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T2802 Datasheet(PDF) 20 Page - ATMEL Corporation

No. de pieza T2802
Descripción Electrónicos  2.4 GHz WDECT/ISM SINGLE-CHIP TRANSCEIVER
PDF  29 Pages
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Fabricante Electrónico  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

T2802 Datasheet(HTML) 20 Page - ATMEL Corporation

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T2802
4509F–DECT–10/03
RAMPDAC Adjustment
for TX Mode
MCCS Adjustment
TEST Mode Settings
With bits E6 - E10
Only in TX mode effective. Used to control the power of the external PA by adjusting the
ramping voltage.
RAMPDAC Voltage (at Pin 36 RAMP_OUT)
E10
E9E8E7E6
V
RAMP_OUT
000
00
1.1 V
000
01
...
000
10
...
...
...
...
...
...
...
101
11
1.68 V
110
00
1.7 V
...
...
...
...
...
...
111
10
...
111
11
1.7 V
With bits E3 - E5
Only in TX mode effective. Adjusts the modulation compensation circuit for closed-loop
modulation. This adjustment is done with a test sequence of a long stream of ,1‘ - ,0‘.
The correct setting is achieved if the modulation is not affected by the PLL.
MCCS (Modulation Compensation Settings)
E5
E4
E3
MCCS
00
0
60%
00
1
70%
01
0
80%
01
1
90%
1
0
0
100%
1
0
1
110%
1
1
0
120%
1
1
1
130%
With bits E0 - E2
In normal operation Lock detect output is used. All other settings are for test only.
E2
E1
E0
Signal at Lock Detect Output
CP Mode
0
0
0
Lock detect
Active
0
0
1
PC out/2
Active
0
1
0
RC out/2
Active
0
1
1
MCCTEST: RC out divided by 512
Active
1
0
0
Lock detect
High imp.
1
0
1
PC out/2
High imp.
1
1
0
RC out/2
High imp.
111
GFTEST: RC out
High imp.



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