V
安裝類(lèi)型： 表面貼裝
封裝/外殼： 32-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 32-QFN 裸露焊盤(pán)（5x5）
包裝： 帶卷 (TR)
78Q2123/78Q2133 Data Sheet
DS_21x3_001
18
Rev. 1.6
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.
Note: Technology Ability Field: MR4.12:5 are the Technology Ability Field bits (A7:0). 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.
3.6
MR5: Auto-Negotiation Link Partner Ability Register
Bit
Symbol
Type
Default
Description
5.15
NP
R
0
Next Page: When ‘1’ is read, it indicates the link partner
wishes to engage in Next Page exchange.
5.14
ACK
R
0
Acknowledge: When ‘1’ is read, it indicates the link partner has
successfully received at least 3 consecutive and consistent
FLP bursts.
5.13
RF
R
0
Remote Fault: When ‘1’ is read, it indicates the link partner has
a fault.
5.12:5
A7:0
R
0
Technology Ability Field: This field contains the technology
ability of the link partner. The bit definition is the same as
MR4.12:5.
5.4:0
S4:0
R
00h
Selector Field: This field contains the type of message sent by
the link partner. For an IEEE 802.3 compliant link partner, this
field should be ‘00001’.
3.7
MR6: Auto-Negotiation Expansion Register
Bit
Symbol
Type
Default
Description
6.15:5
RSVD
R
0
Reserved
6.4
PDF
RC
0
Parallel Detection Fault: When ‘1’ is read, it indicates that
more than one technology has been detected during link up.
This bit is cleared when read.
6.3
LPNPA
R
0
Link Partner Next Page Able: When ‘1’ is read, it indicates the
link partner supports the Next Page function.
6.2
NPA
R
0
Next Page Able: Reads ‘0’ since the 78Q2123/78Q2133 do not
support Next Page function.
6.1
PRX
RC
0
Page Received: Reads ‘1’ when a new link code word has
been received into the Auto-Negotiation Link Partner Ability
Register. This bit is cleared upon read.
6.0
LPANEGA
R
0
Link Partner Auto-Negotiation Able: When ‘1’ is read, it
indicates the link partner is able to participate in the Auto-
Negotiation function.
3.8
MR16: Vendor Specific Register
Bit
Symbol
Type
Default
Description
16.15
RPTR
R/W
(0)
Repeater Mode: When set, the 78Q2123/78Q2133 are put
into Repeater mode of operation. In this mode, full duplex is
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