PHY Test Control 1 Register
PHY_TESTDIN | Test interface 8-bit data input for programming internal registers and accessing test functionalities. |
PHY_TESTDOUT | Test interface 8-bit data output for reading data and other probing functionalities. |
PHY_TESTEN | When asserted high, it configures an address write operation on the falling edge of TESTCLK. When asserted low, it configures a data write operation on the rising edge of TESTCLK. |