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数据搜索系统，热门电子元器件搜索 |
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ST75C540 数据表(PDF) 32 Page - STMicroelectronics |
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ST75C540 数据表(HTML) 32 Page - STMicroelectronics |
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32 / 84 page  CR Complex Read CR Opcode: 11 000 10001 Synopsis CR allows thereading of a complex parameter.The parameterspecifiestheparameter address(for the real part : the imaginary part is next location). CR returns the high byte value of both real and imaginary part of the addressedcomplex parameter(see ChapterVIII “STATUS DESCRIPTION”). Parameters Field Byte Pos. Value Definition CR_ADDR_L 1 7..0 Low byte of the 16-bit address CR_ADDR_H 2 7..0 High byte of the 16-bit address CSE Clear Error Status CSE Opcode: 08 000 01000 Synopsis CSE is used to clear the ST75C530/540 error status SYSERR byte. It is also used as an acknowledge to the error condition handler. Parameters Field Byte Pos. Value Definition ERR_MASK 1 7..0 Error mask. See report appendix for detailed meaning DEFT Define Arbitrary Tone DEFT Opcode: 0E 000 01110 Synopsis DEFT programs one of the four tone generator for arbitrary tone generation.The parameter is the frequency of the generated tone expressed in Hertz between 0 and 3600Hz. Parameters Field Byte Pos. Value Definition TONE_GEN_SL 1 1..0 Index of the tone generator (3..0) TONE_FREQ_L 2 7..0 Low byte of the frequency TONE_FREQ_H 3 7..0 High byte of the frequency (internally masked with 0F) TONE_SCALE 4 7..0 Amplitude scaling factor (high byte) 3F gives the nominal amplitude DOSR Define Optional Status Report DOSR Opcode: 0A 000 01010 Synopsis DOSR specifies the address of the RAM variables to be monitored in the 4 locations STAOPT[0..3] of the dual port RAM. It also specifies the assignment within the 4 locations. Parameters Field Byte Pos. Value Definition STA_OPT_ASS 1 1..0 0..3 Index of the STAOPT destination STA_OPT_ADL 2 7..0 Low byte of source address STA_OPT_ADH 3 3..0 High byte of source address STA_OPT_HL 3 7 0 1 Select low byte of source Select high byte of source VII - COMMAND SET DESCRIPTION (continued) ST75C530 - ST75C540 32/84 |
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