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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST75C520PQFP датащи(PDF) 21 Page - STMicroelectronics |
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ST75C520PQFP датащи(HTML) 21 Page - STMicroelectronics |
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21 / 45 page  DSIT Define Status Interrupt DSIT Opcode: 13 00010011 Synopsis DSIT specifies the bit mask used with the STATUS[0] and STATUS[1] byte to generate an interrupt IT4 to controller. Each time a bit change happens in the status words, assuming the corresponding bit mask will be set, an interrupt will be generated. Parameters Field Byte Pos. Value Definition STA_IT_MSK0 1 7..0 Status[0] bit mask pattern STA_IT_MSK1 2 7..0 Status[1] bit mask pattern Notes : The default IT Status is 0x3F for STATUS[0] and 0xFF for STATUS[1]. FORM Select Transmission Format FORM Opcode: 09 00001001 Synopsis FORM defines the type of transmission used. This format is valid only in the parallel data mode. The default format, unless specified, is synchronous. Parameters Field Byte Pos. Value Definition X_SYNC 1 1..0 00* 01 10 11 Synchronous format Transmit continous ”1” (1) HDLC framing Transmit continous ”0” (1) Notes : 1. This format is only valid for the transmiter. HSHK Handshake HSHK Opcode: 04 00000100 Synopsis HSHK is used to command the ST75C520 to begin the transmit handshake sequence processing. The progress of the handshake is reported to the control processor. Parameter Non parametric command. IDT Identify IDT Opcode: 14 00010100 Synopsis IDT Return the ST75C520 Hardware and Software release number. See paragraph VII.1.4. Parameter Non parametric command. INIT Initialization INIT Opcode: 06 00000110 Synopsis INIT forces the ST75C520 to reset all parameters to their default conditions and restart operations. Parameter Non parametric command. Notes : This command makes a software reset of the ST75C520 and so cannot have the regular handshake protocol. It does not increment the COMACK, neither generate an Interrupt. ST75C520 21/45 |
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