T2802 ATMEL [ATMEL Corporation], T2802 Datasheet - Page 20

• Manufacturer Part Number: T2802
• Description: 2.4 GHz WDECT/ISM SINGLE-CHIP TRANSCEIVER
• Manufacturer: ATMEL [ATMEL Corporation]

RAMPDAC Adjustment
for TX Mode
MCCS Adjustment
TEST Mode Settings
20
T2802
With bits E6 - E10
Only in TX mode effective. Used to control the power of the external PA by adjusting the
ramping voltage.
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.
With bits E0 - E2
In normal operation Lock detect output is used. All other settings are for test only.
E10
...
...
E2
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
E5
0
0
0
0
1
1
1
1
E9
...
...
0
0
0
0
1
1
1
E1
0
0
1
1
0
0
1
1
E8
...
...
0
0
0
1
0
1
1
E0
MCCS (Modulation Compensation Settings)
0
1
0
1
0
1
0
1
RAMPDAC Voltage (at Pin 36 RAMP_OUT)
E7
...
...
0
0
1
1
0
1
1
E4
0
0
1
1
0
0
1
1
MCCTEST: RC out divided by 512
Signal at Lock Detect Output
E6
...
...
0
1
0
1
0
0
1
GFTEST: RC out
Lock detect
Lock detect
RC out/2
RC out/2
PC out/2
PC out/2
E3
0
1
0
1
0
1
0
1
V
RAMP_OUT
1.68 V
1.1 V
1.7 V
1.7 V
...
...
...
...
...
MCCS
100%
110%
120%
130%
4509F–DECT–10/03
60%
70%
80%
90%
CP Mode
High imp.
High imp.
High imp.
High imp.
Active
Active
Active
Active