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ISL29011IROZ-EVALZ 데이터시트(PDF) 10 Page - Intersil Corporation

부품명 ISL29011IROZ-EVALZ
상세설명  Digital Ambient Light Sensor and Proximity Sensor with Interrupt Function
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제조업체  INTERSIL [Intersil Corporation]
홈페이지  http://www.intersil.com/cda/home
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ISL29011
10
FN6467.6
May 1, 2014
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Register Set
There are eight registers that are available in the ISL29011.
Table 1 summarizes their functions.
Command Register I 00 (hex)
The first command register has the following functions:
1. Operation Mode; Bits 7, 6, and 5: These three bits are
determine the operation mode of the device.
2. Interrupt flag; Bit 2: This is the status bit of the interrupt. The bit
is set to logic high when the interrupt thresholds have been
triggered, and logic low when not yet triggered. Once triggered,
INT pin stays low and the status bit stays high. Both interrupt
pin and the status bit are automatically cleared at the end of
Command Register I transfer.
3. Interrupt persist; Bits 1 and 0: The interrupt pin and the
interrupt flag is triggered/set when the data sensor reading is
out of the interrupt threshold window after m consecutive
number of integration cycles. The interrupt persist bits
determine m.
Command Register II 01 (hex)
The second command register has the following functions:
1. Proximity Sensing Scheme; Bit 7: This bit programs the function
of the proximity detection. Logic 0 of this bit, Scheme 0, makes
full n (4, 8, 12, 16) bits (unsigned) proximity detection. The range
of Scheme 0 proximity count is from 0 to 2n. Logic 1 of this bit,
Scheme 1, makes n-1 (3, 7, 11, 15) bits (2’s complementary)
proximity_less_ambient detection. The range of Scheme 1
proximity count is from -2(n-1) to 2(n-1). The sign bit is extended
for resolutions less than 16. While Scheme 0 has wider dynamic
range, Scheme 1 proximity detection is less affected by the
ambient IR noise variation.
2. Modulation Frequency; Bit 6: This bit sets the IR LED driver’s
modulation frequency.
TABLE 1. REGISTER SET
ADDR
REG NAME
BIT
76
5
4
3
2
1
0
DEFAULT
00h
COMMANDI
OP2
OP1
OP0
0
0
FLAG
PRST1
PRST0
00h
01h
COMMANDII
Scheme
FREQ
IS1
IS0
RES1
RES0
RANGE1
RANGE0
00h
02h
DATALSB
D7
D6
D5
D4
D3
D2
D1
D0
00h
03h
DATAMSB
D15
D14
D13
D12
D11
D10
D9
D8
00h
04h
INT_LT_LSB
TL7
TL6
TL5
TL4
TL3
TL2
TL1
TL0
00h
05h
INT_LT_MSB
TL15
TL14
TL13
TL12
TL11
TL10
TL9
TL8
00h
06h
INT_HT_LSB
TH7
TH6
TH5
TH4
TH3
TH2
TH1
TH0
FFh
07h
INT_HT_MSB
TH15
TH14
TH13
TH12
TH11
TH10
TH9
TH8
FFh
08h
TEST
0
0
0
0
0
0
0
0
00h
TABLE 2. OPERATION MODE
BITS 7 TO 5
OPERATION
000
Power-down the device
001
ALS once
010
IR once
011
Proximity once
100
Reserved (Do not use)
101
ALS continuous
110
IR continuous
111
Proximity continuous
TABLE 3. INTERRUPT FLAG
BIT 2
OPERATION
0
Interrupt is cleared or not triggered yet
1
Interrupt is triggered
TABLE 4. INTERRUPT PERSIST
BITS 1 TO 0
NUMBER OF INTEGRATION CYCLES
00
1
01
4
10
8
11
16
TABLE 5. PROXIMITY SENSING SCHEME
BIT 7
OPERATION
0
Sensing IR from LED and ambient
1
Sensing IR from LED with ambient IR rejection
TABLE 6. MODULATION FREQUENCY
BIT 6
MODULATION FREQUENCY
(kHz)
0DC
1
360


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