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HC705JB2GRS/H 数据表(PDF) 99 Page - NXP Semiconductors |
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HC705JB2GRS/H 数据表(HTML) 99 Page - NXP Semiconductors |
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99 / 128 page ![]() August 28, 1998 GENERAL RELEASE SPECIFICATION UNIVERSAL SERIAL BUS MODULE REV 1.1 10-31 Figure 10-31. IN Token Data Flow for Transmit Endpoint 0 Transmit Endpoint Enabled? (USBEN = 1) Transmit Endpoint ready to Transfer? (TX0E = 1) && (TXD0F = 0) No Response from USB function Send NAK Handshake ACK received and no Set TXD0F to 1 Transmit Endpoint Interrupt Enabled? (TXD0IE = 1) No Interrupt Valid transaction Interrupt generated Transmit Endpoint not Stalled by firmware? (STALL0 = 0) Send STALL Handshake Send DATA Data PID set by T0SEQ Valid IN token received for Endpoint 0 N Y N N Y Y Y No Response from USB function N Y Time-out condition occur? N Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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