参数资料
型号: IP178C-DS-R10
厂商: Electronic Theatre Controls, Inc.
英文描述: 8 Port 10/100 Ethernet Integrated Switch
中文描述: 8端口10/100以太网集成开关
文件页数: 47/93页
文件大小: 538K
代理商: IP178C-DS-R10
IP178C/IP178C LF/IP178CH/IP178CH LF
Datasheet
2.12
Serial management interface
User can access
IP178C/IP178CH
’s MII registers through serial management interface with pin MDC
and MDIO. Its format is shown in the following table. To access MII register in
IP178C/IP178CH
, MDC
should be at least one more cycle than MDIO. That is, a complete command consists of 32 bits MDIO
data and at least 33 MDC clocks. When the SMI is idle, MDIO is in high impedance.
Syatem diagram
CPU
MDIO
178C
MDC
Frame
format
Read
Operation
Write
Operation
<Idle><start><op code><PHY address><Registers address><turnaround>
<data><idle>
<Idle><01><10><A
4
A
3
A
2
A
1
A
0
><R
4
R
3
R
2
R
1
R
0
><Z0>
<b
15
b
14
b
13
b
12
b
11
b
10
b
9
b
8
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
><Idle>
<Idle><01><01><A
4
A
3
A
2
A
1
A
0
><R
4
R
3
R
2
R
1
R
0
><10>
<b
15
b
14
b
13
b
12
b
11
b
10
b
9
b
8
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
><Idle>
0
b
0
0
b
1
0
b
2
0
b
3
0
b
4
0
b
5
0
b
6
0
b
7
1
b
8
1
b
9
0
b
1
0
0
b
1
1
1
b
1
2
1
b
1
3
0
b
1
4
0
b
1
5
0
1
0
R
0
0
R
1
0
R
2
0
R
3
0
R
4
1
A
0
0
A
1
0
A
2
0
A
3
0
A
4
1
0
1
0
1..1
idle
start
op
code
PHY address =
01h
Reg address =
00h
TA
Register data
idle
write
z
z
0
b
0
0
b
1
0
b
2
0
b
3
0
b
4
0
b
5
0
b
6
0
b
7
1
b
8
0
b
9
0
b
1
0
0
b
1
1
1
b
1
2
1
b
1
3
0
b
1
4
0
b
1
5
0
Z
0
R
0
0
R
1
0
R
2
0
R
3
0
R
4
1
A
0
0
A
1
0
A
2
0
A
3
0
A
4
0
1
1
0
idle
start
op
code
read
PHY address =
01h
Reg address =
00h
TA
Register data
idle
z
z
z
MDC
MDIO
MDC
MDIO
1..1
1..1
1..1
Copyright
2004, IC Plus Corp.
47/93
June 21, 2007
IP178Cx-DS-R12
相关PDF资料
PDF描述
IP178C-DS-R01 8 Port 10/100 Ethernet Integrated Switch
IP178C-DS-R02 8 Port 10/100 Ethernet Integrated Switch
IP178C 8 Port 10/100 Ethernet Integrated Switch
IP178CH 8 Port 10/100 Ethernet Integrated Switch
IP178CHLF 8 Port 10/100 Ethernet Integrated Switch
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