JAJSE19G October 2017 – November 2022 TUSB564
PRODUCTION DATA
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Each of the TUSB564 receiver lanes has individual controls for receiver equalization. The receiver equalization gain value can be controlled either through I2C registers or through GPIOs. Table 8-7 details the gain value for each available combination when TUSB564 is in GPIO mode. These same options are also available in I2C mode by updating registers DP0EQ_SEL, DP1EQ_SEL, DP2EQ_SEL, DP3EQ_SEL, EQ1_SEL, EQ2_SEL, and SSEQ_SEL. Each of the 4-bit EQ configuration registers is mapped to the configuration pins as follows: x_SEL = {x1[1:0],x0[1:0]} where xn[1:0] are the EQ configuration pins with pin levels mapped to 2-bit values as: 0 = 00, R = 01, F = 10, 1 = 11.
Equalization Setting # | USB3.1 UPSTREAM FACING PORTS | USB 3.1 DOWNSTREAM FACING PORT | ALL DISPLAYPORT LANES | ||||||
---|---|---|---|---|---|---|---|---|---|
EQ1 PIN LEVEL | EQ0 PIN LEVEL | EQ GAIN at 2.5 GHz (dB) | SSEQ1 PIN LEVEL | SSEQ0 PIN LEVEL | EQ GAIN at 2.5 GHz (dB) | DPEQ1 PIN LEVEL | DPEQ0 PIN LEVEL | EQ GAIN at 4.05 GHz (dB) | |
0 | 0 | 0 | -0.9 | 0 | 0 | -2.4 | 0 | 0 | -0.3 |
1 | 0 | R | 0.2 | 0 | R | -1.3 | 0 | R | 1.6 |
2 | 0 | F | 1.2 | 0 | F | -0.4 | 0 | F | 3.0 |
3 | 0 | 1 | 2.2 | 0 | 1 | 0.7 | 0 | 1 | 4.4 |
4 | R | 0 | 3.1 | R | 0 | 1.5 | R | 0 | 5.4 |
5 | R | R | 4.0 | R | R | 2.5 | R | R | 6.5 |
6 | R | F | 4.8 | R | F | 3.2 | R | F | 7.3 |
7 | R | 1 | 5.6 | R | 1 | 4.0 | R | 1 | 8.1 |
8 | F | 0 | 6.3 | F | 0 | 4.8 | F | 0 | 8.9 |
9 | F | R | 7.0 | F | R | 5.5 | F | R | 9.5 |
10 | F | F | 7.5 | F | F | 6.0 | F | F | 10.0 |
11 | F | 1 | 8.1 | F | 1 | 6.6 | F | 1 | 10.6 |
12 | 1 | 0 | 8.5 | 1 | 0 | 7.1 | 1 | 0 | 11.0 |
13 | 1 | R | 9.1 | 1 | R | 7.6 | 1 | R | 11.4 |
14 | 1 | F | 9.5 | 1 | F | 8.0 | 1 | F | 11.8 |
15 | 1 | 1 | 9.9 | 1 | 1 | 8.5 | 1 | 1 | 12.1 |