Posted on April 04, 2012 at 07:04STE100P how to set PHY address?
Hello. Im trying to using an STE100P PHY ethernet chip (with ST32F217 MCU).
In the datasheet for STE100P i see an description for bits 7~3 PAD4:0 in PR20- XMC, XCVR Mode control register :
(page 15 of datasheet
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00001918.pdf
)
PHY Address [4:0]:
The values of the PAD[4:0] pins are latched to this register at
power-up/reset. The first PHY address bit transmitted or
received is the MSB of the address (bit 4). A station
management entity connected to multiple PHY entities must
know the appropriate address of each PHY. A PHY address of
<00000> that is latched in to the part at power-up/reset will
cause the Isolate bit of the PR0 (bit 10, register address 00h)
to be set.
After power up/reset the only way to enable or disable isolate
mode is to set or clear the Isolate bit (bit 10) PR0. After power
up/reset writing <00000> to bits [4:0] of this register will not
cause the part to enter isolate mode.
But i cant see any of PAD[4:0] pins in chip pins (
http://circuits.datasheetdir.com/204/STE100P-pinout.jpg
).
How can i set PHY address for STE100P?
#phy #ste100p
