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PC87364 Datasheet(PDF) 49 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87364
Description  128-Pin LPC SuperI/O with Extended Wake-Up and Protection Support
PDF  180 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87364 Datasheet(HTML) 49 Page - National Semiconductor (TI)

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2.0 Device Architecture and Configuration (Continued)
49
www.national.com
2.9.7
SuperI/O Configuration 6 Register (SIOCF6)
Write access to this register can be inhibited by either asserting XLOCK when it is selected on pin 53, or by setting bit 7 of
this register. Activation of each logical device (bits 0-4) is also affected by bit 0 of the logical device Activate register, index
30h and bit 0 of the SIOCF1 register.
Location:
Index 26h
Type:
R/W
2.9.8
SuperI/O Revision ID Register (SRID)
This register contains the identity number of the chip revision. SRID is incremented on each revision.
Location:
Index 27h
Type:
RO
Bit
76543210
Name
SIOCF6
Software
Lock
General-Purpose
Scratch
ACB
Disable
Serial Port 1
Disable
Serial Port 2
Disable
Parallel Port
Disable
FDC
Disable
Reset
00000000
Bit
Description
7
SIOCF6 Software Lock. Once this bit is set to 1 by software, it can be cleared only by hardware reset.
0: Write access to bits 0-6 of this register is controlled by XLOCK (default)
1: Bits 0-6 of this register are RO
6-5
General-Purpose Scratch
4
ACB Disable
0: Enabled (default)
1: Disabled
3
Serial Port 1 Disable
0: Enabled (default)
1: Disabled
2
Serial Port 2 Disable
0: Enabled (default)
1: Disabled
1
Parallel Port Disable
0: Enabled (default)
1: Disabled
0
FDC Disable
0: Enabled (default)
1: Disabled



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