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參數(shù)資料
| 型號： | NT6881 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | USB Keyboard Micro-Controller |
| 中文描述： | USB鍵盤微控制器 |
| 文件頁數(shù)： | 13/23頁 |
| 文件大?。?/td> | 785K |
| 代理商： | NT6881 |
NT6881
13
15. Reset Source Summary
These are 5 reset sources in NT6881 as shown below.
No.
Type
Function
Description
1
Cold
External Pin (
RESET
)
Applied Externally
2
Cold
Power-on Reset
Reset after Power-on
3
Cold
USB Reset Signaling
10 ms Reset Period
4
Warm-1
Resume Reset
USB Reset Period
5
Warm-2
Watch-dog Reset
Reset every 0.15S (OSC = 6MHz)
NT6881 can also be reset externally through the
RESET
pin. A reset is initialed when the signal at the
RESET
pin is held
Low for at least 10 system clocks. When
RESET
signal goes high, the NT6881 begins to work. The following shows the
definition of
RESET
input low pulse width.
V
DD
20%V
DD
20%V
DD
V
DD
Trstb
16. PS/2 Mouse Application
A PS/2 mouse interface is implemented in P32 (CLK), P33 (DATA) and P34 (Power Control). The timing diagrams are
described as follows.
CLK
DAT A
T1
T3
T4
1st
CLK
2nd
CLK
Start Bit
T1A
T2
11th
CLK
10th
CLK
T5
Parity Bit
Stop Bit
Bit 0
Auxiliary Devic e S ending Data T imings
Timing
Description
MIN/MAX
T1
T1A
T2
T3
T4
Time from DATA transaction to falling edge of CLK 1
Time from DATA transaction to falling edge of CLK 2-11
Time from rising edge of CLK to DATA transaction
Duration of CLK inactive (LOW)
Duration of CLK active (HIGH)
Time to Auxiliary Device inhibit after clock 11 to ensure the Auxiliary Device
does not start another transmission
5/25
u
s
5/25
u
s
5/T4-5
u
s
30/50
u
s
30-50
u
s
T5
>0/50
u
s
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相關代理商/技術參數(shù) |
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|---|---|
| NT68F62 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller for Monitor (32K Flash MTP Type) |
| NT68F62U | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller for Monitor (32K Flash MTP Type) |
| NT68P61A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller for Monitor (24K OTP ROM Type) |
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| NT6DM32M16AD-T1 | 制造商:Nanya Technology Corporation 功能描述:MOBILE DRAM |
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