參數(shù)資料
型號： TC9205M
廠商： Electronic Theatre Controls, Inc.
英文描述： 5-Port 10/100/1000 Smart Ethernet Switch
中文描述： 5端口10/100/1000智能以太網(wǎng)交換機(jī)
文件頁數(shù)： 46/51頁
文件大小： 1661K
代理商： TC9205M
TC9205M
Preliminary Data Sheet
10.4.5
Data Read Register
-
Address: 76h, 75h
Confidential.
Copyright
2003, IC Plus Corp.
46/51
July 30, 2003
TC9205M-DS-R03
7 6 5 4 3 2 1 0
75h
DataReadReg
DataReadReg
15 14 13 12 11 10 9 8
76h
Bit(s)
15 – 0
DataReadReg
Write Operation.
Before starting a write operation the following registers need to be set :
PhyAddress
– written with MDIO device address
RegAddress
– written with MDIO register address
DataWriteReg
– data word to be write to selected register
The write operation is then started by performing a write to
IOControl
register with bit 0 cleared.
Read Operation.
Before starting a read operation the following registers need to be set :
PhyAddress
– written with MDIO device address
RegAddress
– written with MDIO register address
The write operation is then started by performing a write to
IOControl
register with bit 0 set.
Subsequently, the
IOControl
register needs to be monitored in order to detect MDIO operation error
reported via
IOControl’s
bit 2. The
ValidDataRead
bit is always read as ‘1’ unless the EEPROM line is
driven at over 1MHz speed. If no error occurred then data can be read from
DataReadReg
.
Field
Description
DataReadReg
MDIO Data Read Register
– Contains a 16 bit data word read from a PHY management register.
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