1 00:00:02,000 --> 00:00:08,690 How can we control the execution of a hardware module generated by this flow, this lecture will explain 2 00:00:08,690 --> 00:00:13,340 how to read the status of a module or command that to start its task. 3 00:00:17,640 --> 00:00:23,790 Balaklava interface protocols provide the mechanism for controlling the operation of an artificial module 4 00:00:24,060 --> 00:00:30,510 such that other modules and software applications can control an RTL module using the associated block 5 00:00:30,510 --> 00:00:31,500 level interface. 6 00:00:35,730 --> 00:00:41,190 By default, a Balaklava level interface protocol is added to the design, the ports of the block level 7 00:00:41,190 --> 00:00:49,440 interface control when the block can start processing data upon or start indicate when it is ready to 8 00:00:49,440 --> 00:00:50,610 accept new inputs. 9 00:00:50,670 --> 00:00:54,210 AP underscore already and indicate if the design is idle. 10 00:00:54,360 --> 00:00:58,140 I underscore idle or has completed operation. 11 00:00:59,070 --> 00:01:00,360 AP underscored the. 12 00:01:05,090 --> 00:01:11,450 Why does List uses the following interface types to specify whether the article is implemented with 13 00:01:11,450 --> 00:01:13,190 block level handshake signals? 14 00:01:14,130 --> 00:01:22,210 APC, TRL, one, APC, TRL, Leches, APC, Tiaro chain and s accelerate block level handshake signals 15 00:01:22,260 --> 00:01:24,690 specify the following one. 16 00:01:24,690 --> 00:01:30,240 The design kind of start to perform the operation when the operation ends, when the design is idle 17 00:01:30,240 --> 00:01:31,680 and ready for new inputs. 18 00:01:37,130 --> 00:01:43,520 You can specify the level of your protocols and the function or the function return if the key plus 19 00:01:43,520 --> 00:01:49,280 plus code does not returning value, you can easily specify the block level II protocol on the function 20 00:01:49,290 --> 00:01:57,770 return if the C C++ code uses a function, return Y to create an output port API return for the return 21 00:01:57,770 --> 00:01:58,130 value. 22 00:02:02,360 --> 00:02:09,230 The AP city elections block level II protocol is the default, the following figure shows the resulting 23 00:02:09,230 --> 00:02:11,300 article Ports and Behavior. 24 00:02:11,330 --> 00:02:18,770 When White House implements TRL on a function in this example, the function returns a value using the 25 00:02:18,770 --> 00:02:25,910 return statement and pointer, such as creates the AP return output port in the article design if the 26 00:02:25,910 --> 00:02:29,600 function return statement is not included in the C C++ code. 27 00:02:29,780 --> 00:02:31,130 This port is not created. 28 00:02:35,510 --> 00:02:42,370 When they pass, the signal is high, the module is in the recent state and cannot do anything, a low 29 00:02:42,390 --> 00:02:47,630 lying state on the apress, the signal enabled the module to accept the handshake commands. 30 00:02:47,990 --> 00:02:54,530 Now the module is idle and ready to start performing its task whenever it receives a high logic value 31 00:02:54,710 --> 00:02:56,170 on the AP starting point. 32 00:02:56,750 --> 00:03:02,870 One day we started to receive the module puts the API the signal to zero value, indicating the design 33 00:03:02,870 --> 00:03:04,130 is no longer idle. 34 00:03:05,160 --> 00:03:11,160 The module is performing its task and can receive input data and generate output data when it finishes 35 00:03:11,160 --> 00:03:17,880 its task, the AP done goes high and outputs are ready to be read by other modules or software. 36 00:03:22,660 --> 00:03:27,970 The next lecture will demonstrate the global interface signaling through a multi cycle example. 37 00:03:33,380 --> 00:03:39,910 These are our takeaway messages, software functions running on a processor or hardware modules inside 38 00:03:39,930 --> 00:03:48,190 FPGA can control or monitor a natural gas module through block level interface NPC, TRL X is the default 39 00:03:48,200 --> 00:03:49,340 block level interface. 40 00:03:53,610 --> 00:03:59,730 Download the White House high level sentence's user guide, Euge thirteen ninety nine document and in 41 00:03:59,730 --> 00:04:08,070 pages 219 to 212, the study, the AP underscore Citarella, underscore X and AP underscore citral, 42 00:04:08,100 --> 00:04:09,840 underscore chain interfaces.