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公开(公告)号：US4975916A
公开(公告)日：1990-12-04
申请号：US225106
申请日：1988-07-26
CPC分类号： H04L25/4908
摘要： A system for bit character synchronization of an 8/10 bit code being deserialized is provided by a deserializer with a skip bit function input used to move a character boundary one bit at a time, and 8/10 code error detector, a zero disparity character detector and skip pulse generator. After character sychronism is lost, the skip pulse generator is permitted to generate a skip pulse if the following sequence occurs: all bits of the old character boundary have been flushed through the logic circuits, at least one non-zero disparity character has been detected, and an 8/10 code error is detected. After character synchronism is re-acquired, then the skip pulse generator is no longer permitted to generate a skip pulse.
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2.发明授权Serial frame processing system in which validation and transfer of a frame's data from input buffer to output buffer proceed concurrently 失效串行帧处理系统，其中从输入缓冲区到输出缓冲区的帧数据的验证和传输一致地进行
公开(公告)号：US5133078A
公开(公告)日：1992-07-21
申请号：US392867
申请日：1989-08-11
CPC分类号： G06F5/16
摘要： An asynchronous high-speed data interface for coupling a serial channel to a parallel control unit. A first state machine, running synchronously with the channel transmitter clock, controls the filling of a pair of dual-port input buffers in alternating fashion with frame contents bytes from incoming serial frames that have been deserialized and decoded. A second state machine, running synchronously with a second clock that is asynchronous with the channel transmitter clock, controls the transfer of the frame contents bytes from the selected input buffer to one of a pair of output buffers en route to the control unit. Upon detecting the receipt of the third incoming frame contents byte, the first state machine sets a start latch, causing the second state machine to begin transferring data from the selected input buffer to the selected output buffer while the input buffer is still being filled. Means are provided for disregarding the frame contents bytes that have been transferred to the selected output buffer if the frame is ultimately aborted.
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3.发明授权Method and apparatus for supporting byte-mode devices and non-byte-mode devices on a bus 失效在总线上支持字节模式器件和非字节模式器件的方法和装置
公开(公告)号：US5559972A
公开(公告)日：1996-09-24
申请号：US981930
申请日：1992-11-24
CPC分类号： G06F13/122
摘要： In a data processing system in which an extender unit interconnects the parallel bus of a control unit and a serial link of an extender channel, the channel and the extender unit send and receive serial frames that permit the extender unit to operate under the protocol of the parallel bus with either byte mode devices or non-byte mode devices. The control unit can be modified to operate with a byte mode device in data streaming, a high speed data transfer mode.
摘要翻译： 在其中扩展器单元将控制单元的并行总线和扩展器信道的串行链路互连的数据处理系统中，信道和扩展器单元发送和接收允许扩展器单元在协议的协议下操作的串行帧 并行总线与任一字节模式器件或非字节模式器件。 在数据流，高速数据传输模式中，可以修改控制单元以使用字节模式设备进行操作。
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4.发明授权Apparatus for communication between a device control unit having a parallel bus and a serial channel having a serial link 失效具有并行总线的设备控制单元和具有串行链路的串行通道之间的通信的设备
公开(公告)号：US5434980A
公开(公告)日：1995-07-18
申请号：US996370
申请日：1992-12-23
CPC分类号： G06F13/122
摘要： A device control unit operating under the protocol of a parallel bus is connected by a serial link to a channel that is primarily adapted to operate under a different protocol with device control units connected by a serial link. An extender unit interconnects the parallel bus and the serial link and performs the specific operations of the parallel bus protocol. The channel and the extender unit send serial frames on the link for data transfer and associated operations. These frames are constructed according to a protocol that provides an intermediate step in translating between the protocol of the serial control units and the protocol of the parallel control units. The channel is operable in either mode (by microcode) and the new protocol permits the serial channel mode to be independent of the protocol of the parallel control unit and it permits the two modes to be closely similar in many features. New operations using the protocol reduce the delays that would otherwise be required in the communications between the channel and the extender unit. The serial link can be made longer when the delays are reduced.
摘要翻译： 在并行总线的协议下工作的设备控制单元通过串行链路连接到主要适于在具有通过串行链路连接的设备控制单元的不同协议下操作的信道。 扩展单元将并行总线和串行链路互连，并执行并行总线协议的特定操作。 通道和扩展器单元在链路上发送串行帧以进行数据传输和相关操作。 这些帧是根据提供在串行控制单元的协议和并行控制单元的协议之间转换的中间步骤的协议构成的。 信道可以在任一模式（通过微代码）操作，并且新协议允许串行信道模式独立于并行控制单元的协议，并且允许两种模式在许多特征中是紧密相似的。 使用该协议的新操作减少了在通道和扩展器单元之间的通信中否则将需要的延迟。 当延迟减少时，可以使串行链路更长。
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5.发明授权Serial channel interface with method and apparatus for handling data streaming and data interlocked modes of data transfer 失效串行通道接口，用于处理数据流和数据互锁数据传输模式的方法和装置
公开(公告)号：US4712176A
公开(公告)日：1987-12-08
申请号：US700355
申请日：1985-02-11
CPC分类号： G06F13/4226 , G06F13/122 , G06F13/28
摘要： Data is transferred between a channel and a control unit in interlocked mode or in data streaming mode over a conventional parallel bus and a serial link that permits the control unit and the channel to be located farther apart than the length of the parallel bus. The serial link carries frames for the rise of the data transfer tags but not their fall, and these tags on the parallel bus are dropped by two circuits that connect the serial link to the parallel bus. In data streaming mode, one data transfer tag is dropped when the next data transfer tag is received on the serial link. The circuit at the control unit end of the serial link detects a pause in the tags to begin an operation to drop the last data transfer tags and both circuits respond to other conditions to drop the last data transfer tags according to the protocol of the parallel bus.
摘要翻译： 数据通过常规并行总线和串行链路以联锁模式或数据流模式在通道和控制单元之间传输，允许控制单元和通道位于比并行总线长度更远的位置。 串行链路携带用于数据传输标签上升而不是下降的帧，并且并行总线上的这些标签由将串行链路连接到并行总线的两个电路丢弃。 在数据流传输模式下，当串行链路上接收到下一个数据传输标签时，丢弃一个数据传输标签。 串行链路控制单元末端的电路检测到标签中的暂停，开始删除最后一个数据传输标签的操作，两个电路响应其他条件，根据并行总线的协议丢弃最后的数据传输标签 。
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公开(公告)号：US5504611A
公开(公告)日：1996-04-02
申请号：US376508
申请日：1995-01-23
CPC分类号： H04B10/079 , H04B10/0797
摘要： A computer system employs a repeater unit which repowers a serial channel link. The repeater unit also monitors and records non-idle usage and errors for both directions of the repeated serial link. Non-idle usage of the serial link is recorded as a number of seconds that non-idle traffic flowed in the link over a given period of time. Link serial code violations and loss-of-light transitions are also counted. Link code violations are counted with an accuracy that permits targeted serial link bit-error rates, of no more than one bit error in approximately two months, to be accurately verified for the first time in a normal customer environment. The repeater unit permits an attached monitoring computer to read and reset all its usage and error counters as often as required by the customer, and without losing any counts of any counted event. The attached monitoring computer can also instruct the repeater unit to send certain diagnostic patterns or no-light and/or perform a remote wrap function to assist with link problem determinations.
摘要翻译： 计算机系统采用中继器单元，其对串行信道链路进行解码。 中继器单元还监视和记录重复串行链路的两个方向的非空闲使用和错误。 串行链路的非空闲使用被记录为非空闲业务在给定时间段内流过链路的秒数。 链接序列号违规和光损失转移也被计算在内。 链接代码违规被计入准确性，允许在正常客户环境中首次准确地验证大约两个月内不超过一个位错误的目标串行链路误码率。 中继器单元允许连接的监视计算机按照客户要求经常读取和重置所有使用和错误计数器，并且不会丢失任何计数事件的计数。 连接的监视计算机还可以指示中继器单元发送某些诊断模式或不发光和/或执行远程包装功能以辅助链路问题确定。
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公开(公告)号：US5572352A
公开(公告)日：1996-11-05
申请号：US376269
申请日：1995-01-23
CPC分类号： H04B10/079 , H04B10/0797
摘要： A computer system employs a repeater unit which repowers a serial channel link. The repeater unit also monitors and records non-idle usage and errors for both directions of the repeated serial link. Non-idle usage of the serial link is recorded as a number of seconds that non-idle traffic flowed in the link over a given period of time. Link serial code violations and loss-of-light transitions are also counted. Link code violations are counted with an accuracy that permits targeted serial link bit-error rates, of no more than one bit error in approximately two months, to be accurately verified for the first time in a normal customer environment. The repeater unit permits an attached monitoring computer to read and reset all its usage and error counters as often as required by the customer, and without losing any counts of any counted event. The attached monitoring computer can also instruct the repeater unit to send certain diagnostic patterns or no-light and/or perform a remote wrap function to assist with link problem determinations.
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公开(公告)号：US5517519A
公开(公告)日：1996-05-14
申请号：US76027
申请日：1993-06-14
CPC分类号： H04B10/079 , H04B10/0797
摘要： A computer system employs a repeater unit which repowers a serial channel link. The repeater unit also monitors and records non-idle usage and errors for both directions of the repeated serial link. Non-idle usage of the serial link is recorded as a number of seconds that non-idle traffic flowed in the link over a given period of time. Link serial code violations and loss-of-light transitions are also counted. Link code violations are counted with an accuracy that permits targeted serial link bit-error rates, of no more than one bit error in approximately two months, to be accurately verified for the first time in a normal customer environment. The repeater unit permits an attached monitoring computer to read and reset all its usage and error counters as often as required by the customer, and without losing any counts of any counted event. The attached monitoring computer can also instruct the repeater unit to send certain diagnostic patterns or no-light and/or perform a remote wrap function to assist with link problem determinations.
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