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AS7000 数据表(PDF) 19 Page - ams AG

部件名 AS7000
功能描述  The AS7000 device provides a flexible analog front end for light sensing applications
PDF  92 Pages
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制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS7000 数据表(HTML) 19 Page - ams AG

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ams Datasheet
Page 19
[v1-12] 2018-Feb-26
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AS7000 − Detailed Description
AFE_PD_CFG Register (Addr: 0x08)
The AFE_PD_CFG register is used to configure the input to the
photo amplifier.
Figure 16:
AFE_PD_CFG Register
Note(s):
1. SC_WS: Self clear, write sets: These registers are reset by the hardware. Set to ‘1’ before using them.
Addr: 0x08
AFE_PD_CFG
Bit
Bit Name
Default
Access
Description
25
sd_hld
0
R/W
SD hold
0 …Output of synchronous demodulator is forced to
SIGREF if not set to +1 or -1
1… Output of synchronous demodulator is tristated if not
set to +1 or -1
23
led4_
supply_low
0
SC_WS (1)
If this bit is cleared, LED4 current sink voltage was below its
compliance voltage
22
led3_
supply_low
0
SC_WS (1)
If this bit is cleared, LED3 current sink voltage was below its
compliance voltage.
21
led2_
supply_low
0
SC_WS (1)
If this bit is cleared, LED2 current sink voltage was below its
compliance voltage.
20
led1_
supply_low
0
SC_WS (1)
If this bit is cleared, LED1 current sink voltage was below its
compliance voltage.
15:8
pdoffx
0x00
R/W
Input offset current
Ioffset = pdoffx*10nA
00000000…Offset source is turned OFF
5pd4
0
R/W
0 …Photodiode PD4 is disconnected from photo amplifier
1 …Photodiode PD4 is connected to photo amplifier (as
defined in diode_ctrl)
4pd3
0
R/W
0 …Photodiode PD3 is disconnected from photo amplifier
1 …Photodiode PD3 is connected to photo amplifier (as
defined in diode_ctrl)
3pd2
0
R/W
0 …Photodiode PD2 is disconnected from photo amplifier
1 …Photodiode PD2 is connected to photo amplifier (as
defined in diode_ctrl)
2pd1
0
R/W
0 …Photodiode PD1 is disconnected from photo amplifier
1 …Photodiode PD1 is connected to photo amplifier (as
defined in diode_ctrl)
1pdi_1
0
R/W
0 …GPIO7-input is disconnected from photo amplifier
1 …GPIO7-input is connected to photo amplifier
0pdi_0
0
R/W
0 …GPIO6-input is disconnected from photo amplifier
1 …GPIO6-input is connected to photo amplifier



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