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參數(shù)資料
| 型號： | RTL8305S |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 5-PORT 10/100 MBPS SINGLE CHIP SWITCH CONTROLLER |
| 中文描述： | 5端口10/100 Mbps單片開關(guān)控制器 |
| 文件頁數(shù)： | 13/24頁 |
| 文件大小： | 417K |
| 代理商： | RTL8305S |
RTL8305S
2002/02/19
Rev. 1.2
13
6.5 MII Port
6.5.1 General Description
The RTL8305S supports an extra MII interface for external devices. Two modes are implemented on the MII port, MII/SNI
PHY mode, and MII MAC mode. In MII/SNI PHY mode, a routing engine can connect ADSL or a cable modem to a LAN
through the MII port of the RTL8305S. In MII MAC mode, other types of LAN medium can be supported such as HomePNA
or 100Base-FX via the underlying physical devices through the MII port of the RTL8305S. The MII signals do not include
MTXER,MRXER and MCRS for RTL8305S. MDC/MDIO signals are also not supplied. Additional pins are used to complete
link, speed, duplex and flow-control settings described as follows.
When port4 is configured to something other than a UTP port, i.e. MII port is activated, four input pins, P4LNKSTSA#,
P4DPXSTA#, P4SPDSTA# and P4FLCTRL# are provided to determine link, duplex, and speed statuses as well as flow
control ability similar to force mode. These four pins are active low.
If P4LNKSTA#=0, the RTL8305S takes the MII port as link on, and will forward/receive packets to/from the MII port.
If P4DPXSTA#=0, the RTL8305S takes the MII port as full duplex, allowing simultaneous Tx/Rx.
If P4SPDSTA#=0, the RTL8305S takes the MII port as 100Base-TX, and outputs a 25MHz clock signal from the MTXC and
MRXC pins while in MII PHY mode. If P4SPDSTA#=1, it outputs a 2.5MHz clock signal instead. For SNI PHY mode
(P4MODE[1]=0, P4MODE[0]=0), both MTXC and MRXC are 10MHz clock output signals and P4SPDSTA# should be
floating. For MII MAC mode (P4MODE[1]=1), MTXC and MRXC are clock inputs from the underlying physical device.
It is suggested to keep P4SPDSTA# floating for SNI PHY mode and MII MAC mode for HomePNA applications, due to the
dedicated speed of these two applications.
SNI PHY
10M bps
(10M Hz)
POW ER-ON
RESET
P4M ODE[1]
P4M ODE[0]
UTP LINK ON
P4SPDSTA#
P4LNKSTA#
UTP Port
10/100Base-T
SEL_MIIMAC#=1
MII MAC
HomeLAN/100FX
(1M/2.5M/25MHz)
SEL_MIIMAC#=0
M II PHY
100M bps
(25M Hz)
M II PHY
10M bps
(2.5M Hz)
1
0
1
NO
1
YES
0
0
0
1
PHY mode
M AC mode
M II
SNI
UTP
M II
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相關(guān)代理商/技術(shù)參數(shù) |
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| RTL8309SB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SINGLE-CHIP 9-PORT 10/100MBPS SWITCH CONTROLLER |
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