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LRIS2K 数据表(PDF) 70 Page - STMicroelectronics |
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LRIS2K 数据表(HTML) 70 Page - STMicroelectronics |
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70 / 102 page  Lock DSFID LRIS2K 70/102 33 Lock DSFID On receiving the Lock DSFID request, the LRIS2K locks the DSFID value permanently. The Option_flag is supported. During the write cycle tW, there should be no modulation (neither 100% nor 10%). Otherwise, the LRIS2K may not lock correctly the DSFID value in memory. The tW time is equal to t1nom + 18 × 302 µs. Request parameter: ● UID (optional) Response parameter: ● No parameter. Response parameter: ● Error code as Error_flag is set: – 11h: block is locked – 14h: block not locked Table 56. Lock DSFID request format Request SOF Request_ flags Lock DSFID UID CRC16 Request EOF 8 bits 2Ah 64 bits 16 bits Table 57. Lock DSFID response format when Error_flag is NOT set Response SOF Response_flags CRC16 Response EOF 8 bits 16 bits Table 58. Lock DSFID response format when Error_flag is set Response SOF Response_flags Error code CRC16 Response EOF 8 bits 8 bits 16 bits Figure 50. Lock DSFID frame exchange between VCD and LRIS2K VCD SOF Lock DSFID request EOF LRIS2K <-t1-> SOF Lock DSFID response EOF Lock sequence when error LRIS2K <------------ tW ------------><- t1 -> SOF Lock DSFID response EOF |
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