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DM9102DEP датащи(PDF) 56 Page - Davicom Semiconductor, Inc.

номер детали DM9102DEP
подробное описание детали  Single Chip Fast Ethernet NIC Controller
PDF  70 Pages
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производитель  DAVICOM [Davicom Semiconductor, Inc.]
домашняя страница  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9102DEP датащи(HTML) 56 Page - Davicom Semiconductor, Inc.

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Final
Version: DM9102D-DS-F01
May 10, 2006
7.8 External MII Interface
DM9102D provides one external MII interface sharing with
all the pins with Boot ROM interface. This external MII
interface can be connected with external PHYceiver such as
Home Networking PHYceiver or other future technology
applications. This external MII interface can be set up by
hardware and software. The setup methods are listed as
below:
Test 1 (pin 37) Test 2 (pin 71)
Clkrun# (pin 36)
EECK (pin 79)
EEDO (pin 78)
Normal Operation
0
1
X
X
X
External MII mode
0
0
0
0
1/0
Note 1
Internal Test mode
1
X
X
X
X
Note 1: External MII mode
EEDO = 1(pulled high): only external PHY is selected.
EEDO= 0(floating) & MII_ Mode = 1: Select external PHY
EEDO = 0(float) & MII_ Mode = 0: Select internal PHY
Where MII_ Mode is the bit 18 of CR6
7.8.1 The Sharing Pin Table
(o): output, (i): input, (b): bi-direction
Normal Operation
External MII Interface
Boot ROM interface
External MII interface
TEST2=1
TEST2= 0
Pin
62
MD0/EEDI
MII_MDIO/EEDI(b)
63
MD1
MII_RXD2 (i)
64
MD2
MII_RXD1 (i)
65
MD3
MII_RXD0 (i)
66
MD4
MII_RXDV (i)
67
MD5
MII_RXER (i)
68
MD6
MII_CRS (i)
69
MD7
MII_RXCLK (i)
75
IDSEL2
MII_COL(i)
78
EEDO
MII_TXD0/EEDO(o)
79
EECK
MII_TXD1/EECK (o)
83
LED_MODE
MII_TXEN(o)
84
REQ2#
MII_TXCLK (i)
87
TRF_LED
MII_TXD2(o)
88
FDX_LED
MII_TXD3(o)
89
SPD100_LED
MII_MDC(o)
90
SPD10_LED
MII_RXD3(i)



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