公开(公告)号：US10795844B2

公开(公告)日：2020-10-06

申请号：US16430748

申请日：2019-06-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： David M. Thompson ,  Timothy D. Anderson ,  Joseph R. M. Zbiciak ,  Abhijeet A. Chachad ,  Kai Chirca ,  Matthew D. Pierson

IPC: G06F13/40 ,  G06F13/42 ,  H04L12/801 ,  G06F13/364 ,  H04L12/819

Abstract: This invention is a bus communication protocol. A master device stores bus credits. The master device may transmit a bus transaction only if it holds sufficient number and type of bus credits. Upon transmission, the master device decrements the number of stored bus credits. The bus credits correspond to resources on a slave device for receiving bus transactions. The slave device must receive the bus transaction if accompanied by the proper credits. The slave device services the transaction. The slave device then transmits a credit return. The master device adds the corresponding number and types of credits to the stored amount. The slave device is ready to accept another bus transaction and the master device is re-enabled to initiate the bus transaction. In many types of interactions a bus agent may act as both master and slave depending upon the state of the process.

公开(公告)号：US20170153890A1

公开(公告)日：2017-06-01

申请号：US15429205

申请日：2017-02-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Timothy D. Anderson ,  Joseph Zbiciak ,  Duc Quang Bui ,  Abhijeet A. Chachad ,  Kai Chirca ,  Naveen Bhoria ,  Matthew D. Pierson ,  Daniel Wu ,  Ramakrishnan Venkatasubramanian

IPC: G06F9/30 ,  G06F9/32 ,  G06F9/38 ,  G06F12/0875 ,  G06F12/0897

CPC classification number: G06F9/3016 ,  G06F9/30014 ,  G06F9/30036 ,  G06F9/30098 ,  G06F9/30112 ,  G06F9/30145 ,  G06F9/32 ,  G06F9/345 ,  G06F9/3802 ,  G06F9/3822 ,  G06F9/383 ,  G06F9/3867 ,  G06F11/00 ,  G06F11/10 ,  G06F11/1048 ,  G06F12/0875 ,  G06F12/0897 ,  G06F2212/452 ,  G06F2212/60

Abstract: This invention addresses implements a range of interesting technologies into a single block. Each DSP CPU has a streaming engine. The streaming engines include: a SE to L2 interface that can request 512 bits/cycle from L2; a loose binding between SE and L2 interface, to allow a single stream to peak at 1024 bits/cycle; one-way coherence where the SE sees all earlier writes cached in system, but not writes that occur after stream opens; full protection against single-bit data errors within its internal storage via single-bit parity with semi-automatic restart on parity error.

公开(公告)号：US20160124890A1

公开(公告)日：2016-05-05

申请号：US14530266

申请日：2014-10-31

Applicant: Texas Instruments Incorporated

Inventor： David M. Thompson ,  Timothy Anderson ,  Joseph Zbiciak ,  Abhijeet A. Chachad ,  Kai Chirca ,  Matthew D. Pierson

IPC: G06F13/42 ,  G06F13/362

CPC classification number: G06F13/4252 ,  G06F13/362

Abstract: The Multicore Bus Architecture (MBA) protocol includes a novel technique of sharing the same physical channel for all transaction types. Two channels, the Transaction Attribute Channel (TAC) and the Transaction Data Channel (TDC) are used. The attribute channel transmits bus transaction attribute information optionally including a transaction type signal, a transaction ID, a valid signal, a bus agent ID signal, an address signal, a transaction size signal, a credit spend signal and a credit return signal. The data channel connected a data subset of the signal lines of the bus separate from the attribute subset of signal lines the bus. The data channel optionally transmits a data valid signal, a transaction ID signal, a bus agent ID signal and a last data signal to mark the last data of a current bus transaction.

Abstract translation: 多核总线架构（MBA）协议包括一种为所有事务类型共享相同物理通道的新技术。 使用两个通道，交易属性通道（TAC）和交易数据通道（TDC）。 属性信道发送可选地包括交易类型信号，交易ID，有效信号，总线代理ID信号，地址信号，交易大小信号，信用支出信号和信用回报信号的总线交易属性信息。 数据通道连接总线信号线的数据子集，与总线信号线的属性子集分开。 数据信道可选地发送数据有效信号，事务ID信号，总线代理ID信号和最后数据信号，以标记当前总线事务的最后数据。

公开(公告)号：US20250045230A1

公开(公告)日：2025-02-06

申请号：US18814700

申请日：2024-08-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： David M. Thompson ,  Timothy D. Anderson ,  Joseph R.M. Zbiciak ,  Abhijeet A. Chachad ,  Kai Chirca ,  Matthew D. Pierson

IPC: G06F13/40 ,  G06F13/364 ,  G06F13/42 ,  H04L47/10 ,  H04L47/215

Abstract: This invention is a bus communication protocol. A master device stores bus credits. The master device may transmit a bus transaction only if it holds sufficient number and type of bus credits. Upon transmission, the master device decrements the number of stored bus credits. The bus credits correspond to resources on a slave device for receiving bus transactions. The slave device must receive the bus transaction if accompanied by the proper credits. The slave device services the transaction. The slave device then transmits a credit return. The master device adds the corresponding number and types of credits to the stored amount. The slave device is ready to accept another bus transaction and the master device is re-enabled to initiate the bus transaction. In many types of interactions a bus agent may act as both master and slave depending upon the state of the process.

公开(公告)号：US20220261373A1

公开(公告)日：2022-08-18

申请号：US17735255

申请日：2022-05-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： David M. Thompson ,  Timothy Anderson ,  Joseph Zbiciak ,  Abhijeet A. Chachad ,  Kai Chirca ,  Matthew D. Pierson

IPC: G06F13/42 ,  G06F13/362

Abstract: The Multicore Bus Architecture (MBA) protocol includes a novel technique of sharing the same physical channel for all transaction types. Two channels, the Transaction Attribute Channel (TAC) and the Transaction Data Channel (TDC) are used. The attribute channel transmits bus transaction attribute information optionally including a transaction type signal, a transaction ID, a valid signal, a bus agent ID signal, an address signal, a transaction size signal, a credit spend signal and a credit return signal. The data channel connected a data subset of the signal lines of the bus separate from the attribute subset of signal lines the bus. The data channel optionally transmits a data valid signal, a transaction ID signal, a bus agent ID signal and a last data signal to mark the last data of a current bus transaction.

公开(公告)号：US11321268B2

公开(公告)日：2022-05-03

申请号：US14530266

申请日：2014-10-31

Applicant: Texas Instruments Incorporated

Inventor： David M. Thompson ,  Timothy Anderson ,  Joseph Zbiciak ,  Abhijeet A. Chachad ,  Kai Chirca ,  Matthew D. Pierson

IPC: G06F13/362 ,  G06F13/42

Abstract: The Multicore Bus Architecture (MBA) protocol includes a novel technique of sharing the same physical channel for all transaction types. Two channels, the Transaction Attribute Channel (TAC) and the Transaction Data Channel (TDC) are used. The attribute channel transmits bus transaction attribute information optionally including a transaction type signal, a transaction ID, a valid signal, a bus agent ID signal, an address signal, a transaction size signal, a credit spend signal and a credit return signal. The data channel connected a data subset of the signal lines of the bus separate from the attribute subset of signal lines the bus. The data channel optionally transmits a data valid signal, a transaction ID signal, a bus agent ID signal and a last data signal to mark the last data of a current bus transaction.

公开(公告)号：US10963255B2

公开(公告)日：2021-03-30

申请号：US16297824

申请日：2019-03-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Naveen Bhoria ,  Kai Chirca ,  Timothy D. Anderson ,  Duc Bui ,  Abhijeet A. Chachad ,  Son Hung Tran

IPC: G06F9/34 ,  G06F11/00 ,  G06F12/0811 ,  G06F12/0875 ,  G06F9/30 ,  G06F9/38 ,  G06F12/0897 ,  G06F9/32 ,  G06F11/10 ,  G06F9/345

Abstract: Techniques related to executing a plurality of instructions by a processor comprising receiving a first instruction configured to cause the processor to output a first data value to a first address in a first data cache, outputting, by the processor, the first data value to a second address in a second data cache, receiving a second instruction configured to cause a streaming engine associated with the processor to prefetch data from the first data cache, determining that the first data value has not been outputted from the second data cache to the first data cache, stalling execution of the second instruction, receiving an indication, from the second data cache, that the first data value has been output from the second data cache to the first data cache, and resuming execution of the second instruction based on the received indication.

公开(公告)号：US10162641B2

公开(公告)日：2018-12-25

申请号：US15429205

申请日：2017-02-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Timothy D. Anderson ,  Joseph Zbiciak ,  Duc Quang Bui ,  Abhijeet A. Chachad ,  Kai Chirca ,  Naveen Bhoria ,  Matthew D. Pierson ,  Daniel Wu ,  Ramakrishnan Venkatasubramanian

IPC: G06F9/312 ,  G06F12/12 ,  G06F9/30 ,  G06F9/345 ,  G06F9/38 ,  G06F11/00 ,  G06F9/32 ,  G06F12/0875 ,  G06F12/0897 ,  G06F11/10

Abstract: This invention addresses implements a range of interesting technologies into a single block. Each DSP CPU has a streaming engine. The streaming engines include: a SE to L2 interface that can request 512 bits/cycle from L2; a loose binding between SE and L2 interface, to allow a single stream to peak at 1024 bits/cycle; one-way coherence where the SE sees all earlier writes cached in system, but not writes that occur after stream opens; full protection against single-bit data errors within its internal storage via single-bit parity with semi-automatic restart on parity error.

公开(公告)号：US20160188408A1

公开(公告)日：2016-06-30

申请号：US14587234

申请日：2014-12-31

Applicant: Texas Instruments Incorporated

Inventor： Timothy Anderson ,  Joseph Zbiciak ,  Abhijeet A. Chachad ,  Kai Chirca ,  Naveen Bhoria ,  David M. Thompson ,  Jonathan (Son) Hung Tran

IPC: G06F11/10 ,  G06F3/06

CPC classification number: G06F3/0673 ,  G06F3/0619 ,  G06F3/064 ,  G06F11/1048

Abstract: This invention is data processing apparatus and method. Data is protecting from corruption using an error correction code by generating an error correction code corresponding to the data. In this invention the data and the corresponding error correction code are carried forward to another set of registers without regenerating the error correction code or using the error correction code for error detection or correction. Only later are error correction detection and correction actions taken. The differing data/error correction code registers may be in differing pipeline phases in the data processing apparatus. This invention forwards the error correction code with the data through the entire datapath that carries the data. This invention provides error protection to the whole datapath without requiring extensive hardware or additional time.

Abstract translation: 本发明是数据处理装置和方法。 通过产生对应于该数据的纠错码，使用纠错码来防止数据损坏。 在本发明中，将数据和相应的纠错码转发到另一组寄存器，而不用再生纠错码或使用纠错码进行错误检测或校正。 只有以后才采取纠错检测和纠正措施。 在数据处理装置中不同的数据/纠错码寄存器可能处于不同的流水线相位。 本发明通过携带数据的整个数据路径转发具有数据的纠错码。 本发明为整个数据路径提供错误保护，而不需要大量硬件或额外的时间。

公开(公告)号：US08582384B1

公开(公告)日：2013-11-12

申请号：US13918276

申请日：2013-06-14

Applicant: Texas Instruments Incorporated

Inventor： Abhijeet A. Chachad ,  Ramakrishnan Venkatasubramanian ,  Raguram Damodaran

IPC: G11C17/18

CPC classification number: G11C7/1039 ,  G11C7/22 ,  G11C29/023 ,  G11C29/028 ,  G11C29/50012 ,  G11C2029/0401 ,  G11C2029/0409

Abstract: In an embodiment of the invention, an integrated circuit includes a pipelined memory array and a memory control circuit. The pipelined memory array contains a plurality of memory banks. Based partially on the read access time information of a memory bank, the memory control circuit is configured to select the number of clock cycles used during read latency.