CC2420 Chipcon AS, CC2420 Datasheet - Page 77

• Manufacturer Part Number: CC2420
• Description: 2.4 GHz RF Transceiver for IEEE 802.15.4 and ZigBee
• Manufacturer: Chipcon AS

ADCTST (0x2D) - ADC Test Register
15
14:8
7
6:0
DACTST (0x2E) - DAC Test Register
15
14:12
11:6
5:0
Chipcon AS SmartRF ® CC2420 Preliminary Datasheet (rev 1.0), 2003-11-17
Bit
Bit
Field Name
ADC_CLOCK_DISABLE
ADC_I[6:0]
-
ADC_Q[6:0]
Field Name
-
DAC_SRC[2:0]
DAC_I_O[5:0]
DAC_Q_O[5:0]
Reset
0
-
0
-
Reset
0
0
0
0
R/W
R/W
R
W0
R
R/W
W0
R/W
R/W
R/W
SmartRF
Description
ADC Clock Disable
0 : Clock enabled when ADC enabled
1 : Clock disabled, even if ADC is enabled
Read the current ADC I-branch value.
Reserved, write as 0.
Read the current ADC Q-branch value.
Description
Reserved, write as 0.
The TX DACs data source is selected by DAC_SRC according
to:
0: Normal operation (from modulator).
1: The DAC_I_O and DAC_Q_O override values below.-
2: From ADC, most significant bits
3: I/Q after digital downmixing and channel filtering.
4: Full-spectrum White Noise (from CRC)
5: From ADC, least significant bits
6: RSSI / Cordic Magnitude Output
7: HSSD module.
This feature will often require the DACs to be manually turned on
in MANOVR and PAMTST.ATESTMOD_MODE=4.
I-branch DAC override value.
Q-branch DAC override value.
®
CC2420
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