MAX3420EEVKIT-2+ Maxim Integrated Products, MAX3420EEVKIT-2+ Datasheet

EVAL KIT FOR MAX3420E

MAX3420EEVKIT-2+

Manufacturer Part Number
MAX3420EEVKIT-2+
Description
EVAL KIT FOR MAX3420E
Manufacturer
Maxim Integrated Products
Datasheets

Specifications of MAX3420EEVKIT-2+

Main Purpose
Interface, USB 2.0 Slave
Embedded
No
Utilized Ic / Part
MAX3420E
Primary Attributes
Full Speed (12Mbps), SPI Interface, No Custom USB Drivers
Secondary Attributes
4 GPI Pushbuttons, 4 GPO LEDs
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3420E contains the digital logic and analog
circuitry necessary to implement a full-speed USB
peripheral compliant to USB specification rev 2.0. A
built-in full-speed transceiver features ±15kV ESD pro-
tection and programmable USB connect and discon-
nect. An internal serial-interface engine (SIE) handles
low-level USB protocol details such as error checking
and bus retries. The MAX3420E operates using a regis-
ter set accessed by an SPI™ interface that operates up
to 26MHz. Any SPI master (microprocessor, ASIC, DSP,
etc.) can add USB functionality using the simple 3- or
4-wire SPI interface.
Internal level translators allow the SPI interface to run at
a system voltage between 1.71V and 3.6V. USB timed
operations are done inside the MAX3420E with inter-
rupts provided at completion so an SPI master does not
need timers to meet USB timing requirements. The
MAX3420E includes four general-purpose inputs and
outputs so any microprocessor that uses I/O pins to
implement the SPI interface can reclaim the I/O pins
and gain additional ones.
The MAX3420E operates over the extended -40°C to
+85°C temperature range and is available in a 32-pin
LQFP package (7mm x 7mm) and a space-saving 24-
pin TQFN package (4mm x 4mm).
19-3781; Rev 3; 12/10
+Denotes a lead(Pb)-free/RoHS-compliant package.
*
/V denotes an automotive qualified part.
SPI is a trademark of Motorola, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX3420EETG+
MAX3420EECJ+
MAX3420EECJ/V+
EP = Exposed pad.
Cell Phones
PC Peripherals
Microprocessors and
DSPs
Custom USB Devices
Cameras
PART
________________________________________________________________ Maxim Integrated Products
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
General Description
Desktop Routers
PLCs
Set-Top Boxes
PDAs
MP3 Players
Instrumentation
Applications
PIN-PACKAGE
24 TQFN-EP*
32 LQFP
32 LQFP
USB Peripheral Controller
♦ Microprocessor-Independent USB Solution
♦ Complies with USB Specification Revision 2.0
♦ Integrated Full-Speed USB Transceiver
♦ Firmware/Hardware Control of an Internal D+
♦ Programmable 3- or 4-Wire 26MHz SPI Interface
♦ Level Translators and V
♦ Internal Comparator Detects V
♦ ESD Protection on D+, D-, and VBCOMP
♦ Interrupt Output Pin (Level or Programmable
♦ Intelligent USB Serial-Interface Engine (SIE)
♦ Built-In Endpoint FIFOs
♦ Double-Buffered Data Endpoints Increase
♦ SETUP Data Has Its Own 8-Byte FIFO, Simplifying
♦ Four General-Purpose Inputs and Four General-
♦ Space-Saving LQFP and TQFN Packages
(Full-Speed Operation)
Pullup Resistor
System Interface Voltage
Self-Powered Applications
Edge) Allows Polled or Interrupt-Driven SPI
Interface
Throughput by Allowing the SPI Master to
Transfer Data Concurrently with USB Transfers
Over the Same Endpoint
Firmware
Purpose Outputs
Automatically Handles USB Flow Control and
Double Buffering
Handles Low-Level USB Signaling Details
Contains Timers for USB Time-Sensitive
Operations So SPI Master Does Not Need to
Time Events
EP0: CONTROL (64 Bytes)
EP1: OUT, Bulk or Interrupt, 2 x 64 Bytes
(Double-Buffered)
EP2: IN, Bulk or Interrupt, 2 x 64 Bytes
(Double-Buffered)
EP3: IN, Bulk or Interrupt (64 Bytes)
with SPI Interface
L
Input Allow Independent
BUS
for
Features
1

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MAX3420EEVKIT-2+ Summary of contents

Page 1

... EP = Exposed pad. /V denotes an automotive qualified part. SPI is a trademark of Motorola, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. USB Peripheral Controller ♦ Microprocessor-Independent USB Solution ♦ ...

Page 2

USB Peripheral Controller with SPI Interface Typical Application Circuits 3.3V REGULATOR USB MAX3420E Figure 1. The MAX3420E Connects to Any Microprocessor Using Interface Pins 3.3V REGULATOR SPI 3, 4 USB MAX3420E INT Figure 2. The MAX3420E Connected ...

Page 3

V CC 1.5kΩ D+ ESD PROTECTION D- ESD VBCOMP PROTECTION MAX3420E GND _______________________________________________________________________________________ USB Peripheral Controller with SPI Interface V RES L INTERNAL POR RESET LOGIC FULL-SPEED USB TRANSCEIVER ENDPOINT BUFFERS VBUS_DET VBUS COMP GPIN VBUS_DET ...

Page 4

USB Peripheral Controller with SPI Interface PIN NAME TQFN-EP LQFP 1 1 GPOUT0 2 2 GPOUT1 18, 19 GND 5 7 GPOUT2 6 8 GPOUT3 RES SCLK ...

Page 5

PIN NAME TQFN-EP LQFP 17 22 VBCOMP GPIN0 22 30 GPIN1 23 31 GPIN2 24 32 GPIN3 9, 16, 25, — N.C. 28 — — EP Register ...

Page 6

USB Peripheral Controller with SPI Interface The first five registers (R0–R4) access endpoint FIFOs. To access a FIFO, an initial command byte sets the register address and then consecutive reads or writes keep the same register address to access subsequent ...

Page 7

TOP VIEW GPIN0 21 MAX3420E GPIN1 22 GPIN2 23 *EP GPIN3 TQFN *CONNECT EXPOSED PAD TO GND. _______________________________________________________________________________________ USB Peripheral Controller with ...

Page 8

USB Peripheral Controller with SPI Interface ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) V ......................................................................... -0. .............................................................................-0.3V to +4V L VBCOMP .................................................................-0.3V to +6V D+, D-, XI, XO ............................................-0. SCLK, ...

Page 9

ELECTRICAL CHARACTERISTICS (continued +3V to +3.6V +1.71V to +3.6V +2.5V +25°C.) (Note 1) A PARAMETER SYMBOL Single-Ended Receiver Input Low Voltage Single-Ended Receiver Input High Voltage Single-Ended Receiver Hysteresis Voltage D+, ...

Page 10

USB Peripheral Controller with SPI Interface TIMING CHARACTERISTICS V = +3V to +3.6V +1.71V to +3.6V +2.5V +25°C.) (Note PARAMETER PARAMETER SYMBOL SYMBOL USB TRANSMITTER TIMING CHARACTERISTICS D+, D- ...

Page 11

RISE Figure 6. Rise and Fall Times CSS 1 SCLK MOSI HIGH IMPEDANCE MISO Figure 8. SPI Bus Timing Diagram (Full-Duplex Mode, SPI Mode (0,0 SCLK MOSI ...

Page 12

USB Peripheral Controller with SPI Interface (V = +3.3V +3.3V +25°C Detailed Description The MAX3420E contains the digital logic and analog circuitry necessary to implement a full-speed USB peripheral that complies with the ...

Page 13

Table 2. Internal Pullup Resistor Control CONNECT VBGATE VBUS_DET (NOVBUSIRQ)) and disconnect the internal 1.5kΩ pullup resistor. If the device using the MAX3420E is bus powered (through a ...

Page 14

USB Peripheral Controller with SPI Interface pending (Figure 10). Set the POSINT bit in the PINCTL (R17) register to make INT active high, and clear the POSINT bit to make INT active low. GPIN3–GPIN0, GPOUT3–GPOUT0 and GPX The MAX3420E has ...

Page 15

SS MISO Q7 SCLK MODE 0,0 SCLK MODE 1,1 MOSI D7 Figure 14. SPI Clocking Modes In full-duplex mode (FDUPSPI = 1), the MOSI and MISO pins are separate, and the MISO pin drives only when SS is low. In ...

Page 16

USB Peripheral Controller with SPI Interface SPI Half- and Full-Duplex Operation The MAX3420E can be programmed to operate in half- duplex (a bidirectional data pin) or full-duplex (one data-in and one data-out pin) mode. The SPI master sets a register ...

Page 17

SS MISO SUSPIRQ URESIRQ SCLK MOSI REG4 REG3 Figure 15. SPI Port in Full-Duplex Mode (5) To write SPI data, the SPI master keeps its output driver on and clocks subsequent bytes into the MOSI pin. To read SPI data, ...

Page 18

USB Peripheral Controller with SPI Interface preshutdown tasks before it requests the MAX3420E to enter the power-down state by setting PWRDOWN = 1. Wakeup and USB Resume The MAX3420E may wake up in three ways while the ...

Page 19

REGULATOR MAX6349TL 4.7μF V BUS D+ USB "B" CONNECTOR D- GND Figure 16. MAX3420E in a Bus-Powered Application MAX3420E in a Bus-Powered Application Figure 16 depicts the MAX3420E in a peripheral device that is powered This configuration ...

Page 20

USB Peripheral Controller with SPI Interface V BUS D+ USB "B" CONNECTOR D- GND CERAMIC Figure 17. MAX3420E in a Self-Powered Application The V detect input, VBCOMP important BUS MAX3420E feature. Because the µP is powered whether the ...

Page 21

1MΩ 1.5kΩ DISCHARGE CHARGE-CURRENT- RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 18. Human Body ESD Test Models I 100 90% AMPERES 36.8% 10 TIME t ...

Page 22

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 22 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products ...

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