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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LAN89730 датащи(PDF) 47 Page - Microchip Technology |
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LAN89730 датащи(HTML) 47 Page - Microchip Technology |
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47 / 218 page  2013-2015 Microchip Technology Inc. DS60001348A-page 47 LAN89730 4.3.3 USB VENDOR COMMANDS The device implements several vendor specific commands in order to access CSRs and efficiently gather statistics. The vendor commands allow direct access to Systems CSRs and MAC CSRs. 4.3.3.1 Register Write Command The commands allows the host to write a single register. Burst writes are not supported. All writes are 32-bits. 4.3.3.2 Register Read Command The commands allows the host to read a single register. Burst reads are not supported. All reads return 32-bits. Note: When in the Normal state, accesses to the MAC CSRs are stalled. TABLE 4-33: FORMAT OF REGISTER WRITE SETUP STAGE Offset Field Value 0h bmRequestType 40h 1h bRequest A0h 2h wValue 00h 4h wIndex {0h, CSR Address[11:0]} 6h wLength 04h TABLE 4-34: FORMAT OF REGISTER WRITE DATA STAGE Offset Field 0h Register Write Data [31:0] TABLE 4-35: FORMAT OF REGISTER READ SETUP STAGE Offset Field Value 0h bmRequestType C0h 1h bRequest A1h 2h wValue 00h 4h wIndex {0h, CSR Address[11:0]} 6h wLength 04h TABLE 4-36: FORMAT OF REGISTER READ DATA STAGE Offset Field 0h Register Read Data [31:0] |
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