HSP43220JC-25Z Intersil, HSP43220JC-25Z Datasheet - Page 7

• Manufacturer Part Number: HSP43220JC-25Z
• Description: IC DECIMATING DGTL FILTER 84PLCC
• Manufacturer: Intersil

Specifications of HSP43220JC-25Z

• Filter Type: Digital
• Number Of Filters: 4
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Cutoff Or Center: -
• Max-order: -

DDF Control Registers
FC_Register (A1 = 0, A0 = 1)
C19 C18 C17 C16 C15 C14 C13 C12 C11 C10
15
X
14
X
13
X
12
X
11
X
10
X
7
(Continued)
X
9
X
8
F_CF
F_CF
Bits C0-C19 represent the coefficient data, where C19 is the MSB. Two writes are
required to write each coefficient which is 2's complement fractional format. The first
write loads C19 through C4; C3 through C0 are loaded on the second write cycle. As
the coefficients are written into this register they are formatted into a 20-bit coefficient
and written into the Coefficient RAM sequentially starting with address location zero.
The coefficients must be loaded sequentially, with the center tap being the last
coefficient to be loaded. See “Coefficient RAM” on page 10.
X
7
X
6
C9
X
5
HSP43220
FIGURE 5.
C8
X
4
C7
C3
3
C6
C2
2
C5
C1
1
C4
C0
0
October 10, 2008
FN2486.10