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PC87393 Datasheet(PDF) 118 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87393
Description  100-Pin LPC SuperI/O Devices for Portable Applications
PDF  148 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87393 Datasheet(HTML) 118 Page - National Semiconductor (TI)

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7.0 X-Bus Extension (Continued)
118
www.national.com
7.4.8
X-Bus Indirect Memory Address Register 2 (XIMA2)
This register describes the addresses 23-16 for read or write transaction to the memory.
Location:
Offset 0Ah
Type:
R/W
7.4.9
X-Bus Indirect Memory Address Register 3 (XIMA3)
This register describes the addresses 31-24 for read or write transaction to the memory.
Location:
Offset 0Bh
Type:
R/W
7.4.10
X-Bus Indirect Memory Data Register (XIMD)
This register describes data bits 7-0 for read or write transaction to the memory.
Location:
Offset 0Ch
Type:
R/W
7.5
USAGE HINTS
1. To use the PC8739x with the National Semiconductor PC87570 Keyboard and Power Management Controller, connect
the X-Bus as follows:
PC8739x
PC87570
Signals
Signals
XRD
HMEMRD
XWR
HMEMWR
XIORD
HIOR
XIOWR
HIOW
XD7-0
HD7-0
Bit
76543210
Name
X-Bus Indirect Memory Address 23-16
Reset
00000000
Bit
Description
7-0
X-Bus Indirect Memory Address 23-16
Bit
76543210
Name
X-Bus Indirect Memory Address 31-24
Reset
00000000
Bit
Description
7-0
X-Bus Indirect Memory Address 31-24
Bit
76543210
Name
X-Bus Indirect Memory Data 7-0
Reset
00000000
Bit
Description
7-0
X-Bus Indirect Memory Data 7-0



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