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RMII slave signaling is connecting 50MHz Crystal to two XI pin of the PHY and/or MAC
RMII master signaling is connection 25MHz Crystal to one Master and provide a 50MHz reference lock through REF_CLK pin to the XI pin of the slave side. Slave side does…
Part Number: DP83TC812R-Q1
There are two type of mode that RMII can support: RMII normal mode and RMII Repeater mode:
RMII normal mode is also known as MAC to PHY RMII connection. This mode is set as default mode in DP83TC812 so it did not need…
Part Number: DP83TC811S-Q1 Other Parts Discussed in Thread: DP83TC811R-Q1
When using DP83TC811S-Q1 (or DP83TC811R-Q1), and setting the PHY into managed mode as a slave device via bootstrapping settings, if this device is connected to a master link partner…
Part Number: DS90UH949-Q1
Hello,
My customer would like to use DS90 UH949 -Q1 devices in place of the DS90 UB949A -Q1 to keep production running. In reviewing the details they have the following questions.
Can the HDCP function be disabled? If…
Possible reason can be :
- "phy_read_mmd" and "phy_write_mmd" are not supported in your kernel version (if version is old).
Possible solution to be evaluated :
- Change "phy_write_mmd" to "phy_write_mmd_indirect" function and do the corresponding…
RGMII standard asks for the introduction of delay in the clock (RX_CLK/TX_CLK) with respect to the respective data (RX_D*/RX_CTRL or TX_D*/TX_CTRL). This delay can be introduced at the source of the clock or at the receiver side. Following table should…
Other Parts Discussed in Thread: DP83TC811 Ethernet data travels effectively from one MAC to another MAC with two Ethernet PHYs in between. Each of these 4 ICs can have their own reference clocks and crystal attached to each is the usual source of this…
Part Number: DP83867IR Hi Team:
Customer side need our help to find the root cause of DP83867 Communication failure issue from one failed board .
could you please help to take a look at the attached , customer need to know How to enable MII and PCS…
Definitions:
TX_DATA[3:0], TX_CLK (naming of TI Ethernet PHYs) are transmitted by the MAC/(Repeater PHY) and RX_DATA[3:0], RX_CLK (naming of TI Ethernet PHYs) are transmitted by Ethernet PHY.
S.No
Mode
Definition
1
PHY: RX Align…
