SI3220PPTX-EVB Silicon Laboratories Inc, SI3220PPTX-EVB Datasheet - Page 48
SI3220PPTX-EVB
Manufacturer Part Number
SI3220PPTX-EVB
Description
BOARD EVAL W/DISCRETE INTERFACE
Manufacturer
Silicon Laboratories Inc
Series
ProSLIC®r
Datasheet
1.SI3200-G-FSR.pdf
(112 pages)
Specifications of SI3220PPTX-EVB
Main Purpose
Interface, Analog Front End (AFE)
Utilized Ic / Part
Si3220
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
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Si3220/25 Si3200/02
48
I
I
I
I
Q2
Q5
Q6
Q1
#
1
2
3
4
5
LOOP CLOSURE
LOOP OPEN
LOOP OPEN
Processor
RING-GND
RING-GND
Signal
Input
LFS
Loop
State
Table 27. State Transitions During Ground Key Detection
I
LONG
Figure 22. Ground Key Detection Circuitry
(FWD-ACTIVE)
(FWD-ACTIVE)
(FWD-ACTIVE)
(TIP-OPEN)
(TIP-OPEN)
LINEFEED
LONGLPF
Digital
LFS = 3
LFS = 3
LFS = 1
LFS = 1
LFS = 1
LPF
State
LONGHITH
Ground Key
Threshold
Rev. 1.3
LONGLOTH
–
+
I
(mA)
LOOP
22
22
21
0
0
I
(mA)
LONG
–11
–11
Debounce
LONGDBI
0
0
0
Filter
LCR
0
1
1
1
0
LONGHI
LONGHI
Interrupt
LONGE
Logic
0
1
1
0
0
CMHIGH
0
0
1
0
0
LONGS
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