AM2634: Bootstrap configuration for DP83822 in RMII mode

Rohal

Intellectual 495 points

Part Number: AM2634

Tool/software:

Dear Team,

I want to use DP83822 in RMII mode

kindly suggest Bootstrap pins as mention below, please fill the sheet

Required information
Pins PU/PD Strap mode Value
COL
RX_D0
Rx_D1
Rx_D2
Rx_D3
LED0
LED1
CRS
Rx_ER
Rx_DV

Requirements
PHY1 Address 0x0000
PHY2 Address 0x0011
Mode of Operation 100BASE-TX, Full-Duplex, Auto-MDIX
LED0 Configuration Blink Tx/Rx Activity
LED1 Configuration ON for 100 Mbps SPEED
MAC configuration RMII Master

Questions
1. Can we separate the link and Tx/Rx leds
2. Does speed led work in auto MDIx mode
3. How to enable auto negotiation

over 1 year ago

0 Gerome Cacho over 1 year ago

TI__Mastermind 39795 points

Hello,

We have our DP83822 checklist which has a strap options tool. This tool can help you determine what options you would like for your design.

Regarding questions:

- LEDs/GPIOs can be reconfigured via registers to the specific function you would like

- Speed and Auto-MDIX are independent of each other, so this should be possible

- Auto-Negotiation can be set via strapping.

Sincerely,

Gerome

0 Rohal over 1 year ago in reply to Gerome Cacho

Intellectual 495 points

Gerome Cacho,

thanks for your feedback and support,

LED_1 can be configure by LEDCFG1 register and we are trying to configure LED_0 by Bootstrap pin(CRS in mode 2/3)

now please confirm these pins configurations, Is it ok ?

0 Gerome Cacho over 1 year ago in reply to Rohal

TI__Mastermind 39795 points

Hello,

Both LEDs can be configured via bootstrapping as well as registers. For control of LED1, please also see Reg 0x462.

Sincerely,

Gerome

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AM2634: Bootstrap configuration for DP83822 in RMII mode