CC2400 Chipcon AS, CC2400 Datasheet - Page 64

• Manufacturer Part Number: CC2400
• Description: 2.4 GHz RF Transceiver
• Manufacturer: Chipcon AS

FSTST0 (0x1A) - Frequency Synthesiser Test Register 0
15:14
13:12
11
10
9:5
4:0
FSTST1 (0x1B) - Frequency Synthesiser Test Register 1
15
14
13:10
9:4
3
2:0
Chipcon AS
Bit
Bit
Field Name
RXMIXBUF_CUR[1:0]
TXMIXBUF_CUR[1:0]
VCO_ARRAY_SETTLE_LONG
VCO_ARRAY_OE
VCO_ARRAY_O[4:0]
VCO_ARRAY_RES[4:0]
Field Name
RXBPF_LOCUR
RXBPF_MIDCUR
VCO_CURRENT_REF[3:0]
VCO_CURRENT_K[5:0]
VC_DAC_EN
VC_DAC_VAL[2:0]
SmartRF
®
CC2400 PRELIMINARY Datasheet (rev. 1.1), 2003-10-02
Reset
2
2
0
0
16
-
Reset
0
0
4
0
0
2
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
SmartRF
Description
RX mixer buffer bias current.
0: 690uA
1: 980uA
2: 1.16mA (nominal)
3: 1.44mA
TX mixer buffer bias current.
0: 690uA
1: 980uA
2: 1.16mA (nominal)
3: 1.44mA
When '1' this control bit doubles the time allowed for VCO
settling during FS calibration.
VCO array manual override enable.
VCO array override value.
The resulting VCO array setting from the last calibration.
Description
Controls reference bias current to RX band-pass filters:
0: 4 uA (nominal)
1: 3 uA
Controls reference bias current to RX band-pass filters:
0: 4 uA (nominal)
1: 3.5 uA
The value of the reference current calibrated against during VCO
calibration.
VCO current calibration constant (override value current B when
FSTST2.VCO_CURRENT_OE
Controls the source of the VCO control voltage in normal
operation (
0: Loop filter (closed loop PLL)
1: VC DAC (open loop PLL)
VC DAC output value. (The value of the reference voltage used
during VCO calibration.)
PAMTST.VC_IN_TEST_EN
®
CC2400
=1).
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