参数资料
型号: PC87393F-VJG
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 外设及接口
英文描述: 100-Pin LPC SuperI/O Devices for Portable Applications
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封装: TQFP-100
文件页数: 22/148页
文件大小: 1733K
代理商: PC87393F-VJG
7.0 X-Bus Extension (Continued)
118
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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
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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