TAS1020B vs TMS320C5533 Comparison

See also: TUSB3200A vs TMS320C5533 Comparison

Overview

The TAS1020B USB Streaming Controller is not recommended for new designs (NRND). However, the device, tool, or software continues to be in production to support existing customers. TI does not recommend using this part in a new design. TI encourages designers to consider alternative products for new designs, such as the TMS320C5533.

The TMS320C5533 device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.

TAS1020B

The TAS1020B integrated circuit (IC) is a universal serial bus (USB) peripheral interface device designed specifically for applications that require isochronous data streaming. Applications include digital speakers, which require the streaming of digital audio data between the host PC and the speaker system via the USB connection. The TAS1020B device is fully compatible with the USB Specification Version 1.1 and the USB Audio Class 1.0 Specification.

The TAS1020B uses a standard 8052 microcontroller unit (MCU) core with on-chip memory. The MCU memory includes 8K Bytes of program memory ROM that contains a boot loader program. At initialization, the boot loader program downloads the application program code to a 6,016 Byte RAM from either the host PC or a nonvolatile memory on the printed-circuit board (PCB).

TMS320C5533

The TMS320C5533 is a member of the {{#tiwikiurl:C5532/33/34/35 Family|C5532/33/34/35 Family}} of Ultra-low power 16-bit, fixed-point {{#tiwikiurl:Category:C5000|C5000}} DSPs.

The TMS320C5533 DSP includes an on-chip USB controller that is complaint with the Universal Serial Bus Specification version 2.0. The TMS320C5533 can act as a slave device for USB Control, Bulk, Interrupt, and Isochronous transactions and supports the USB Audio Class, USB Mass Storage Class, USB HID Class, etc.

TMS320C5533 USB Source Code

CSL Examples

TMS320C5533 USB source code and examples are available from the C55 Low Power Chip Support Library.

C5000 Connected Audio Framework

The {{#tiwikiurl:C5000 Connected Audio Framework|C5000 Connected Audio Framework}} demonstrates the USB Audio Class and HID Class running on the DSP.

• All Features of the C5000 Connected Audio Framework are listed {{#tiwikiurl:C5000 Connected Audio Framework#Features|here}}

• USB full-speed operation (Device is slave)

• Audio Device Class 1.0 compliant
  • Audio Record
    • 16-bit PCM
    • 16 kHz or 48 kHz sampling rate (compile-time option)
    • Mono
    • Mute control
    • Asynchronous synchronization
  • Audio Playback
    • 16-bit PCM
    • 48/16 kHz sampling rate
    • Stereo/mono
    • Mute and volume control
    • Adaptive synchronization

• HID
  • Playback mute
  • Playback volume up / down
  • Record mute

TMS320C5533 Development Tool

These {{#tiwikiurl:CCS|Code Composer Studio}} projects can be evaluated on the {{#tiwikiurl:C5535#eZdsp|C5535 eZdsp}} (TI Tool Page)

Device Comparison

Overview

• TAS1020B:
  • Designed specifically for isochronous data streaming
  • Example application: USB Speaker
• TMS320C5533:
  • Designed as general purpose 16-bit, fixed-point, ultra low-power DSP
  • Highly optimized high performance and low power C55x DSP core
  • Configurable USB2.0 peripheral
  • Many more peripherals (4 DMA controllers, 2 eMMC/SD/SDHC/SDIO controllers, UART, I2C, 4 I2S channels, SPI, GPIOs, Timers/ Watchdog, RTC)
  • Example applications:
    • USB Speaker
    • Wireless Audio Devices (e.g., Headsets, Microphones, Speakerphones)
    • Echo Cancellation Headphones
    • Portable Medical Devices
    • Voice Applications
    • Industrial Controls
    • Fingerprint Biometrics
    • Software-defined Radio

Core

• TAS1020B:
  • Standard 8052 Core
  • 8K Bytes ROM containing bootloader, 6,016 Bytes program RAM, 256 Bytes data RAM
• TMS320C5533:
  • C55xx Rev 3.3 Core
  • 128K Bytes of ROM containing bootloader, 128K Bytes of combined program and data RAM

USB Compliance

• TAS1020B:
  • USB Specification Version 1.1 compliant
  • USB Audio Class 1.0 compliant
• TMS320C5533:
  • USB Specification version 2.0 compliant
  • USB Audio Class 1.0 compliant (when running Connected Audio Framework)

USB Features

• TAS1020B:
  • 12 Mb/s (full speed)
  • Control Endpoint + 7 IN endpoints and 7 OUT endpoints
  • Supports all transfer types (control, bulk, interrupt, and isochronous)
• TMS320C5533:
  • 12 Mb/s (full speed) and 480 Mb/s (high speed)
  • Control Endpoint + 4 IN endpoints and 4 OUT endpoints
  • Supports all transfer types (control, bulk, interrupt, and isochronous)

Codec Port

• TAS1020B:
  • C-Port supports industry standard serial interface protocols - AC'97 Rev 1.x, Rev 2.x, and several I2S modes
  • 1 configurable 6-pin port
• TMS320C5533:
  • 4 I2S ports available (pin muxing applies)
  • I2S/Left-justified and DSP serial data communication formats with a data delay of 1 or 2 bits, adjustable polarities

Non Volatile Memory Requirements

• TAS1020B:
  • Requires external I2C EEPROM on PCB to bootload code
  • 24C32 and 24C64 EEPROMs are supported
• TMS320C5533:
  • Requires external memory on PCB to bootload code
  • 16-bit SPI EEPROM, 24-bit SPI serial flash, I2C EEPROM, SD/SDHC/eMMC/moviNAND, UART, and USB are supported boot sources

DMA

• TAS1020B:
  • 1 DMA controller with 2 channels
  • Each DMA channel can support 1 USB isochronous endpoint
  • Circular programmable FIFO used for isochronous audio data streaming
• TMS320C5533:
  • 1 USB CPPI 4.1 DMA controller with 4 TX and 4 RX DMA channels
  • 4K Bytes FIFO to dynamically allocate to all endpoints
  • Single data transfer size up to 4M Bytes
  • Additional 4 DMA controllers with 4 channels each for non-USB transfers (ie. I2S to internal memory)

Clocking & Synchronization

• TAS1020B:
  • On-chip PLL and ACG
  • Supports USB synchronization modes (asynchronous, synchronous, and adaptive)
  • 6 MHz external oscillator required
  • ACG can generate Codec MCLK - monitored by MCU to synchronize sample rate conversion of data codec to USB frame rate
  • Supports asynchronous operation with external MCLK source to C-port and codec
• TMS320C5533:
  • On-chip PLL for system clock, Separate On-chip PLL for USB clock
  • ASRC (Asynchronous Sample Rate Converter) - Adaptive Isochronous is used on playback. There is an ASRC in the playback path (when running Connected Audio Framework)
  • Asynchronous synchronization is used on record. Sample rate conversion for the record path is performed on the Host (when running Connected Audio Framework)
  • 12 MHz external oscillator required for USB (12MHz clock can source system clock PLL)
  • 32,768 Hz external RTC oscillator recommended (can source system clock PLL)
  • For USB synchronization, the DSP does not generate Codec MCLK - external clock required for codec (codec generates I2S clock - DSP is I2S slave)

Other Peripherals

• TAS1020B:
  • 1 I2C Master only (no multi-master bus support)
  • 2 GPIO Ports (8 bits on P1, 6 bits on P3 - shared with other MCU signals)
  • UART shared with GPIO P3
• TMS320C5533:
  • 1 I2C multi-master and slave interface with 7-bit and 10-bit addressing modes
  • 2 serial buses each configurable to support 1 eMMC/SD/SDHC/SDIO controller, 1 I2S bus interface & 2 GPIOs, or 6 GPIOs
  • 1 21-pin parallel port with configurable mapping of I2S2, I2S3, UART, SPI, and GPIO signals to 21 signals of the external parallel port pins
  • 3 32-bit timers with 16-bit prescaler; one timer supports watchdog functionality
  • 1 RTC

Process

• TAS1020B:
  • .25 um CMOS technology
  • Core Supply: 3.3V
  • IO Supply: 3.3V
• TMS320C5533:
  • 90 nm CMOS technology
  • Core Supply: 1.05V, 1.3V
  • IO Supply: 1.8V, 2.5V, 2.8V, 3.3V

Package

• TAS1020B:
  • 48-pin TQFP
• TMS320C5533:
  • 144-pin MicroStar BGA, .8mm pitch

Frequently Asked Questions

See the FAQ for the Connected Audio Framework {{#tiwikiurl:C5000 Connected Audio Framework#Frequently Asked Questions|here}}

Q: Does the TMS320C5533 have the same package as the TAS1020B?

• A: No, the TMS320C5533 is available in 144-pin MicroStar BGA, .8mm pitch package, whereas the TAS1020B is available in a 48-pin TQFP package.

Q: Is the TMS320C5533 pin to pin compatible with the TAS1020B?

• A: No, see package differences above

Q: Are the USB specs the same between TMS320C5533 and TAS1020B?

• A: No, the TMS320C5533 device supports USB 2.0 High Speed (slave only), whereas the TAS1020B supports USB 1.0

Q: Does the TMS320C5533 support as many audio endpoints as the TAS1020B?

• A: No, the TMS320C5533 device supports up to 4 IN endpoints and 4 OUT endpoints in addition to the control endpoint, whereas the TAS1020B supports 7 IN endpoints and 7 OUT endpoints in addition to the control endpoint.

Q: How does synchronization differ between the TMS320C5533 and TAS1020B?

• A: The TMS320C5533 device running the Connected Audio Framework utilizes an Asynchronous Sample Rate Converter (ASRC) to synchronize USB sample rate to codec sample rate. The TAS1020B uses an adaptive clock generator (ACG) to generate a master clock output signal synchronized to the USB frame rate - used by the C-port and the codec.

Q: Does the TMS320C5533 have the same core processor as the TAS1020B?

• A: No, the TMS320C5533 device uses TI's C55x Rev 3.3 16-bit core and instruction set, whereas the TAS1020B device uses a standard 8052 8-bit core.

Q: Does the TMS320C5533 have the same memory as the TAS1020B?

• A: No, the TMS320C5533 device includes 128K Bytes of ROM that contains a boot loader program and 128K Bytes of combined program and data memory, whereas the TAS1020B includes 8K Bytes of ROM that contains a boot loader program, 6,016 Bytes of program memory RAM, and 256 Bytes of internal data RAM.

Q: Does the TMS320C5533 have the same peripherals as the TAS1020B?

• A: No, the TMS320C5533 device includes many peripherals such as (GPIO, I2C, 4 I2S buses, SPI, UART, eMMC/SD, LCD, FFT Hardware Accelerator), whereas the TAS1020B supports I2C, 2 GPIO ports (8 bits on P1, 6 bits on P3 - shared with other MCU signals), and UART.

Q: Can the TMS320C5533 generate the clock for an audio codec?

• A: No, the TMS320C5533 device requires an external crystal to clock an off-chip audio codec (eg. AIC3254)