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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMS570LS0332PZ датащи(PDF) 94 Page - Texas Instruments |
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TMS570LS0332PZ датащи(HTML) 94 Page - Texas Instruments |
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94 / 110 page  EQEPA VIM EQEPINTn EQEP Module I/O MUX CTRL EQEPENCLK EQEPIO EQEPI VBUSP Interface VCLK EQEPB EQEPIOE EQEPSO EQEPS EQEPSOE NHETnDIS_SEL EQEP CLK GATE CDDISx.9 VCLK ACK CLKSTOP_REQ SYS_nRST NHET VCLK2 nDIS GIOA[5] EQEPERR nEQEPERR _SYNC TMS570LS0432, TMS570LS0332 SPNS186B – OCTOBER 2012 – REVISED JUNE 2015 www.ti.com 7.8 Enhanced Quadrature Encoder (eQEP) Figure 7-14 shows the eQEP module interconnections on the device. Figure 7-14. eQEP Module Interconnections 7.8.1 Clock Enable Control for eQEPx Modules The device level control of the eQEP clock is accomplished through the enable/disable of the VCLK clock domain for eQEP only. This is realized using bit 9 of the CLKDDIS register. The eQEP clock source is enabled by default. 7.8.2 Using eQEPx Phase Error The eQEP module sets the EQEPERR signal output whenever a phase error is detected in its inputs EQEPxA and EQEPxB. This error signal from both the eQEP modules is input to the connection selection multiplexor. As shown in Figure 7-14, the output of this selection multiplexor is inverted and connected to the N2HET module. This connection allows the application to define the response to a phase error indicated by the eQEP modules. 7.8.3 Input Connections to eQEPx Modules The input connections to each of the eQEP modules can be selected between a double-VCLK- synchronized input or a double-VCLK-synchronized and filtered input, as shown in Table 7-17. Table 7-17. Device-Level Input Synchronization CONTROL FOR DOUBLE-SYNCHRONIZED CONTROL FOR DOUBLE-SYNCHRONIZED INPUT SIGNAL CONNECTION TO eQEPx AND FILTERED CONNECTION TO eQEPx eQEPA PINMMR8[0] = 1 PINMMR8[0] = 0 and PINMMR8[1] = 1 eQEPB PINMMR8[8] = 1 PINMMR8[8] = 0 and PINMMR8[9] = 1 eQEPI PINMMR8[16] = 1 PINMMR8[16] = 0 and PINMMR8[17] = 1 eQEPS PINMMR8[24] = 1 PINMMR8[24] = 0 and PINMMR8[25] = 1 94 Peripheral Information and Electrical Specifications Copyright © 2012–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: TMS570LS0432 TMS570LS0332 |
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