JAJSR96A September 2023 – April 2024 DP83TC811-Q1
PRODUCTION DATA
Test mode 4 evaluates the transmitter distortion. In test mode 4, the DP83TC811-Q1 transmits the sequence of symbols generated by Equation 1:
The bit sequences, x0n and x1n, are generated from combinations of the scrambler in accordance to and :
Example streams of the 3-bit nibbles are shown in Table 7-2.
x1n | x0n | PAM3 SYMBOL |
---|---|---|
0 | 0 | 0 |
0 | 1 | +1 |
1 | 0 | 0 |
1 | 1 | –1 |
Test mode 4 is enabled by setting bits[15:13] = 0b100 in TEST_CTRL register.