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DP83256 Datasheet(PDF) 38 Page - Texas Instruments |
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DP83256 Datasheet(HTML) 38 Page - Texas Instruments |
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38 / 146 page  50 Registers The PLAYERa device can be initialized configured and monitored using 64 8-bit registers These registers are accessible through the Control Bus Interface The following tables summarize each register’s attributes Note RESERVED Registers may be read at any time although the values read are not specified The results of RESERVED Register writes are not specified and may have adverse implications The user should not write to RESERVED Register locations TABLE 5-1 Register Summary Register Address Register Symbol Register Name Access Rules Read Write 00h MR Mode Register Always Always 01h CR Configuration Register Always Conditional 02h ICR Interrupt Condition Register Always Conditional 03h ICMR Interrupt Condition Mask Register Always Always 04h CTSR Current Transmit State Register Always Conditional 05h IJTR Injection Threshold Register Always Always 06h ISRA Injection Symbol Register A Always Always 07h ISRB Injection Symbol Register B Always Always 08h CRSR Current Receive State Register Always Write Reject 09h RCRA Receive Condition Register A Always Conditional 0Ah RCRB Receive Condition Register B Always Conditional 0Bh RCMRA Receive Condition Mask Register A Always Always 0Ch RCMRB Receive Condition Mask Register B Always Always 0Dh NTR Noise Threshold Register Always Always 0Eh NPTR Noise Prescale Threshold Register Always Always 0Fh CNCR Current Noise Count Register Always Write Reject 10h CNPCR Current Noise Prescale Count Register Always Write Reject 11h STR State Threshold Register Always Always 12h SPTR State Prescale Threshold Register Always Always 13h CSCR Current State Count Register Always Write Reject 14h CSPCR Current State Prescale Count Register Always Write Reject 15h LETR Link Error Threshold Register Always Always 16h CLECR Current Link Error Count Register Always Write Reject 17h UDR User Definable Register Always Always 18h IDR Device ID Register Always Write Reject 19h CIJCR Current Injection Count Register Always Write Reject 1Ah ICCR Interrupt Condition Comparison Register Always Always 1Bh CTSCR Current Transmit State Comparison Register Always Always 1Ch RCCRA Receive Condition Comparison Register A Always Always 37 |
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