Texas Instruments TUSB213, Руководство пользователя, Страница: 4 / 13

TUSB213 EVM Configuration
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4 SLLU264 – August 2017
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TUSB213 Evaluation Module
• SW2 EQ:
1. Sets TUSB213 to EQ1 Level
2. Sets TUSB213 to EQ3 Level (Maximum)
3. Sets TUSB213 to EQ2 Level
Shunt across J2 Sets TUSB213 to EQ0 Level (Minimum)
• SW3 Boost:
1. VCC (High Boost)
2. NC (Mid Boost)
3. GND (Low Boost)
Table 1. TUSB213 EVM Jumper Descriptions
Jumper Functionality and Configuration
J1 213_VCC
spac 1 = TUSB213 VCC
spac 2 = GND
J2 EQ
spac 1 = EQ
spac 2 = GND
J3 SDA
spac 1 = SDA
spac 2 = GND
J4 SCL and CD
spac 1 = SCL and CD
spac 2 = GND
J5 Boost and ENA_HS
spac 1 = Boost and ENA_HS
spac 2 = GND
2.4 Selecting Equalization and Boost Level for TUSB213
The primary purpose of the TUSB213 is to restore the signal integrity of a USB high-speed channel up to
the USB connector. The platform goal is to pass the USB Near-End or Far-End Eye Mask with the
TUSB213 in the best location.
A typical use case is to place the TUSB213 close to the USB connector on a host platform in order to
pass Near-End Eye Mask testing. This includes systems where the USB connector may be placed at the
far-end of a cable.
Typical EQ and Boost recommendations based on cable length (28-AWG USB cable).
Table 2. EQ and Boost Setting Based on Cable Length
Cable Length TUSB213 EQ TUSB213 Boost
0 m–1 m EQ1 Low
1 m–2 m EQ2 Mid
2 m–3 m EQ2 Mid
3 m–5 m EQ3 High