參數(shù)資料
型號(hào): HSP43220JC-33Z
廠商: Intersil
文件頁(yè)數(shù): 18/21頁(yè)
文件大?。?/td> 0K
描述: IC DECIMATING DGTL FILTER 84PLCC
標(biāo)準(zhǔn)包裝: 15
濾波器類型: 數(shù)字
濾波器數(shù): 4
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 84-LCC(J 形引線)
供應(yīng)商設(shè)備封裝: 84-PLCC(29.21x29.21)
包裝: 管件
6
FN2486.10
October 10, 2008
DDF Control Registers
F_Register (A1 = 0, A0 = 0)
FIGURE 4.
F_OAD
F_BYP
F_ESYM
F_DRATE
F_TAPS
FA0
FB0
ES0
D3
D2
D1
D0
T8T7
T6
T5
T4
T3T2T1T0
F_TAPS
Bits T0-T8 are used to specify the number of FIR filter taps. The number
entered is one less than the number of taps required. For example, to
specify a 511 tap filter F_TAPS would be programmed to 510. The
minimum number of FIR taps = 3 (F_TAPS = 2).
F_DRATE
Bits D0-D3 are used to specify the amount of FIR decimation. The
number entered is one less than the decimation required. For example,
to specify decimation of 16, F_DRATE would be programmed to 15. For
no FIR decimation, F_DRATE would be set equal to 0. FDRATE +1 is
defined as FDEC.
F_ESYM
Bit ES0 is used to select the FIR symmetry. F_ESYM is set equal to one
to select even symmetry and set equal to zero to select odd symmetry.
When F_ESYM is one, data is added in the pre-adder; when it is zero,
data is subtracted. Normally set to one.
F_BYP
FB0 is used to select FIR bypass mode. FIR bypass mode is selected by
setting F_BYP = 1. When FIR bypass mode is selected, the FIR is
internally set up for a 3 tap even symmetric filter, no decimation
(F_DRATE = 0) and F_OAD is set equal to one to zero one side of the
preadder. In FIR bypass mode all FIR filter parameters, except F_CLA,
are ignored, including the contents of the FIR coefficient RAM. In FIR
bypass mode the output data is brought output on the lower 16 bits of the
output bus DATA_OUT 0-15. To disable FIR bypass mode, F_BYP is set
equal to zero. When F_BYP is returned to zero, the coefficients must be
reloaded.
F_OAD
Bit FA0 is used to select the zero the preadder mode. This mode zeros
one of the inputs to the pre-adder. Zero preadder mode is selected by
setting F_OAD equal to one. This feature is useful when implementing
arbitrary phase filters or can be used to verify the filter coefficients. To
disable the Zero Preadder mode F_OAD is set equal to zero.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
HSP43220
相關(guān)PDF資料
PDF描述
IA188EM-PTQ100I-R-03 IC MCU 8/16BIT 40MHZ 100TQFP
IA188ES-PTQ100I-R-03 IC MCU 8/16BIT 40MHZ 100TQFP
IA6805E2PLC44IR0 IC MCU 8BIT 5MHZ 44PLCC
IA82050-PDW28I-R-01 IC ASYNCHRONOUS SERIAL CTRL
IA82510-PDW28I-R-01 IC ASYNCHRONOUS SERIAL CTRL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HSP43220TM-15 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital Filter
HSP43220TM-25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital Filter
HSP43220VC-25 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述:
HSP43220VC-33 制造商:Rochester Electronics LLC 功能描述:- Bulk
HSP43481 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Digital Filter