ISL5239KIZ Intersil, ISL5239KIZ Datasheet - Page 25

• Manufacturer Part Number: ISL5239KIZ
• Description: IC LINEARIZER PRE-DISTORT 196BGA
• Manufacturer: Intersil

Specifications of ISL5239KIZ

• Function: Pre-Distortion Linearizer
• Rf Type: CDMA2000, UMTS
• Secondary Attributes: Sample Rates to 125MSPS
• Package / Case: 196-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15:14
13:12
15:13
15:14
11:10
15:14
15:14
11:0
12:0
13:0
13:0
15:0
BIT
BIT
BIT
BIT
BIT
BIT
9:0
13
12
Reserved
Magnitude Function
Select
Address Offset
Reserved
Address Scale
Reserved
Active LUT
LUT Address Auto
Increment
Reserved
LUT Address
Reserved
LUT Data Delta Q
Reserved
LUT Data Delta I
LUT Data Q
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
25
Linear offset of magnitude function when calculating LUT address (e.g. power backoff) Selectable from
Not Used.
Linear scale of magnitude function when calculating LUT address (e.g. db/LSB) Selectable from (0.(64-
Not Used.
Selects which ping pong LUT is currently in use. The opposite LUT shall be accessible through the
Delta imaginary Data written to or read back from LUT. Delta Q controls memory effect. Selectable as (-
Not used
Selects the magnitude calculation function as:
00 - Log. Log base 2 of magnitude squared computed as log2(I
01 - Linear. Linear magnitude computed as sqrt (I
10 - Power. Magnitude squared computed as (I
(-1024...1024) in increments of 2
address. Clearing the LSB causes truncation. (0xFFFFF --> 0x00000 maps to -1024 to 0, and 0x00001 -
-> 0x7FFFF maps to 0.5 to 1023.5).
increment)), in increments of 2
processor interface.
0 - Use LUT 0, access LUT 1.
1 - Use LUT 1, access LUT 0.
Set high to automatically increment LUT address after any access operation (read/write). Default is low,
not auto increment.
Not used.
Address for index into LUT. Default = 0, pointer to next LUT location.
Not used.
0.125...(0.125-increment)) in increments of 2
Not used.
Delta real data written to or read back from LUT. Delta I controls memory effect. Selectable as (-
0.125...(0.125-increment)) in increments of 2
Imaginary distortion data written to or read back from LUT. Selectable as (-0.5...(0.5-increment)) in
increments of 2
TABLE 21. I - MAGNITUDE FUNCTION SCALE FACTOR
TABLE 23. LOOK-UP TABLE DELTA IMAGINARY DATA
TABLE 24. LOOK-UP TABLE DELTA REAL DATA
TABLE 25. LOOK-UP TABLE IMAGINARY DATA
TABLE 20. MAGNITUDE FUNCTION CONTROL
TABLE 22. Q - LOOK-UP TABLE CONTROL
TYPE: PRE-DISTORTER, ADDRESS: 0x11
TYPE: PRE-DISTORTER, ADDRESS: 0x12
TYPE: PRE-DISTORTER, ADDRESS: 0x13
TYPE: PRE-DISTORTER, ADDRESS: 0x14
TYPE: PRE-DISTORTER, ADDRESS: 0x15
TYPE: PRE-DISTORTER, ADDRESS: 0x16
-16
. Default = 0.
ISL5239
-7
.
-1
. Note: Setting the LSB of this value permits rounding of the resulting
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
-16
-16
2
. Default = 0.
. Default = 0.
+ Q
2
+ Q
2
)
2
)
2
+ Q
2
)