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PC87417 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87417
Description  LPC ServerI/O for Servers and Workstations
Download  257 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87417 Datasheet(HTML) 4 Page - National Semiconductor (TI)

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Features (Continued)
www.national.com
4
Revision 1.2
s
Watchdog
— Watchdog counter reset by:
Serial Ports Interrupts
Keyboard and Mouse Interrupts
Software control
— 8-bit counter with 1 minute LSB
— Generates a 250 ms pulse at WDO pin
— Programmable SIOSMI or SIOSCI events
Clocking, Supply and Package Information
s
Strap Input Controlled Operating Modes
— Base Address (BADDR) for the PnP Index-Data
register pair
— Input clock presence (CKIN48) select
— X-Bus configuration (XCNF2-0) select (PC87413
and PC87417)
— ACCESS.bus
slave
address
(ACBSA)
select
(PC87416 and PC87417)
— TRI-STATE device pins (TRIS)
s
Clocks
— LPC clock input (up to 33 MHz)
— ServerI/O modules clock input: 48 MHz or no clock
— Single 32.768 KHz crystal
— On-chip low-frequency clock generator:
32.768 KHz for RTC, System Wake-Up Control
(SWC), Power Active timers and the high-fre-
quency clock generator
Very low power consumption
VBAT powered
— On-chip high-frequency clock generator:
Based on the 32.768 KHz clock
VSB powered
— Clock outputs:
LFCKOUT: 32.768 KHz or 1 Hz
HFCKOUT: 48 MHz or 40 MHz (or divided)
s
Protection
— All pins are 5V tolerant and back-drive protected
(except the LPC bus pins)
— Separate battery pin that includes an internal UL
protection resistor
— GPIO multiplexing configuration lock
s
Power Supply
— 3.3V supply operation
— Separate pins for main (VDD) and standby (VSB)
power supplies
— Backup battery input for RTC, SWC and Power
Active timers
— Reduced standby power consumption
— Very low power consumption for RTC and timers
(0.9
µA typical) from backup battery
s
Package
— 128-pin PQFP
Device-Specific Information
The following table shows the main features for each device in the PC8741x family.
Function1,2
1. This Datasheet contains notes that are device specific.
2. The “not implemented” functions must not be accessed by the host/controller, because correct
operation is not guaranteed.
PC87413
PC87414
PC87416
PC87417
LPC Bus Interface
YES
YES
YES
YES
X-Bus Extension
NO
NO
YES
YES
ACCESS.bus Interface
YES
NO
NO
YES
General-Purpose Input/Output Ports (GPIO)
YES
YES
YES
YES
Real Time Clock (RTC)
YES
YES
YES
YES
System Wake-Up Control (SWC)
YES
YES
YES
YES
Legacy Functional Blocks
YES
YES
YES
YES


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