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| [2013-11-29] |
Protocol Analyzer Serial Wire Debug(SWD)_V1.01.01 Publish |
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Modify Items: 1. SWD decoding has problems. Before modified: Read/Write data would be decoded wrongly. After modified: SWD could decode Read/Write of particular signal correctly. 2. Sometimes Trn would be decoded wrongly. Before modified: Sometimes Trn would be decoded wrongly. After modified: Fix the Trn value to 1 and decode Trn by dividing it into 0.5 clock and 1.5 clock. 3. Support decoding of JTAG-to-SWD, SWD-to-JTAG and IDLE. Before modified: Don't support decoding of JTAG-to-SWD, SWD-to-JTAG and IDLE. After modified: Support decoding of JTAG-to-SWD, SWD-to-JTAG and IDLE. 【DOWNLOAD】
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SWD, a kind of serial signal, has two signal lines: SWCLK and SWDIO. Its input/output is determined by the data of both parties involving data exchanging, which is Host and Target. It has the same JTAG Protocol of JTAG Bus and is upward compatible. Its data transmission speed can be up to 4Mbps under 50MHz since it takes the CPU Standard Bidirectional Line Protocol of ARM. Besides it also has internal debugger; the TMS and TCK line of JTAG interface will act as SWDIO and SWCLK signal line so as to provide dual-mode program. more ~ |
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