摘要:
There is disclosed a method and apparatus for recovering data from a received signal, the received signal including a first signal comprising data bits and a second signal having transitions at data bit boundaries of the first signal where there is an absence of transitions, the method comprising: receiving the first signal; receiving the second signal; sampling the first signal to detect an edge transition of the first signal; sampling the second signal to detect an edge transition of the second signal; wherein on an active edge of either said first or said signal, the current value of the first signal is recovered as a received data bit.
摘要:
A communications system includes tow high speed communication links formed by pairs of transformers at either end thereof. A phantom circuit formed by the pairs of transformers is used to distribute power to devices connected to the high speed links. In transmission part of a communication system, data is transmitted under the control of a continuously variable frequency clock. The transmission is on parallel data-strobe links, and the receive includes circuitry to identify on which parallel the data signal is preset. A method and circuitry is provided for transmitting and receiving dc balanced data strobe signals.
摘要:
A communication. system includes two high speed communication links formed by pairs of transformers at either end thereof. A phantom circuit formed by the pairs of transformers is used to distribute power to devices connected to the high speed links. In transmission part of a communications system, data is transmitted under the control of a continuously variable frequency clock. Transmission is on parallel data-strobe links, and the receive includes circuitry to identify on which parallel the data signal is preset. A method and circuitry is provided for transmitting and receiving dc balanced data strobe signals.
摘要:
An encoding scheme relies on a d.c. balanced code wherein each message to be transmitted is sent as a plurality of symbols, each symbol having six bits, three ones and three zeros. Out of the twenty combinations of balanced six-bit codes, two codes are reserved to operate as control tokens, being 010101 and 01010. Because of the particular format of the symbols, control tokens can be easily detected. Furthermore, they can be combined in longer bit sequences for use as initialisation and disconnect sequences.
摘要:
A coding scheme for transmitting messages particularly between computers is described. Messages are transmitted in packets which include at least a data portion and a terminator. Out of a predetermined set of symbols, sixteen data symbols and at least one control symbol is selected. The terminator token is generated to constitute the symbol and a six-bit symbol representing checking bits.
摘要:
A semiconductor device comprising at least one semiconductor chip, the or each semiconductor chip having a plurality of chip bonding pads, a package which encloses the at least one semiconductor chip, a first level interconnect comprising a printed circuit which overlies the at least one semiconductor chip in the package and extends externally of the package to provide a plurality of outer leads, and a second level interconnect comprising means for electrically connecting the chip bonding pads to selected contacts on the printed circuit, which contacts overlie the at least one semiconductor chip. The invention also relates to a method of manufacturing such a semiconductor device and to a method of assembling a semiconductor assembly.
摘要:
A coding method for a sequence of elements that can be equal to at least two distinct values, the elements forming at least one input symbol. The coding method comprises a stretching step of stretching at least one of the input symbols, to form a stretched symbol, such that the stretched symbol does not have any successive transitions. The coding method further comprises a cancelling step of canceling the disparity of the stretched symbol to form a coded symbol, such that the coded symbol comprises approximately the same number of elements of each value.
摘要:
A communication system includes two high speed communication links formed by pairs of transformers at either end thereof. A phantom circuit formed by the pairs of transformers is used to distribute power to devices connected to the high speed links. In transmission part of a communications system, data is transmitted under the control of a continuously variable frequency clock. Transmission is on parallel data-strobe links, and the receive includes circuitry to identify on which parallel the data signal is preset. A method and circuitry is provided for transmitting and receiving dc balanced data strobe signals.
摘要:
There is disclosed a method and apparatus for recovering data from a received signal, the received signal including a first signal comprising data bits and a second signal having transitions at data bit boundaries of the first signal where there is an absence of transitions, the method comprising: receiving the first signal; receiving the second signal; sampling the first signal to detect an edge transition of the first signal; sampling the second signal to detect an edge transition of the second signal; wherein on an active edge of either said first or said signal, the current value of the first signal is recovered as a received data bit.
摘要:
There is disclosed a method and apparatus for recovering data from a received signal, the received signal including a first signal comprising data bits and a second signal having transitions at data bit boundaries of the first signal where there is an absence of transitions, the method comprising: receiving the first signal; receiving the second signal; sampling the first signal to detect an edge transition of the first signal; sampling the second signal to detect an edge transition of the second signal; wherein on an active edge of either said first or said signal, the current value of the first signal is recovered as a received data bit.