ISL5416KI Intersil, ISL5416KI Datasheet - Page 52

• Manufacturer Part Number: ISL5416KI
• Description: Up/Down Conv Mixer 1.8V 256-Pin BGA
• Manufacturer: Intersil

Specifications of ISL5416KI

• Package: 256BGA
• Operating Supply Voltage: 1.8 V

d
P(31:0)
P(31:0)
31:16
15:0
6
5
4
3
2
1
0
TABLE 61. AGC CONTROL, MEAN/MEDIAN, DELAY, MODE (IWA = *008h) RESET STATE = 0x00000000h (Continued)
LOOP GAIN 2 MEAN/MEDIAN.
1 = AGC settles to mean of the signal if LG2 is selected.
0 = AGC settles to median of the signal.
uP LOOP GAIN SELECT. Set to:
1 = loop gain 2.
0 = loop gain 1.
uP LOOP GAIN CONTROL. Set to:
1 = uP loop gain select.
0 = counter controlled loop gain select.
DISABLE LOOP FILTER UPDATE. Set to:
1 = disable loop filter (holds the last value, the uP can load).
0 = normal AGC operation.
SAMPLED MODE.
1 = continuous forward gain updates.
0 = the forward gain held during the interval count (when loop gain 1 is used). The forward gain is continuously updated after the
interval count (when loop gain 2 is used).
ENABLE DELAY. Set to:
1 = enable delay
0 = no delay
NOTE: Delay must be enabled for Sampled Mode.
RESERVED. Set to 0.
CONTINUOUS UPDATE
µP controls loop gain
CONTIUOUS WITH DELAY
TIMED LOOP GAIN SELECTION
TIMED WITH DELAY
SAMPLED GAIN UPDATES
(always with delay)
UNUSED.
SET POINT. Bit weights:
2^
2 1 0. 1 2 3 4 5 6 7 8 9 0 1 2 3, 2
Note: There is a gain in the magnitude computation prior to the threshold compare. The gain versus number of clocks is:
CLOCKS
16
8
4
3
2
The set point should be programmed to the desired level times the magnitude gain.
TABLE 63. THRESHOLD (SET POINT) (IWA = *009h) RESET STATE = 0x00000000h
AGC MODE
52
GAIN
1.64676
1.647
1.642
1.630
1.581
TABLE 62. CONTROL BIT SETTINGS FOR AGC MODES
0
is the full scale vector magnitude on one axis before the magnitude computation gain is applied.
ISL5416
IWA=*001h
BIT 20
0
0
1
1
1
FUNCTION
FUNCTION
BIT 4
1
1
0
0
0
IWA = *008h
BIT 2
1
1
1
1
0
BIT 1
0
1
0
1
1