Part Number: DP83822I Other Parts Discussed in Thread: OMAP-L138 Tool/software: Hello TI Team! Could you check my schematic? ETH PHY DP83822IRHB + CPU OMAP-L138 MII Connection. Thank you very much!
Board_Digital.pdf
Part Number: DP83822I Other Parts Discussed in Thread: AM3358 , Tool/software: Hi,
We use the DP83822I for the Ethernet transceiver in our AM3358 board, and now, we find our mass product have the below issue for some board:
1. The network cards can be correctly…
Part Number: DP83822I Tool/software: Hi team,
My customer is going to use DP83822 with CRS Strap Mode=2 as shown below.
In this case, does LED_1 turns on when it is both Good LINK and 100Mbps?
My customer would like to make sure that the Good LINK is th…
Part Number: DP83822I Tool/software: Hi all,
I would like to ask you two questions.
1) Is it possible to set the internal resistance connected to the line of MDIO and MDC by register or software?
2) Is it correct that the MDIO pin needs an external resistance…
Part Number: DP83822I Tool/software: Hi team,
I want LED_0 to configure as MODE4, LED_1 as MODE1. Then connect LEDs and parallel pullup or pulldown resistors with each pins.
I have two questions.
#1: In this case, does strap pin require the RP? Does strap…
Part Number: DP83822I Hello all,
After looking for information on internet, I couldn't figure out why DP83822I needs 49.9 ohm resistors to 3.3V and DP83867 doesn't need . We are facing some problems because when we power off our device, the ethernet…
Hi Hiroki!
Thank you for your patience.
More on parallel detection can be found here: Auto_Negotiation_Process_1.pdf
For False Carrier Sense, the best way would be to use an interrupt.
Reg 0x11, Bit[1] must be set high to enable event based interrupts…
Part Number: DP83822I Tool/software: Figure 7-1 from the datasheet shows VDDIO becoming stable before VAVD begins to rise. The T1 number from the 7.6 Table, says that it can be +/- 100mS. Which means that VAVD could power up before VDDIO, or they can…
Part Number: DP83822I Tool/software: Hi,
I have found a strange problem that I can't totally explain. The PHY does not answer on the MDIO interface.
Everything seemed to be correct (power, bootstrap, power-up, signal integrity and so on), however…
Part Number: DP83822I Tool/software: Hi Team,
The output of the MDC-pin and MDIO-pin is undefined(neither High nor Low) in a customer's system using the DP83822IRHBT.
An external 2.2kΩ pull-up resistor is used on the MDIO line.
Can you think…