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參數(shù)資料
| 型號： | 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)： | 21/34頁 |
| 文件大小： | 325K |
| 代理商： | SA2400ABE |
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Philips Semiconductors
Product data
SA2400A
Single chip transceiver for 2.45 GHz ISM band
2002 Nov 04
21
Table 16. Address 02:
Synthesizer Register C
Note: Bits 22, 23 not used.
Bit
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
unused
CP[1:0]
SM[2:0]
‘0’
unused
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
Bit
Description
CP[1:0]
Charge pump current setting
SM[2:0]
Comparison divider select
Adds an extra divider at the end of the reference divider:
extra division ratio = 2^SM (SM = 0 to 4)
CP[1:0]
php
480
μ
A
160
μ
A
480
μ
A
160
μ
A
php-speedup
00
2.4 mA
800
μ
A
2.4 mA
800
μ
A
01
10
11
php-speedup
is activated when the speed-up bit is 1 (T
spu
in synthesizer register D). php-speedup is also entered after sending a synthesizer
register A word and stays active until a different word is sent. To prevent frequency deviations when leaving the speedup mode when
programming new words,
it is recommended to keep the speedup mode always disabled by setting the Tphpsu (0x03, bit 16) to ‘1’
.
NOTE:
The only recommended charge pump current setting mode is CP[1:0] = 10, php-speedup not activated.
Table 17. Address 03:
Synthesizer Register D
Note: Bits 22, 23 not used.
Bit
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
‘00000’
T
phpsu
0
T
spu
0
‘000000000000’
unused
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Description
T
phpsu
T
spu
1 –> disable PHP speedup pump, overrides function of T
spu
1 –> speedup ON
0 –> speedup OFF
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