CC2400 Chipcon AS, CC2400 Datasheet - Page 55

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

AGCCTRL (0x04) - AGC Control and Status
15:8
7:4
3
2
1
0
FREND (0x05) – Front-end Control Register
15:4
3
2:0
RSSI (0x06) - RSSI Status and Control Register
15:8
7:2
1:0
Chipcon AS
Bit
Bit
Bit
Field Name
VGA_GAIN [7:0]
-
AGC_LOCKED
AGC_LOCK
AGC_SYNC_LOCK
VGA_GAIN_OE
Field Name
-
PA_DIFF
PA_LEVEL[2:0]
Field Name
RSSI_VAL[7:0]
RSSI_CS_THRES[5:0]
RSSI_FILT[1:0]
SmartRF
®
CC2400 PRELIMINARY Datasheet (rev. 1.1), 2003-10-02
Reset
0XF7
0
0
0
0
0
Reset
0
1
7
Reset
-
0X3C
2
R/W
R/W
W0
R
R/W
R/W
R/W
R/W
W0
R/W
R/W
R/W
R
R/W
R/W
SmartRF
Description
When written, VGA manual gain override value; when read, the
currently used VGA gain setting.
Reserved, write as 0.
AGC lock status
Lock gain after maximum number of attempts.
Lock gain after sync word received and maximum number of
attempts. (As configured in
Attempts may be 0)
Use the
Description
Reserved, write as 0.
Indicates whether PA output is differential (1) or single-ended
(0).
PA output power level.
Description
Averaged RSSI estimate on a logarithmic scale. Unit is 1 dB.
Offset= -54dB, see also page 41.
Carrier sense signal threshold value. Unit is 4 dB.
The CS_ABOVE_THRESHOLD_N signal goes low when the
received signal is above this value.
The CS_ABOVE_THRESHOLD_N signal is available on the
GIO1 pin or in the status word returned during SPI address byte.
The reset value corresponds to a threshold of approx. -69 dBm.
RSSI averaging filter length:
0: 0 bits (no filtering)
1: 1 bit
2: 4 bits
3: 8 bits
VGA_GAIN
value during RX instead of the AGC value.
®
AGCTST0.AGC_ATTEMPTS
CC2400
Page 55 of 73
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