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TP3420AV 数据表(PDF) 11 Page - National Semiconductor (TI) |
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TP3420AV 数据表(HTML) 11 Page - National Semiconductor (TI) |
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11 / 32 page  Functional Description (Continued) TABLE 4. Control Register Functions (Continued) Function Mnemonic Bit Number 76543210 D Channel Access D Channel Request, Class 1 Message DREQ1 00001110 D Channel Request, Class 2 Message DREQ2 00001111 D Channel Access Control Enable D-Channel Access Mechanism, TE Mode (Note 8) DACCE 10010000 Disable D-Channel Access Mechanism, TE Mode (Note 8) DACCD 10010001 Force Echo Bit to 0 EBIT0 10010110 Force Echo Bit to Inverted Received D Bit EBITI 10010111 Reset EBITI and EBIT0 to Normal Condition (Note 6) EBITNRM 10011100 D Channel Clock Enable DCKE 11110001 End of Message Interrupt EOM Interrupt Enabled (Note 6) EIE 00010000 EOM Interrupt Disabled EID 00010001 Multiframe Circuit and Interrupt Enable SC1/Q Messaging and MFR1 Interrupt MIE1 00010010 Disable SC1/Q Message and Interrupt (Note 6) MID1 00010011 Enable 5 ms Interrupt (Every Multiframe) MFC1E 00100010 Disable 5 ms Interrupt (Note 6) MFC1D 00100011 Enable 30 ms Interrupt (6 Multiframes) MFC6E 00100100 Disable 30 ms Interrupt (Note 6) MFC6D 00100101 Enable SC2 Messaging and MFR2 Interrupt MIE2 00100110 Disable SC2 Messaging and Interrupt (Note 6) MID2 00100111 Multiframe Receive Message Validation Enable 3x and 1x Validation of Received Data ENV 00101000 Disable 3x and 1x Validation of Received Data (Note 6) DISV 00101001 Multiframe Transmit Registers Write to Multiframe Transmit Register MFT1L 0011 M1 M2 M3 M4 (SC1/Q Low Priority Messages) Write to Multiframe Transmit Register MFT1H 0100 M1 M2 M3 M4 (SC1/Q High Priority Messages) Write to Multiframe Transmit Register MFT2 0101 M1 M2 M3 M4 (SC2 Messages) B1 Channel Enable/Disable B1 Channel Enabled B1E 00010100 B1 Channel Disabled (Note 6) B1D 00010101 B2 Channel Enable/Disable B2 Channel Enabled B2E 00010110 B2 Channel Disabled (Note 6) B2D 00010111 Loopback Test Modes Loopback B1 Towards Line Interface LBL1 00011000 Loopback B2 Towards Line Interface LBL2 00011001 Loopback 2B+D Towards Digital Interface LBS 00011010 Loopback B1 Towards Digital Interface LBB1 00011100 Loopback B2 Towards Digital Interface LBB2 00011101 Clear All Loopbacks (Note 6) CAL 00011011 Control Device State Reading Enable the Device State Output on the NOCST ENST 10010010 www.national.com 11 |
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