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參數資料
型號: TPS65950ZXNT
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝: 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數: 61/167頁
文件大小: 2566K
代理商: TPS65950ZXNT
14
Debouncing Time
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
Table 14-1 lists the debouncing functions.
Table 14-1. Debouncing Time
Debouncing Functions
Block
Programmable
Debouncing Time
Default
Main battery charged threshold (<3.2 V)
Battery monitoring
No
580
s
580
s
Main battery low threshold detection (<2.7 V)
No
60
s
60
s
Main battery plug detection (with charger
No
60
s
60
s
connected)
BCI
Charger unplug detection(1)
No
1 x 50 ms
(automatic charge)
Charger plug detection(1)
BCI
No
9 x 50 ms
Debouncing functions interrupt generation
Power
No
125.6
s
125.6
s
debounce for charger plug
USB plug detection/VBUS precharge (same
BCI
No
9 x 50 ms
debouncing as charger plug) (1)
Battery presence plug/unplug(1)
BCI
No
9 x 50 ms
Battery thermistor in/out of range (1)
BCI
No
4 x 50 ms
0 to 250 ms
Plug/unplug detection VBUS(2)
USB
Yes
(32/32,468-second
28 ms
steps)
0 to 250 ms
Plug/unplug detection ID(3)
USB
Yes
(32/32,468-second
50 ms
steps)
Debouncing functions interrupt generation
Power
Yes
0 to 250 ms
30 ms
debounce for VBUS and ID(4)
Hot-die detection
Thermistor
No
60
s
60
s
Thermal shutdown detection
No
60
s
60
s
PWRON(5)
Start/stop button
No
31.25 ms
NRESWARM
Button reset
No
60
s
60
s
SIM card plug/unplug
GPIO
Yes
0 or 30 ms
± 1 ms
0 ms
Headset detection (plug/unplug)
GPIO
Yes
0 or 30 ms
± 1 ms
0 ms
MMC1/2 (plug/unplug)
GPIO
Yes
0 or 30 ms
± 1 ms
0 ms
(1)
According to the capture of the event, the debouncing time can vary between 50 ms and 50 ms + dT (dT included in 0 < dT > 50 ms).
Figure 14-1 shows and explains this possible variation of the debouncing time.
(2)
Programmable in the VBUS_DEBOUNCE register
(3)
Programmable in the ID_DEBOUNCE register
(4)
Programmable in the RESERVED_E[2:0] CFG_VBUSDEB register
(5)
The PWRON signal is debounced 1024
× CLK32K (maximum 1026 × CLK32K) falling edge in master mode.
Debouncing Time
153
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