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IP175DLF bảng dữ liệu(PDF) 39 Page - List of Unclassifed Manufacturers

tên linh kiện IP175DLF
Giải thích chi tiết về linh kiện  5 Port 10/100 Ethernet Integrated Switch (Loop Detection, Layer 2-4 MF Classifier, HW IGMP Snooping)
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IP175DLF bảng dữ liệu(HTML) 39 Page - List of Unclassifed Manufacturers

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IP175DLF
Datasheet
3.4
External MII
IP175DLF provides the ability of the connection to an external MAC or PHY. There are three MII interfaces
allow to connect between the switch and external MAC (or PHY), and term as MII0, 1, and 2 respectively.
These interfaces give a flexible application, such as HomePNA, SOHO router and gateway application.
Each MII interface can be configured MAC mode or PHY mode without modify layout. In addition to be
compatible with IEEE 802.3 MII interface, the interface also can configure RMII or SNI
2. Figure 3-1
illustrates an external MII application example.
A c ce ss P o in t /
Ho m e P NA /
VO IP
MA C 0
MA C 1
MA C 2
MA C 3
MA C 4
MA C 5
PH Y 0
PH Y 1
PH Y 2
PH Y 3
PH Y 4
M II0 / R M II0 /T B _ M II0
M II2 / R M II2
M II1 / R M II1
TP
CP U
Sw itc h En g in e
Figure 3-1 External MII application
I/F
mode
Int
p4ext
mii1
_dis
mii2
_en
p4mii
_sni
3
rmii_
en
4
tb_mii
0_en
mii0_ma
c_mod
mii1_phy
_mode
mii2_ma
c_mod
MII0
TBMII
5
PHY mode
MAC5
1
X
X
0
0
1
0
X
X
TBMII
MAC mode
MAC5
1
X
X
0
0
1
1
X
X
MII
PHY mode
MAC5
1
X
X
0
0
0
0
X
X
MII
MAC mode
MAC5
1
X
X
0
0
0
1
X
X
RMII
MAC
6
MAC5
1
X
X
0
1
0
X
X
X
SNI
PHY mode
MAC5
1
X
X
1
0
0
0
X
X
SNI
MAC mode
MAC5
1
X
X
1
0
0
1
X
X
MII1
MII
PHY mode
PHY4
1
0
X
X
0
0
X
1
X
MII
MAC mode
MAC4
1
0
0
X
0
0
X
0
X
RMII
PHY mode
PHY4
1
0
X
X
1
0
X
1
X
RMII
MAC mode
MAC4
1
0
0
X
1
0
X
0
X
MII2
MII
PHY mode
MAC4
1
X
1
X
0
0
X
X
0
MII
MAC mode
7
MAC4
1
X
1
X
0
0
X
X
1
RMII
MAC
MAC4
1
X
1
X
1
0
X
X
X
2 Only MII0 interface can set to SNI.
3 RMII_EN takes precedence of P4MII_SNI.
4 The rmii_en is a global pin setting to enable RMII connector for MII0-2. User can also respectively set
RMII connector from MII register 21.3[10:8].
5 The MII0 clock support speed up 50MHz to achieve the 200Mbps throughput.
6 Whether RMII0 or RMII2 can also connects to external MAC or PHY device by swapping the data path
layout.
7 It is noted that MII2 and MII1 MAC mode can’t be enabled at the same time. That is, user should not use
MII2 if pin 54 MII1_PHY_MOD is pulled low.
39/145
August 22, 2014
Copyright © 2007, IC Plus Corp.
IP175DLF-DS-R10.1



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