ISL5217_05 INTERSIL [Intersil Corporation], ISL5217_05 Datasheet - Page 8
![no-image](/images/no-image-200.jpg)
ISL5217_05
Manufacturer Part Number
ISL5217_05
Description
Quad Programmable Up Converter
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
1.ISL5217_05.pdf
(43 pages)
- Current page: 8 of 43
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Data Modulation Path
Three data path options are provided, one for each
modulation format. The modulation format is selected using
FIR Control (0xd, 3:2). The modulation paths are defined in
the following subsections.
†
All Registers are clocked at CLK unless shown otherwise.
Write_FIFO
DLY DATA
FIFORDY
P<15:0>
A<6:0>
DFF 1
DFF 2
DFF 3
DFF 4
REG1
WR
CLK
FIGURE 5. FIFO DATA AND ENABLE TIMING
SDA
SDB
SDC
SDD
FIFO NEEDS
MORE DATA
A(000)
0X11, 1:0
WR
1
2
8
0X0, 15:0
0X1, 15:0
0X11, 3:2
0X12, 9:0
0X13, 9:0
DFF1
>
3
G
R
E
4
>
R
E
G
DFF2
FIGURE 6. I AND Q FIFO BLOCK DIAGRAM
FIFO NEEDS
MORE DATA
SERIAL_WRITE_TO_FIFO
0X11, 15
CLOCK SYNCHRONIZATION
>
G
I SAMPLE (15:0)
R
E
Q SAMPLE (15:0)
DFF3
>
R
E
G
DFF4
ISL5217
ZERO’S
FM ENABLED
0XC, 10:8
ALMOST EMPTY
THRESHOLD
A(2:0)
0X11, 15
>
>
R
E
G
R
E
G
>
>
R
G
R
G
E
E
>
>
R
E
G
R
E
G
8:1 MUX
8:1 MUX
>
>
R
G
R
G
E
E
WRITE_FIFO
>
>
R
E
G
R
E
G
>
>
R
G
R
G
E
E
>
>
FIFORDY
R
E
G
R
E
G
QFIFO(15:0)
IFIFO(15:0)
WRITE_FIFO
July 8, 2005
FN6004.3
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