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TUSB422 датащи(PDF) 49 Page - Texas Instruments |
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TUSB422 датащи(HTML) 49 Page - Texas Instruments |
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49 / 71 page ![]() 49 TUSB422 www.ti.com SLLSEW6 – NOVEMBER 2016 Product Folder Links: TUSB422 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 7.6.40 Receive Buffer Header Byte 1 Register (address = 0x33) [reset = 0x00] Figure 48. Receive Buffer Header Byte 1 Register 7 6 5 4 3 2 1 0 RX_BUF_HDR_BYTE_1 RU LEGEND: R/W = Read/Write; R = Read only Table 45. Receive Buffer Header Byte 1 Descriptions Bit Field Type Reset Description 7:0 RX_BUF_HDR_BYTE_1 RU 0x00 Byte 1 (bits 15:8) of USB PD message header. 7.6.41 Receive Buffer Data Object 1 Through 7 Register (address = 0x34 through 0x4F) [reset = 0x00] Figure 49. Receive Buffer Data Object 1 Through 7 Register 7 6 5 4 3 2 1 0 RX_BUFF_OBJx_BYTE_x RU LEGEND: R/W = Read/Write; R = Read only Table 46. Receive Buffer Data Object 1 Through 7 Descriptions Bit Field Type Reset Description 7 RX_BUFF_OBJy_BYTE_x R 0x00 RX Byte x. 7.6.42 Transmit Register (address = 0x50) [reset = 0x00] The TUSB422 clears this register after packet is transmitted regardless of outcome. Figure 50. Transmit Register 7 6 5 4 3 2 1 0 Reserved RETRY_COUNTER Reserved TX_SOP_MESSAGE RW RWU RW RWU LEGEND: R/W = Read/Write; R = Read only Table 47. Transmit Register Descriptions Bit Field Type Reset Description 7:6 Reserved RW 00 Shall be set to zero by sender and ignored by receiver 5:4 RETRY_COUNTER RWU 00 00b: No message retry is required 01b: Automatically retry message transmission once 10b: Automatically retry message transmission twice 11b: Automatically retry message transmission three times 3 Reserved RW 0 Shall be set to zero by sender, shall be ignored by receiver 2:0 TX_SOP_MESSAGE RWU 000 000b: Transmit SOP 001b: Transmit SOP' 010b: Transmit SOP'' 011b: Transmit SOP_DBG’ 100b: Transmit SOP_DBG’’ 101b: Transmit Hard Reset 110b: Transmit Cable Reset 111b: Transmit BIST Carrier Mode 2 |
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