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TUSB2136 数据表(PDF) 25 Page - Texas Instruments |
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TUSB2136 数据表(HTML) 25 Page - Texas Instruments |
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25 / 50 page ![]() 2–13 2.5.4 OEPBCNT_0: Output Endpoint-0 Byte Count Register 7 6 5 4 3 210 NAK RSV RSV RSV C3 C2 C1 C0 R/W R/O R/O R/O R/W R/W R/W R/W BIT NAME RESET FUNCTION 3–0 C[3:0] 0000 Byte count: 0000b ³ Count = 0 L 0111b ³ Count = 7 1000b ³ Count = 8 1001b to 1111b are reserved. (If used, defaults to 8) 6–4 RSV 0 Reserved = 0 7 NAK 1 NAK= 0 No valid data in buffer. Ready for host out NAK= 1 Buffer contains a valid packet from the host (NAK the host). 2.6 USB Registers 2.6.1 FUNADR: Function Address Register This register contains the device function address. 7 6 5 4 3 210 RSV FA6 FA5 FA4 FA3 FA2 FA1 FA0 R/O R/W R/W R/W R/W R/W R/W R/W BIT NAME RESET FUNCTION 6–0 FA[6:0] 0000000 These bits define the current device address assigned to the function. The MCU writes a value to this register as a result of the SET-ADDRESS host command. 7 RSV 0 Reserved = 0 |
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