Sun Microsystems 220R service manual Ethernet diagnostic performs the following tests

CODE EXAMPLE 7–1

Enter (0-11 tests, 12 -Quit, 13 -Menu) ===> 1

TEST='all_dma/ebus_test'

SUBTEST='dma_reg_test'

SUBTEST='dma_func_test'

Enter (0-11 tests, 12 -Quit, 13 -Menu) ===>

7.6.5Ethernet

The Ethernet diagnostic performs the following tests.

TestFunction

Resets the Ethernet channel. my_channel_reset

hme_reg_test Performs walk-one on the following registers set: global register 1, global register 2, bmac xif register, bmac tx register, and the mif register.

Performs Ethernet channel engine internal loopback.

MAC_internal_loopback_test

Enables the 10BASE-T data present at the transmit MII data inputs to be 10_mb_xcvr_loopback_test

routed back to the receive MII data outputs.

Enables MII transmit data to be routed to the MII receive data path. 100_mb_phy_loopback_test

Forces the twisted-pair transceiver into loopback mode. 100_mb_twister_loopback_test

The following example shows the Ethernet diagnostic output message.

CODE EXAMPLE 7–2

Enter (0-11 tests, 12 -Quit, 13 -Menu) ===> 2

TEST='ethernet_test'

SUBTEST='my_channel_reset'

SUBTEST='hme_reg_test'

SUBTEST='global_reg1_test'

SUBTEST='global_reg2_test'

SUBTEST='bmac_xif_reg_test'

(continued)

Diagnostics and Troubleshooting 199