User manual TEXAS INSTRUMENTS TUSB3200A DATA MANUAL REV A

[. . . ] TUSB3200A USB Streaming Controller (STC) Data Manual PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Literature Number: SLES018A October 2001 ­ Revised July 2010 TUSB3200A SLES018A ­ OCTOBER 2001 ­ REVISED JULY 2010 www. ti. com Contents 1 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1. 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] With each USB start-of-frame (SOF) signal or pseudo-start-of-frame (PSOF) signal, the capture counter value is stored into the 16-bit capture register. This value is valid until the next SOF or PSOF signal occurs (1 ms). The MCU can read the 16-bit capture register value by reading the ACGCAPH and ACGCAPL registers. 2. 2. 9 Microcontroller Unit The 8052 core used in the TUSB3200A is based on the industry standard 8052 MCU and is software compatible with the 8052, 8032, 80C52, 80C53, and 87C52 MCUs. Therefore, see a standard 8052 data manual for more details if needed. 34 Description Submit Documentation Feedback Product Folder Link(s): TUSB3200A Copyright © 2001­2010, Texas Instruments Incorporated TUSB3200A www. ti. com SLES018A ­ OCTOBER 2001 ­ REVISED JULY 2010 2. 2. 10 External MCU Mode Operation The external MCU mode of operation is provided for firmware development using an in-circuit emulator (ICE). In the external MCU mode, the internal 8052 MCU core of the TUSB3200A is disabled. Also in the external MCU mode, the GPIO ports are used for the external MCU data, address, and control signals. See Section 1. 7, Terminal Functions ­ External MCU Mode, for details. In this mode, the external MCU or ICE is able to access the memory mapped IO registers, the USB configuration blocks and the USB buffer space. See Section 1. 8, Device Operation Modes, for information regarding the various modes of operation. Texas Instruments has developed the TUSB3200A evaluation module (EVM) to allow customers to develop application firmware and to evaluate device performance. The EVM board provides a 40-pin dip socket for an ICE in addition to headers to allow expansion of the system in a variety of ways. 2. 2. 11 Interrupt Logic The 8052 MCU core used in the TUSB3200A supports all the standard interrupt sources. The five standard MCU interrupt sources are timer 0, timer 1, serial port, external 1 (INT1), and external 0 (INT0). All of the additional interrupt sources within the TUSB3200A device are ORed together to generate the INT0 signal to the MCU. See the interrupt vector register for more details on the other TUSB3200A interrupt sources. The other interrupt sources are the eight USB in endpoints, the eight USB out endpoints, USB function reset, USB function suspend, USB function resume, USB start-of-frame, USB pseudo start-of-frame, USB setup stage transaction, USB setup stage transaction over-write, codec port interface transmit data register empty, codec port interface receive data register full, I2C interface transmit data register empty, I2C interface receive data register full, and the external interrupt input. The interrupts for the USB in endpoints and USB out endpoints can not be masked. An interrupt for a particular endpoint occurs at the end of a successful transaction to that endpoint. A status bit for each in and out endpoint also exists. However, these status bits are read only, and therefore, these bits are intended to be used for diagnostic purposes only. After a successful transaction to an endpoint, both the interrupt and status bit for an endpoint will be asserted until the interrupt is cleared by the MCU. The USB function reset, USB function suspend, USB function resume, USB start-of-frame, USB pseudo start-of-frame, USB setup stage transaction, and USB setup stage transaction over-write interrupts can all be masked. A status bit for each of these interrupts also exists. [. . . ] All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. [. . . ]