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UM0434 Datasheet(PDF) 285 Page - STMicroelectronics |
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UM0434 Datasheet(HTML) 285 Page - STMicroelectronics |
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285 / 390 page  External core complex interfaces UM0434 286/391 Figure 55 shows another example of error termination, this time on the initial portion of a misaligned write. Figure 55. Misaligned write with error, data write retracted, burst read substituted, full pipelining The first portion of the misaligned write request is terminated with error. The second portion is aborted by the CPU during the second cycle of the two cycle error response, and a subsequent burst read access to addrw becomes pending instead. nonseq nonseq idle nonseq seq seq seq idle addr x addr x+ addr w addr w+8 addr w+16 addr w+24 single single wrap 4 ** data w w+8 w+16 w +24 data x okay error error okay okay okay okay okay 123 45 67 8 m_clk p_htrans p_ addr,p_hprot p_hsize, p_hbstrb, etc p_hburst p_hunalign p_hwrite p_hrdata p_hwdata p_hready p_hresp |
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