Rainbow-electronics MAX3420E Bedienungsanleitung Seite 1

General DescriptionThe MAX3420E contains the digital logic and analogcircuitry necessary to implement a full-speed USBperipheral compliant to USB spec

MAX3420EUSB Peripheral Controllerwith SPI Interface10 ______________________________________________________________________________________Note 1: Pa

MAX3420EUSB Peripheral Controllerwith SPI Interface______________________________________________________________________________________ 11Test Circu

MAX3420EUSB Peripheral Controllerwith SPI Interface12 ______________________________________________________________________________________Typical Op

(NOVBUSIRQ)) and disconnect the internal 1.5kΩpullup resistor. If the device using the MAX3420E isbus powered (through a +3.3V regulator connected toV

MAX3420E(R17) register to make INT active high, and clear thePOSINT bit to make INT active low.GPIN3–GPIN0, GPOUT3–GPOUT0 and GPXThe MAX3420E has four

In full-duplex mode (FDUPSPI=1), the MOSI and MISOpins are separate, and the MISO pin drives only when SSis low. In this mode, the first eight SCLK ed

MAX3420ESPI Half- and Full-Duplex OperationThe MAX3420E can be programmed to operate in half-duplex (a bidirectional data pin) or full-duplex (onedata

(5) To write SPI data, the SPI master keeps its outputdriver on and clocks subsequent bytes into theMOSI pin. To read SPI data, after the eighth clock

MAX3420Epre-shutdown tasks before it requests the MAX3420E toenter the power-down state by setting PWRDOWN = 1.Wakeup and USB ResumeThe MAX3420E may w

MAX3420E in a Bus-Powered ApplicationFigure 16 depicts the MAX3420E in a peripheral devicethat is powered by VBUS. This configuration is advanta-geous

The MAX3420E connects to any microprocessor using3 or 4 interface pins (Figure 1). On a simple micro-processor without SPI hardware, these can be bit-

MAX3420Ewhether the USB device is plugged in or not, it needssome way to detect a plug-in event. A comparatorinside the MAX3420E checks for a valid VB

capacitors connected to ground as close to the pins aspossible. D+, D-, and VBCOMP provide protection tothe following limits:• ±15kV using the Human B

MAX3420EUSB Peripheral Controllerwith SPI Interface22 ______________________________________________________________________________________Package In

MAX3420EUSB Peripheral Controllerwith SPI InterfaceMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied

MAX3420EUSB Peripheral Controllerwith SPI Interface_______________________________________________________________________________________ 3Functional

MAX3420EUSB Peripheral Controllerwith SPI Interface4 _______________________________________________________________________________________Pin Descri

Register DescriptionThe SPI master controls the MAX3420E by reading andwriting 21 registers (Table 1). For a complete descrip-tion of register content

MAX3420Emode, these status bits are accessed in the normalway, as register bits.The first five registers (R0–R4) access endpoint FIFOs.To access a FIF

MAX3420EUSB Peripheral Controllerwith SPI Interface_______________________________________________________________________________________ 7TQFNMAX342

MAX3420EUSB Peripheral Controllerwith SPI Interface8 _______________________________________________________________________________________ABSOLUTE M

MAX3420EUSB Peripheral Controllerwith SPI Interface_______________________________________________________________________________________ 9ELECTRICAL