Microchip Technology EVB-USB4x12, Руководство пользователя

Страница: 21 / 38

Hardware Configuration
 2019 Microchip Technology Inc. DS50002889A-page 21
FIGURE 3-7: USB TO SMBUS/I
2
C MASTER HEADER LOCATIONS
3.1.9 LED Indicators
Table 3-1 describes the LEDs included on the PCB.
3.1.10 Switches
Table 3-2 shows the switches included on the PCB.
TABLE 3-1: EVB-USB4X12 LED DESCRIPTIONS
Reference
Designator
Label Description
D1 3V3 Illuminates when board 3.3V net is powered on
D2 SPI ACTIVE SPI Activity indicator LED. Illuminates when the SPI Chip
Enable signal is asserted (pulled low).
D3 RESET Reset indicator LED. Illuminates when the RESET_N signal is
asserted (pulled low).
D4 VBUS P1 Downstream Port 1 VBUS indicator. Illuminates when VBUS
on Port 1 is present.
TABLE 3-2: EVB-USB4X12 SWITCH DESCRIPTIONS
Reference
Designator
Label Description
SW1 RESET Hub reset push button
MASTER
MASTER
UCS2114
(U2)
DATA
(TP3)
CLOCK
(TP4)