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參數(shù)資料
| 型號(hào)： | FDC37B787QF |
| 廠商： | SMSC Corporation |
| 英文描述： | Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR |
| 中文描述： | 超級(jí)I / O與ACPI支持控制器，實(shí)時(shí)時(shí)鐘和消費(fèi)性紅外 |
| 文件頁(yè)數(shù)： | 136/249頁(yè) |
| 文件大?。?/td> | 932K |
| 代理商： | FDC37B787QF |
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RTC INTERFACE
The ISA interface is functionally compatible with
the 8042-style host interface. It consists of the D0-
7 data bus, the nIOR, nIOW and the Status
138
register, Input Data register, and Output Data
register. Table 61 shows how the interface
decodes the control signals. In addition to the
above signals, the host interface includes
keyboard and mouse IRQs.
Table 61 - ISA I/O Address Map
Addresses 0x60, 0x64, 0x70 and 0x71 are qualified by AEN
ISA ADDRESS*
BLOCK
0x70 (R/W)
RTC
0x71 (R/W)
RTC
Base*
RTC Bank 1 Address Register
Base* + 1
RTC Bank 1 Data Register
*Bank 0 is at 70h. Bank 1 is relocatable via the RTC Mode Register and the Secondary Base Address for
RTC Bank 1 (CR62 and CR63). See Configuration section.
RTC Address Register
Writing to this register sets the CMOS address
that will be read or written.
RTC Data Register
A read of this register will read the contents of the
selected CMOS register. A write to this register
will write to the selected CMOS register.
REAL TIME CLOCK
The Real Time Clock is a complete time of day
clock with a day of month alarm, calendar (up to
the year 9999), a programmable periodic interrupt,
and a programmable square wave generator.
Features
Counts seconds, minutes, and hours of the day.
Counts days of the week, date, month, year and
century.
Day of Month Wake-Up Alarm
Binary or BCD representation of time, calendar
and alarms.
Three interrupts - each is separately software
maskable. (No daylight savings time)
256 Bytes of CMOS RAM.
Port Definition and Description
FUNCTION
Address Register
Data Register
OSCILLATOR
Crystal Oscillator input
.
A 32.768 kHz crystal
connected externally on the XTAL1 and XTAL2
pins generates the 32.768 kHz RTC input clock.
Maximum clock frequency is 32.768 KHz.
RTC Reset
The clock, calendar, or RAM functions are not
affected by the system reset (RESET_DRV
active). When the RESET_DRV pin is active (i.e.,
system reset) and the battery voltage is above 1
volt nominal, the following occurs:
1) Periodic Interrupt Enable (PIE) is cleared to 0.
2) Alarm Interrupt Enable (AIE) bit is cleared to
0.
3) Update Ended Interrupt Enable (UIE) bit is
cleared to 0.
4) Update Ended Interrupt Flag (UF) bit is
cleared to 0.
5) Interrupt Request Status Flag (IRQF) bit is
cleared to 0.
6) Periodic Interrupt Flag (PIF) is cleared to 0.
7) The RTC and CMOS registers are not
accessible.
8) Alarm Interrupt Flag (AF) is cleared to 0.
9) nIRQ pin is in high impedance state.
When RESET_DRV is active and the battery
voltage is below 1-volt nominal, the following
occurs:
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FDC37B787QFP | 功能描述:輸入/輸出控制器接口集成電路 Enhanced Super I/O Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| FDC37B78X | 制造商:SMSC 制造商全稱(chēng):SMSC 功能描述:Enhanced Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR |
| FDC37B78X_07 | 制造商:SMSC 制造商全稱(chēng):SMSC 功能描述:Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR |
| FDC37B802 | 制造商:Rochester Electronics LLC 功能描述: |
| FDC37B802QFP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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