參數(shù)資料
型號(hào)： SA2400ABE
廠商： NXP SEMICONDUCTORS
元件分類： 無繩電話/電話
英文描述： Single chip transceiver for 2.45 GHz ISM band
中文描述： TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, SOT-313-2, LQFP-48
文件頁數(shù)： 23/34頁
文件大小： 325K
代理商： SA2400ABE
Philips Semiconductors
Product data
SA2400A
Single chip transceiver for 2.45 GHz ISM band
2002 Nov 04
23
Table 20. Address 06:
Manual receiver control settings
Bit
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
ahsn
osQ
rxosQval
osI
rxosIval
ten
Corner f
Receiver gain
Default
0
0
±
(0)
val (000)
0
±
(0)
val (000)
1
0
0
1
1
1
1
1
1
1
1
1
1
Bit #
Name
Description
0–9
receiver gain
Write:
In RXMGC mode, this sets the receiver gain.
Read:
In other modes, the AGC controlled gain is available for readout here.
Bit positions:
0–plus1dB; 1–vga2dB; 2–vga4dB; 3–vga8dB; 4–vga16dB; 5–vga10dB; 6–filter6dB2; 7–filter10dB;
8–filter6dB1; 9–lna16dB
10–11
corner freq.
DC offset cancellation cornerpoint select.
Write:
In RXMGC mode, this sets the cornerpoint.
Read:
In other modes, the cornerpoint as controlled by the AGC is available for readout here.
Code: 00–10 kHz, 01–100 kHz, 10–1 MHz, 11–10 MHz
12
ten
Use 10 MHz offset cancellation cornerpoint for brief period after each gain change
Receiver output driver manual offset adjustment. Code: {rxosXon,rxosXval} = ‘0xxxx’
→
offset = 0;
{rxosXon,rxosXval} = ‘10000’
→
offset = 8 mV; {rxosXon,rxosXval} = ‘11000’
→
offset = –8 mV;
{rxosXon,rxosXval} = ‘10001’
→
offset = 16 mV etc.
13–22
Rx offset I,Q
13–16
rxosIval
Rx offset correction, I channel, value (sign plus three bits)
17
rxosIon
Rx offset correction, I channel, ON
18–21
rxosQval
Rx offset correction, Q channel, value (sign plus three bits)
22
rxosQon
Rx offset correction, Q channel, ON
23
ahsn
AGC with high Signal-to-Noise (switch LNA at step 52 instead of step 60).
Recommended to set to ‘1’.
Table 21. Address 07:
Transmitter settings
Bit
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
‘0000’
osQ
TxosQval
osI
txosIval
txramp
Tx gain hi
Tx gain low
Default
0
0
0
0
0
±
(0)
val (000)
0
±
(0)
val (000)
0
0
0 dB (0000)
15 dB (1111)
Bit #
Name
Description
0–3
Tx gain low
Transmitter gain settings for TXLO output
4–7
Tx gain hi
Transmitter gain settings for TXHI output
Tx ramp-up delay programming: 00–1
μ
s, 01–2
μ
s, 10–3
μ
s, 11–4
μ
s. Ramp-up time always 1
μ
s.
Tx carrier leakage calibration:
Write:
with test mode, these bits set the offset.
Read:
in normal mode, automatically controlled settings can be read out here (sign plus three bits).
Code: {txosXon,txosXval} = ‘0xxxx’
→
offset = 0; {txosXon,txosXval} = ‘10000’
→
offset = 2.5
μ
A;
{txosXon,txosXval} = ‘11000’
→
offset = –2.5
μ
A; {txosXon,txosXval} = ‘10001’
→
offset = 5.0
μ
A etc.
Tx offset correction, I channel, value (sign plus three bits)
8–9
txramp
10–19
Tx offset I, Q
10–13
txosIval
14
txosIon
Tx offset correction, I channel ON
15–18
txsoQval
Tx offset correction, Q channel, value (sign plus three bits)
19
txosQon
Tx offset correction, Q channel ON
Table 22. Address 08:
VCO settings
Bit
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
name
these bits do not exist on IC
not used
‘0’
‘0’
vcerr
vcoband
default
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
0
0
0
0
0
0
0
0
0
Bit #
Name
Description
0–3
vcoband
VCO band.
Write:
with test mode, these bits set the VCO band.
Read:
in normal mode, the result ot the calibration (VCOCAL) can be read out here (0000 = highest frequencies).
4
vcerr
VCO calibration error flag (no band with low enough frequency could be found).
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