參數(shù)資料
型號(hào): SI3220DCX-EVB
廠商: Silicon Laboratories Inc
文件頁(yè)數(shù): 57/112頁(yè)
文件大小: 0K
描述: DAUGHTER CARD W/DISCRETE INTRFC
標(biāo)準(zhǔn)包裝: 1
系列: ProSLIC®
主要目的: 接口,模擬前端(AFE)
已用 IC / 零件: Si3220
已供物品: 板,CD
Si3220/25 Si3200/02
Rev. 1.3
49
Not
Recommended
fo
r N
ew
D
esi
gn
s
Table 28. Register and RAM Locations Used for Ground Key Detection
Parameter
Register/
RAM
Mnemonics
Register/RAM
Bits
Programmable
Range
LSB
Size
Resolution
Ground Key Interrupt Pending
IRQVEC2
LONGS
Yes/No
N/A
Ground Key Interrupt Enable
IRQEN2
LONGE
Yes/No
N/A
Ground Key Linefeed Shadow
LINEFEED
LFS[2:0]
Monitor only
N/A
Ground Key Detect Status
LCRRTP
LONGHI
Monitor only
N/A
Ground Key Detect Debounce
Interval
LONGDBI
LONGDBI[15:0]
0 to 40.96 s
1.25 ms
Longitudinal Current Sense
ILONG
ILONG[15:0]
Monitor only
Ground Key Threshold
(enabled)
LONGHITH
LONG-
HITH[15:0]
0 to
101.09 mA*
3.097 A
396.4 A
Ground Key Threshold
(released)
LONGLOTH
LON-
GLOTH[15:0]
0 to
101.09 mA*
3.097 A
396.4 A
Ground Key Filter Coefficient
LONGLPF
LONGLPF[15:3]
0 to 4000h
N/A
*Note: The usable range for LONGHITH and LONGLOTH is limited to 16 mA. Setting a value >16 mA will disable threshold
detection.
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