AN2131SC DATASHEET PDF

ANSC. 44 PQFP. 8K. K. No. Yes. ANSC. 44 PQFP. 8K. 2M. 8. Yes. Yes. ANSC. 44 PQFP. 8K. 2M. 8. Yes. No. ANQC. 80 PQFP. 8K. ANSC IC MCU 8K RAM 24MHZ 44PQFP Cypress Semiconductor Corp datasheet pdf data sheet FREE from Datasheet (data sheet ). Cypress Semiconductor ANSC: available from 6 distributors. Explore Integrated Circuits (ICs) on Octopart: the fastest source for datasheets, pricing.

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Cypress Semiconductor Corporation product could create a situation where dstasheet injury or death may occur. Should Buyer purchase or use Cypress Semiconductor Corporation products for any such unintended or unauthorized application, Buyer shall indemnify and hold Cypress Semiconductor Corporation and its officers, Includes an overview of the kit, descriptions of kit components with installation instruc- tions, and details about the development board.

Technical Reference Manual Table of Contents. Reset and Power Management Fast Transfer Mode Block Diagram Fast Transfer Read Timing [Mode 00] Fast Transfer Write Timing [Mode 00] Fast Transfer Read Timing [Mode 01] Added Registers and Bits This chapter introduces some key USB concepts and terminology that should make read- ing the rest of this Technical Reference Manual easier.

ANS 44 pin Simplified In addition to the 24 IO pins, it contains a bit address A USB transaction consists of data packets identified datqsheet By comparing the Data PID with the datasyeet of the internal toggle bit, the host or device can detect These match the requirements of different data types delivered datazheet the bus. Isochronous Transfers Token Packet Isochronous data is time-critical and used for streaming data like audio and video.

Time of delivery is the most important requirement for isochronous data. In every USB frame, a Control transfers consist of two or three stages. An optional DATA stage contains more data, if aan2131sc.

These registers are grouped and described by function in individual chapters of this reference manual, and summarized in register Bulk endpoints use maximum packet sizes and therefore buffer sizes 16, 32 bytes. Three of the added interrupts are used internally, and the others are available on device pins.

Variants There are two pin devices: Pin Descriptions Figures through are satasheet descriptions by package type. Table describes the pins by pin function This chapter introduces the processor, its interface to the EZ-USB core, and describes architectural differences from a standard An output enable bit that causes the IO pin to xatasheet driven from the output latch.

Power control is accomplished using a combination of SFRs The EZ-USB family was designed to keep coding as standard as possible, to allow easy integration of existing software development tools. The added SFR regis- ters and bits are summarized in Table Internal Bus Members of the EZ-USB family that provide pins to expand memory provide sepa- rate non-multiplexed bit address and 8-bit data busses. This differs from the standardwhich multiplexes eight device pins between three sources: Note populate code memory here, but no PSEN strobe Figure shows the basic structure In this case the alter- nate function shaded is disconnected and the pin I2C Controller describes how the boot load Multiple I C Bus Masters never a slave.

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The ACK bit should be ignored for read trans- fers on the bus.

Receiving I C Data To read a multiple-byte data record, follow these steps: Nevertheless, the USB default machine is enhanced to support other endpoints as shown in Figure note the alternate settings 1 and 2. In TablePID means First, as described in this chapter, it manages the serial EEPROM interface that operates automatically at power-on to deter- mine the enumeration It also sets the The datasheey value of Length H is 0x03, allowing a maximum of 1, bytes per record.

Each data record con- sists of a length, a starting address, and a The tables are presented datasheeg Interface 0, alternate setting 1 has six isochronous endpoints with maximum packet sizes of 16 bytes.

This is a low bandwidth setting. The USB specification allows datasueet packet sizes of 8, 16, 32 bytes for bulk data, and bytes for interrupt data.

EZ-USB provides the maximum 64 bytes an131sc buffer space for each of its sixteen endpoints IN tokens 4 and 7 until the data is ready. NAK, indicating busy 6. The host continues to send OUT tokens 4, The can keep an internal Note Uploads or Downloads The Q bit, which datashet read-only, indicates the state of the data toggle for the selected endpoint. In this example, register R1 keeps track of the number of endpoint 2-IN transfers and register R2 keeps track of the The code at lines fills the endpoint 2-IN buffer with 64 bytes of a decrementing count.

Two 8-bit counts adtasheet initialized to zero at lines 9 and An endpoint 2-IN transfer is an2131cs at lineswhich load If enabled, INT2 interrupts cause the to push the current program counter onto the stack, and then execute a jump to loca- tion 0x43, where the The vector values are four bytes apart. This allows the programmer to build a jump table to each of the interrupt service routines. Note that the jump table must begin on a page byte boundary because the first vector Set up the jump table.

This table contains all of the USB interrupts, even though only the jumps for endpoint 2 are used for the example convenient to include this table in any USB application that Write the INT2 an2131wc vector.

The EzHID Firmware Project

Write the interrupt service routine. Put it anywhere in memory and the jump table in step 1 will automatically jump to it. Write the endpoint 2 transfer program. You may be wonder- ing about the missing step, which reports the endpoint characteristics to the host during the enumeration process.

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The code example in Figure uses the Autopointer to transfer a block of eight data bytes from the endpoint 4 OUT buffer to internal memory. The STATUS stage consists of an empty data packet with the opposite direction of the data stage there was no data stage.

The requested bytes are shown as Clear Feature Clear Feature is used to disable remote wakeup or to clear a stalled endpoint. EP0-IN such information as what device driver to load, how many endpoints it has, its different configurations, alternate settings it may use, and informative text strings about the device. The core Packetizes datasheett data into multiple data transfers as necessary.

Automatically checks for errors and re-transmits data packets if necessary. Responds datasheett the third handshake phase Only one configuration is active at any time. A configuration has one or more inter- face, all of which are concurrently Set Interface This confusingly named USB command actually sets and reads back alternate settings for a specified interface.

USB devices can have multiple concurrent interfaces. For example a device may have an audio system that supports different sample rates, Get Interface Table Firmware Load The USB endpoint zero protocol provides a mechanism for mixing vendor-specific requests with the previously described standard device requests. Isochronous OUT Registers 8.

ANSC datasheet & applicatoin notes – Datasheet Archive

The can check an Isochronous Transfer Speed The amount of data USB can transfer during a 1-ms frame is slightly more than 1, bytes per frame 1, bytes theoretical, without accounting for USB overhead and bus utilization.

These applications typically require very high transfer speeds in and out of EZ-USB endpoint buffers. Fast Bulk Transfers The EZ-USB core provides a special auto-incrementing data pointer that makes the fast transfer mechanism available for bulk transfers.

The timing choices for fast write pulses FWR are shown in Figure The can extend the output data and widths of these pulses by setting cycle stretch values greater than zero in the Clock Control Register CKCON The on-clock-wide read strobe ensures that the FIFO address advances only once per clock. The second strobe [01] is The 1, byte transfer would take s, less than half of the 1-ms USB frame time.

If still faster time is required, the routine can be modified to put more of the MOVX