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ST92163 датащи(PDF) 147 Page - STMicroelectronics |
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ST92163 датащи(HTML) 147 Page - STMicroelectronics |
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147 / 224 page ![]() 147/224 ST92163 - USB PERIPHERAL (USB) USB INTERFACE (Cont’d) Bit 0 = SOFP_ENABLE: Start-Of-Frame Pulse Enable. Set by software to enable the use of the USBSOF alternate output function. 1: USBSOF alternate function enabled 0: USBSOF output disabled USBSOF outputs a 333.33 ns long pulse at each frame start (actually 10 bits before the SOF packet expected start). This pulse is not generated until two SOF packets are received after any USB reset or USB resume (frame timer locking) and they stop as soon as the suspend condition is entered (TIM_SUSP bit in USBCTLR register). MIRROR REGISTER A (MIRRA) R246 - Read/Write Register page: 60 Reset value: xxxx xxxx (xxh) Bit 7:0 = MIRA[7:0] Mirror register A, bits 7-0. This register acts as a bit mirroring location where software can write a byte and read it back with the LSB and MSB position swapped. MIRROR REGISTER B (MIRRB) R247 - Read/Write Register page: 60 Reset value: xxxx xxxx (xxh) Bit 7:0 = MIRB[7:0] Mirror register B, bits 7-0. This register acts as a bit mirroring location where software can write a byte and read it back with the LSB and MSB position swapped. 70 MIRA7 MIRA6 MIRA5 MIRA4 MIRA3 MIRA2 MIRA1 MIRA0 70 MIRB7 MIRB6 MIRB5 MIRB4 MIRB3 MIRB2 MIRB1 MIRB0 |
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