SiFive HiFive Unleashed, Руководство по началу работы

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Net Name Direction # # Direction Net Name
PWM0_0 OUTPUT 1 2 OUTPUT PWM0_2
PWM0_1 OUTPUT 3 4 OUTPUT PWM0_3
GEMGXL_RST (Reset to
Ethernet PHY)
OUTPUT 5 6 BIDIRECTIONAL QSPI1_DQ2
FASTLINK_FAIL (Output
from Ethernet PHY)
OUTPUT 7 8 BIDIRECTIONAL QSPI1_DQ3
EN_VDD_SD (Enable
Power to SD Card)
OUTPUT 9 10 OUTPUT QSPI1_CS1
SD_CD (SD Card
Detect)
OUTPUT 11 12 OUTPUT QSPI1_CS2
(NC) NC 13 14 OUTPUT QSPI1_CS3
PWM1_0 OUTPUT 15 16 GND GND
PWM1_1 OUTPUT 17 18 OUTPUT PWM1_2
GND GND 19 20 OUTPUT PWM1_3
Table 4: 2x10 Low Speed I/O Expansion Connector Pinout
8.3 MicroUSB Connector
The MicroUSB connector provides a connection to UART0 and JTAG from a Host PC. If
needed, drivers for the FTDI FT2232H can be found at:
http://www.ftdichip.com/FTDrivers.htm
8.4 MicroSD Card Connector
The MicroSD card connector enables adding more storage with an external MicroSD card. The
connector is accessible from the Freedom U540 through SPI0.
8.5 JTAG Connector
The JTAG connector is a 1.27 mm pitch 2x5 male header (SAMTEC FTSH-105 or equivalent)
that is complaint to the RISC-V External Debug Support V0.13 specification.
More information about the RISC-V External Debug can be found at:
https://www.sifive.com/documentation/risc-v/risc-v-external-debug-support
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