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UNI/O bus example: single master and four slaves Example UNI/O devices in SOT-23 and wafer level chip scale packages sitting on the face of a U.S. penny. The UNI/O bus / ˌ juː n i ˈ oʊ / is an asynchronous serial bus created by Microchip Technology for low speed communication in embedded systems. [1]
MII has two signal interfaces: A Data interface to the Ethernet MAC, for sending and receiving Ethernet frame data. A PHY management interface, MDIO, used to read and write the control and status registers of the PHY in order to configure each PHY before operation, and to monitor link status during operation.
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Stop (logic high (1)): the next one or two bits are always in the mark (logic high, i.e., 1) condition and called the stop bit(s). They signal to the receiver that the character is complete. Since the start bit is logic low (0) and the stop bit is logic high (1) there are always at least two guaranteed signal changes between characters.
Low-density parity-check (LDPC) codes are a class of highly efficient linear block codes made from many single parity check (SPC) codes. They can provide performance very close to the channel capacity (the theoretical maximum) using an iterated soft-decision decoding approach, at linear time complexity in terms of their block length.
[9]: 47–49 The least significant bit indicates that the diagnostic mode should start (1) or stop (0). A payload byte of 0 stops all diagnostic modes. The secondary echoes the byte in its response. 0: Stop all diagnostic modes. 2 (off)/3 (on): Beacon test. Disable all output, causing the next recipient to lose carrier (and begin beaconing).
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Sending data from sub to main may use the opposite clock edge as main to sub. Devices often require extra clock idle time before the first clock or after the last one, or between a command and its response. Some devices have two clocks, one to read data, and another to transmit it into the device. Many of the read clocks run from the chip ...