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TP3420A датащи(PDF) 11 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали TP3420A
подробное описание детали  ISDN S/T Interface Device
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

TP3420A датащи(HTML) 11 Page - National Semiconductor (TI)

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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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