NSK70721PE.C2 S E001 Intel, NSK70721PE.C2 S E001 Datasheet - Page 28
NSK70721PE.C2 S E001
Manufacturer Part Number
NSK70721PE.C2 S E001
Description
Manufacturer
Intel
Datasheet
1.NSK70721PE.C2_S_E001.pdf
(82 pages)
Specifications of NSK70721PE.C2 S E001
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.75V
Operating Supply Voltage (max)
5.25V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
28
Lead Free Status / RoHS Status
Not Compliant
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SK70725/SK70721 — Enhanced Multi-Rate DSL Data Pump Chip Set
3.1.6.3
28
Table 9.
Table 10. Master Activation Timer Constant (MATC) (WR3)
Table 11. Coefficient Select Functions of Register (WR3)
Interrupt Mask and Line Reversal Control Register (WR2)
WR3—Coefficient Select and Master Activation Timer Register
This register serves two unrelated functions. Bits 5 and 6 are used to program the Master
Activation Timer Constant (MATC) and bits 0-4 are used to select the internal coefficient register.
Table 10
B4:B0 in
B6:B5
08-0F
Bit
00-07
10-15
B7
B6
B5
B4
B3
B2
B1
B0
Bit
B7
hex
Address: A<3:0> = 0011
Default 00h
Attributes: Write Only.
and
TRREV. TIP/RING reversal control. Set to 1 to invert
the polarity of the received signal.
Reserved. Must be set to 0.
LOSMSK. Interrupt mask for the LOS condition.
1=Masked (Interrupt Disabled).
DEACTMSK. Interrupt mask for the DEACTVTD
condition 1=Masked (Interrupt Disabled).
ACTBMSK. Interrupt mask for the ACTIVE condition.
1=Masked (Interrupt Disabled).
ACTMSK. Interrupt mask for the TMR_EXP condition
and the ACTIVE condition. 1=Masked (Interrupt
Disabled).
Reserved. Must be set to 0.
Enable coefficient read register (CRD1). 1=Enable.
0=Disable. Used in conjunction with WR3, RD3, and
RD4 for reading coefficient values.
reserved
00=5000
01=2500
10=1667
11= 833
MATC
DFE1-DFE8
FFE1-FFE6
Table 11
EC1-EC8
Selected
Register
Must be set to 0
MATC Value
describe both of these functions.
DFE coefficients 1-8
Echo Canceller coefficients 1-8
FFE coefficients 1-6
Description
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