參數(shù)資料
型號(hào)： ISL5239EVAL1
廠商： Intersil Corporation
英文描述： Pre-Distortion Linearizer
中文描述： 預(yù)失真線性化電路
文件頁數(shù)： 21/31頁
文件大?。?/td> 653K
代理商： ISL5239EVAL1
21
TABLE 5. CONTROL
TYPE: INPUT FORMATTER AND INTERPOLATOR, ADDRESS: 0x02
BIT
FUNCTION
DESCRIPTION
15
Reserved
Not used.
14
Clear Status
Set high to clear all status bits, set low (default) to allow the status bits to update.
13:8
Reserved
Internal use only.
7
Reserved
Not used.
6:4
Interpolation Factor
The chip upsamples its input data by x1, x2, x4, or x8, and it performs the appropriate filtering to reject
the images created by the upsampling operation. Interpolation by 1 bypasses all the interpolation filters.
000 - x1 (default)
001 - x2
011 - x4
111 - x8
010, 100, 101, 110 Internal Use Only.
3
Reserved
Not used.
2
Input Sequence Type
The type of sample sequence of the Input Formatter and Interpolator input data IIN<17:0>, QIN<17:0>.
0 - PARALLEL. (default) The chip receives I and Q data in parallel through IIN<17:0>, QIN<17:0>The chip
ignores the input signal, ISTRB, in this mode.
1 - SERIAL. The chip receives I and Q data in a serial stream through IIN<17:0>. The serial stream
alternates between I and Q samples, and the chip uses the input signal, ISTRB, to detect which samples
are I and which samples are Q. The chip ignores the input signal QIN<17:0> in this mode.
1
Input Value Type
Allows selection of the input type as 2’s complement or offset binary.
0 - 2’s complement (default) Input data.
1 - Offset Binary Input data.
0
Soft Reset
Soft reset that, when high, resets all input formatter and interpolator circuitry except the control fields.
TABLE 6. STATUS
TYPE: INPUT FORMATTER AND INTERPOLATOR, ADDRESS: 0x03
BIT
FUNCTION
DESCRIPTION
15:14
Reserved
Not used.
13
Reserved
Internal use only.
12:8
Reserved
Internal use only.
7
HB 3 Q Saturation
When high, bit indicates HB 3 saturated at least one sample in the Q channel since the last clear status
command. Invalid when Interpolation factor < x8.
6
HB 3 I Saturation
When high, bit indicates HB 3 saturated at least one sample in the I channel since the last clear status
command. Invalid when Interpolation factor < x8.
5
HB 2 Q Saturation
When high, bit indicates HB 2 saturated at least one sample in the Q channel since the last clear status
command. Invalid when Interpolation factor < x8.
4
HB 2 I Saturation
When high, bit indicates HB 2 saturated at least one sample in the I channel since the last clear status
command. Invalid when Interpolation factor < x8.
3
HB 1Q Saturation
When high, bit indicates HB 1 saturated at least one sample in the Q channel since the last clear status
command. Invalid when Interpolation factor < x2.
2
HB 1I Saturation
When high, bit indicates HB 1 saturated at least one sample in the I channel since the last clear status
command. Invalid when Interpolation factor < x2.
1
Serial Mode Error
When high, indicated the input formatter and interpolator block performed an illegal operation since the
last clear status command.
0
Serial Mode Error Active
When high, indicates the input formatter and interpolator block is performing an illegal operation. Not
impacted by the clear status command.
ISL5239
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