參數(shù)資料
型號: SA2400A
廠商: NXP Semiconductors N.V.
英文描述: Single chip transceiver for 2.45 GHz ISM band
中文描述: 單為2.45 GHz的ISM頻帶收發(fā)器芯片
文件頁數(shù): 22/34頁
文件大?。?/td> 325K
代理商: SA2400A
Philips Semiconductors
Product data
SA2400A
Single chip transceiver for 2.45 GHz ISM band
2002 Nov 04
22
Table 18. Address 04:
Main chip operation modes, filter tuner, other controls
Bit
Name
Default
23
22
‘0000’
0
21
20
19
adc
0
18
fterr
0
17
16
15
14
v2p5
0
13
I1m
0
12
I0p3
1
11
n.u.
0
10
in22
0
9
8
xo
1
7
6
5
4
3
2
1
0
Filttune
1
clk
1
digin
0
rxlv
0
veo
0
vei
0
Chip mode
0
0
0
0
0
1
0
0
0
Bit #
0–3
Name
Chip mode
Description
Main mode of operation. Coding according to following table:
Bit3
Bit2
Bit1
Bit0
Mode
0
0
0
0
SLEEP
0
0
0
1
TX/RX
0
0
1
0
WAIT
0
0
1
1
RXMGC
0
1
0
0
FCALIB
0
1
0
1
DCALIB
0
1
1
0
FASTTXRXMGC
0
1
1
1
RESET
1
0
0
0
VCOCALIB
Notes on modes:
All calibration modes (*CALIB) require the crystal oscillator to be ON (bit XO = 1).
DCALIB (Tx LO leakage calibration) requires being in Tx mode for 5
μ
s before calibration.
Use external vco input (vcoextin)
Make internal vco available at vco pads (vcoextout)
Rx output common mode voltage: 0–V
DD
/2, 1–1.25 V
Use digital Tx inputs (FIRDAC)
Xtal oscillator ON
Reference clock output ON
Xtal input frequency: 0–44 MHz, 1–22 MHz
4
5
6
7
8
9
10
11
12
13
14
15–17
vei
veo
rxlv
digin
xo
clk
in22
Not used
I0p3
I1m
v2p5
filttune
External reference current (pad idcout): 0.3 mA to ground
External reference current (pad idcout): 1.0 mA from supply
External reference voltage (pad v2p5) ON
Rx and Tx filter tuning bits:
Write:
(with test mode only), these bits set tuning value
Read:
(in normal mode) tuner setting can be read out here
18
19
fterr
adc
Filter tuner error (read only): result is 1 when tuner exceeded range
‘1’: in Rx mode, the RSSI-ADC is always on.
‘0’: the RSSI-ADC is only on during AGC operation.
Table 19. Address 05:
AGC adjustment settings
Bit
Name
Default
23
22
21
20
19
18
Rx AGC Gmax
79 dB – 11001
17
16
15
14
13
12
11
10
9
8
7
6
5
4
AGC_rxondel/sample1
27(4.9
μ
s) – 11011
3
2
1
0
Rx AGC target
±
(0)
AGC_bbdel/ADCval
7(1.3
μ
s) – 00111
AGC_lnadel/sample2
15(2.7
μ
s) – 01111
val(000)
Bit #
0–4
Name
AGC_rxondel/s1
Description
Write:
Programmable delay for AGC algorithm: Rx turn-on to AGCSET. In units of 182 ns (5.5 MHz)
Read:
1
st
sample of RSSI in AGC cycle
Write:
Programmable delay for AGC algorithm: Settling time after LNA gain switching. In units of 182 ns (5.5 MHz)
Read:
2
nd
sample of RSSI in AGC cycle
Write:
Programmable delay for AGC algorithm: Settling time after baseband gain switching. In units of 182 ns
(5.5 MHz)
Read:
Output of RSSI/Tx–peak detector ADC in 5-bit Gray code
5–9
AGC_lnadel/s2
10–14
AGC_bbdel/ADCval
15–19
20–23
AGC Gmax
AGC target
Rx AGC gain limit (54 dB + programmed value) (valid: 54 through 85)
Adjustment value to AGC settling target, range –7 dB
7 dB (sign plus three bits)
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