US 12,093,690 B2
Look-up table read
Naveen Bhoria, Plano, TX (US); Dheera Balasubramanian Samudrala, Richardson, TX (US); Duc Bui, Grand Prairie, TX (US); and Alan Davis, Sugar Land, TX (US)
Assigned to Texas Instruments Incorporated, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Sep. 26, 2022, as Appl. No. 17/952,517.
Application 17/952,517 is a continuation of application No. 16/570,640, filed on Sep. 13, 2019, granted, now 11,455,169.
Claims priority of provisional application 62/853,120, filed on May 27, 2019.
Prior Publication US 2023/0043776 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 9/30 (2018.01); G06F 9/38 (2018.01); G06F 9/445 (2018.01); G06F 12/02 (2006.01); G06F 16/31 (2019.01); G06F 16/41 (2019.01); G06F 16/901 (2019.01); G11C 11/409 (2006.01); G06F 3/06 (2006.01); G06F 9/355 (2018.01); G06F 12/0811 (2016.01)
CPC G06F 9/30145 (2013.01) [G06F 9/30007 (2013.01); G06F 9/3001 (2013.01); G06F 9/30032 (2013.01); G06F 9/30043 (2013.01); G06F 9/30101 (2013.01); G06F 9/30105 (2013.01); G06F 9/3818 (2013.01); G06F 9/44505 (2013.01); G06F 12/0246 (2013.01); G06F 12/0292 (2013.01); G06F 16/322 (2019.01); G06F 16/41 (2019.01); G06F 16/9017 (2019.01); G11C 11/409 (2013.01); G06F 3/0647 (2013.01); G06F 9/30167 (2013.01); G06F 9/355 (2013.01); G06F 12/0811 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a memory configured to store a set of tables;
an intermediate register coupled to the memory;
a butterfly network coupled to the intermediate register;
a destination register coupled to the intermediate register;
a processor functional unit coupled to the memory; and
a decoder coupled to the processor functional unit and configured to:
receive an instruction that specifies a set of indices and the destination register;
based on the instruction, cause the processor functional unit to:
read a set of table elements from the set of tables by, for each table of the set of tables, reading a respective subset of the set of table elements based on a respective index of the set of indices; and
store the set of table elements in the intermediate register in a first order; and
based on the instruction, cause the butterfly network to:
reorder the set of table elements to be in a second order; and
store the set of table elements in the destination register in the second order.