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TP3420AV Datasheet(PDF) 10 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # TP3420AV
Description  ISDN S/T Interface Device
PDF  32 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

TP3420AV Datasheet(HTML) 10 Page - National Semiconductor (TI)

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Functional Description (Continued)
TABLE 4. Control Register Functions
Function
Mnemonic
Bit Number
76543210
Activation/Deactivation
No Operation
NOP
11111111
Power-Down (Note 6)
PDN
00000000
Power-Up
PUP
00100000
Deactivation Request
DR
00000001
Force INFO2 (NT only)
FI2
00000010
Monitor Mode Activation
MMA
00011111
Activation Request
AR
00000011
Device Modes
NT Mode, Adaptive Sampling (Note 6)
NTA
00000100
NT Mode, Fixed Sampling
NTF
00000101
TE Mode, Digital System Interface Slave (Note 7)
TES
00000110
TE Mode, Digital System Interface Master
TEM
00000111
Digital Interface Formats
Digital System Interface Format 1 (Note 6)
DIF1
00001000
Digital System Interface Format 2
DIF2
00001001
Digital System Interface Format 3
DIF3
00001010
Digital System Interface Format 4
DIF4
00001011
BCLK Frequency Settings
Set BCLK to 2.048 MHz
BCLK1
10011000
Set BCLK to 256 kHz
BCLK2
10011001
Set BCLK to 512 kHz
BCLK3
10011010
Set BCLK to 2.56 MHz
BCLK4
10011011
B Channel Exchange
B Channels Mapped Direct, B1 to B1, B2 to B2 (Note 6)
BDIR
00001100
B Channels Exchanged, B1 to B2, B2 to B1
BEX
00001101
DS009143-21
FIGURE 5. TP3240A Enhanced MICROWIRE Control Interface Timing
www.national.com
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