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NXP Semiconductors
UM10883
PN7462 family Quick Start Guide - Development Kit
UM10883
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© NXP B.V. 2018. All rights reserved.
User manual
COMPANY PUBLIC
Rev. 1.6 — 14 May 2018
319816
31 of 120
To supply TVDD_IN from internal TX LDO, TVDD_IN needs to be shorted to
TVDD_OUT, this is assured by placing R189 jumper resistor and removing R191.
Internal TX LDO is activated by software and corresponding setting is in EEPROM
configuration.
Fig 33.
Default power supply setting
5.5 Host interfaces
The PN7462AU supports interfacing one out of the four different host at the time:
•
USB 2.0 full speed with USB 3.0 hub connection capability,
•
HSUART for serial communication, supporting standards speeds from 9600 bit/s
to 115200 bit/s, and faster speed up to 1.288 Mbit/s,
•
SPI with half duplex and full duplex capability with speeds up to 7 Mbit/s
•
I2C supporting standard mode, fast mode and high-speed mode with multiple
address support.
The PN7462AU connects to host through four pads with alternate function: ATX_A,
ATX_B, ATX_C and ATX_D. These pads are routed at the JP32 8-pin header according
the following table:
Table 2. PN7462 HIF pins
Pin name
JP32
Description
ATX_A
1
HSU_RX/I2C_SCL/SPI_NSS
ATX_B
3
HSU_TX/I2C_SDA/SPI_MOSI
ATX_C
5
HSU_RTS_N/SPI_MISO/USB_DP
ATX_D
7
HSU_CTS_N/SPI_MOSI/USB_DM