參數(shù)資料
型號(hào): TSL2550
廠商: Electronic Theatre Controls, Inc.
英文描述: AMBIENT LIGHT SENSOR WITH SMBus INTERFACE
中文描述: 常溫與SMBus接口光傳感器
文件頁數(shù): 10/14頁
文件大?。?/td> 147K
代理商: TSL2550
TSL2550
AMBIENT LIGHT SENSOR
WITH SMBus INTERFACE
TAOS029 – SEPTEMBER 2002
10
Copyright 2002, TAOS Inc.
The LUMENOLOGY Company
www.taosinc.com
Table 4. CHORD and STEP Numbers and Values vs Register Bits
CHORD
BITS
B6, B5, B4
000
C, CHORD
NUMBER
CHORD
VALUE
(Note A)
0
STEP
VALUE
(Note B)
1
STEP
BITS
B3, B2, B1, B0
S, STEP
NUMBER
0
0000
0
001
1
16
2
0001
1
010
2
49
4
0010
2
011
3
115
8
0011
3
100
4
247
16
0100
4
101
5
511
32
0101
5
110
6
1039
64
0110
6
111
7
2095
128
0111
7
1000
8
1001
9
1010
10
1011
11
1100
12
1101
13
1110
14
1111
15
NOTES: A. CHORD VALUE = INT (16.5
×
((2
C
) – 1))
B. STEP VALUE = 2
C
The ADC count value is obtained by adding the CHORD VALUE and the product of the STEP NUMBER and
STEP VALUE (which depends on CHORD NUMBER).
ADC Count Value
((Chord Value)
(Step Size)
(Number of Steps))
The ADC count value is as a formula:
ADC Count Value
(INT (16.5
((2
C
1)))
(S
(2
C
))
where:
C
S
as defined in Table 4.
is the CHORD NUMBER (0 to 7)
is the STEP NUMBER (0 to 15)
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