100VG-AnyLAN Training

The following describes what the driver must do to successfully train:

1)Assert the INTEN bit in the TLPHY_ctl register to enable MII interrupts to ThunderLAN from the voice grade (VG) PHY

2)Ensure that ThunderLAN is not in copy all frames mode, copy short frames mode, or broadcast mode (CAF, CSF, and NOBRX bits in the NetCmd reg- ister)

3)Disable the multicast addresses contained in the HASH registers

4)Set the general purpose address register AREG0 to 0x000000000000h so that ThunderLAN may receive the training frames. Note that the training frame contains a destination address of 0.

5)Determine if ThunderLAN is currently transmitting as it enters the training procedure. If so, stop the transmitter.

a)If transmitting:

i)Set up a deadman timer before halting the transmitter (10 s)

ii)Assert the Tx STOP interrupt by asserting the MASK5 bit in the NetMask register

iii)Issue a Tx STOP command by setting the STOP bit in the HOST_CMD register with the appropriate channel set

iv)Exit the routine and the service interrupt when the transmitter stops

b)If not transmitting, do not use STOP

6)At this point, use the following steps to build the training frame in a buffer:

J Read all the statistics registers to clear them

J Move the pointer to the training frame buffer

J Set the destination address to NULL as specified in 802.12

J Set the source address to your adapter's source address

J Set the Req config field to the appropriate options

J Fill in the rest of the training frame (two bytes in the Allow config field + 675 bytes of data) with NULLs

J Setup the Tx list with the training buffer's pointer and size in prepara- tion for a Tx GO command

7)Request the beginning of the training period by clearing the TRFAIL bit and asserting the TRIDL bit in the TLPHY_ctl register.

TNETE211 100VG-AnyLAN Demand Priority Physical Media Independent (PMI) Interface

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Texas Instruments TNETE211, TNETE110A, TNETE100A manual 100VG-AnyLAN Training

TNETE110A, TNETE211, TNETE100A specifications

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