ZHCSLL4 December 2021 DP83TC814R-Q1 , DP83TC814S-Q1
PRODUCTION DATA
Test mode 1 evaluates transmitter droop. In test mode 1, the DP83TC814-Q1 transmits ‘+1’ symbols for a minimum of 600 ns followed by ‘–1’ symbols for a minimum of 600 ns. This pattern is repeated continuously until the test mode is disabled.
Test mode 1 is enabled by setting bits[15:13] = 0b001 in the MMD1_PMA_TEST_MODE_CTRL Register (0x1836).