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STULPI01A датащи(PDF) 31 Page - STMicroelectronics |
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STULPI01A датащи(HTML) 31 Page - STMicroelectronics |
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31 / 44 page ![]() STULPI01A, STULPI01B ULPI registers Doc ID 14817 Rev 4 31/44 Note: 3Dh-3Fh(Read), 3Dh(Write), 3Eh(Set), 3Fh(Clear). These addresses control various power aspects of the USB transceiver. Table 15. Vendor and product ID Register Bits Access Address Value Description VENDOR_ID_LOW 7:0 rd 00h 83 h Lower byte of vendor ID. VENDOR_ID_HIGH 7:0 rd 01h 04 h Upper byte of vendor ID. PRODUCT_ID_LOW 7:0 rd 02h 4b h Lower byte of product ID number. PRODUCT_ID_HIGH 7:0 rd 03h 4f h Upper byte of product ID number. Table 16. Power control register Field name Bits Access Reset Description Reserved 0 rd/wr/s/c 0b Reserved. The link must never write a 1b to this bit. Overcurrent_PD 1 rd/wr/s/c 1b Power control of the internal overcurrent circuit. 0b: enables the overcurrent circuit. 1b: disables the overcurrent circuit. UART_DIR 2 rd/wr/s/c 0b 0b: Txd on DM and Rxd on DP 1b: Txd on DP and Rxd on DM UART_2V7 3 rd/wr/s/c 1b 0b: UART signaling at 3V3 1b: UART signaling at 2V7 Reserved 7:4 rd/wr/s/c 0b Reserved. The link must never write a 1b to these bits. |
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