參數(shù)資料
型號(hào)： ISL5239KIZ
廠商： INTERSIL CORP
元件分類： 消費(fèi)家電
英文描述： Pre-Distortion Linearizer
中文描述： SPECIALTY CONSUMER CIRCUIT, PBGA196
封裝： 15 X 15 MM, ROHS COMPLIANT, PLASTIC, BGA-196
文件頁(yè)數(shù)： 22/31頁(yè)
文件大?。?/td> 653K
代理商： ISL5239KIZ
22
TABLE 7. CONTROL
TYPE: CAPTURE MEMORY, ADDRESS: 0x04
BIT
FUNCTION
DESCRIPTION
15:14
Reserved
Not used.
13
Address Auto Increment
When set high, automatically increments the memory address after any access operation (read or write).
12
Memory Select
Selects the memory for access.
0 - Input memory (default).
1 - Feedback memory.
11:9
Reserved
Not used.
8
Feedback Input Format
Selects the feedback input format.
0 - Parallel (default) uses FB<19:0> as a 20-bit parallel input.
1 - Serial uses FB<0> as the input data bit and FB<1> as the serial sync, sampled at the rising edge of
FBCLK.
7
Reserved
Not used.
6
Processor Trigger
When high, enables the trigger. Low (default) is trigger disabled.
5:4
Trigger Select
Selects the trigger mode.
00 - Processor trigger used (default).
01 - Magnitude trigger when min threshold <= magnitude <= maximum threshold.
10 - External trigger.
3
Reserved
Not used.
2:1
Input Memory Data in
Source
Select the input memory dataIn Source.
00 - Interpolator output (default).
01 - Pre-distortion Output.
10 - Pre-distortion Magnitude.
0
CM Soft Reset
When high, resets all the configuration memory circuitry except the control fields. Low is default.
TABLE 8. LENGTH OF INPUT MEMORY LOOP
TYPE: CAPTURE MEMORY, ADDRESS: 0x05
BIT
FUNCTION
DESCRIPTION
15:11
Reserved
Not Used
10:0
Input Length
Length of the input memory loop. Specified from 2
0
(1) to 2
11
(2047). Default = 0. Resets the input
memory address to 0 when input length reached. Actual loop length is this value + 2.
TABLE 9. INPUT MEMORY CAPTURE MODE AND TRIGGER DELAY
TYPE: CAPTURE MEMORY, ADDRESS: 0x06
BIT
FUNCTION
DESCRIPTION
15
Input Memory Capture
Mode
Selects the active capture mode when the input capture memory is running. Identical to feedback capture
mode except applies to the input memory.
0 - Delay. (default) Defines the beginning of the 2k sample capture window as the trigger point plus the
input trigger delay counter samples.
1 - Advance. Defines the end of the 2k-sample capture window as the trigger point plus the input trigger
delay counter samples.
See control word 0x07, bit 1:0 for mode selection.
14:0
Input Trigger Delay
Counter
Offset delay that defines the input memory capture window when control word 0x07, bits 1:0 = 01
(Capture mode).
When control word 0x06, bit 15 is set to 0, delay mode, values selectable from 2
0
to 2
15
(0...32768).
When control word 0x06, bit 15 is set to 1, advance mode, value selectable from 2
0
to 2
11
(0...2047).
ISL5239
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