参数资料
型号: YMF754-R
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PQFP128
封装: 0.40 MM PITCH, LQFP-128
文件页数: 57/58页
文件大小: 301K
代理商: YMF754-R
YMF754
January 9, 2001
- 8 -
FUNCTION OVERVIEW
1. PCI INTERFACE
DS-1E supports the PCI bus interface and complies to PCI revision 2.2.
1-1. PCI Bus Command
DS-1E supports the following PCI Bus commands.
1-1-1. Target Device Mode
C/BE[3:0]#
Command
0
Interrupt Acknowledge (not support)
0
1
Special Cycle (not support)
0
1
0
I/O Read
0
1
I/O Write
0
1
0
reserved
0
1
0
1
reserved
0
1
0
Memory Read
0
1
Memory Write
1
0
reserved
1
0
1
reserved
1
0
1
0
Configuration Read
1
0
1
Configuration Write
1
0
Memory Read Multiple (alias to memory read)
1
0
1
Dual Address Cycle (not support)
1
0
Memory Read Line (alias to memory read)
1
Memory Write and Invalidate (alias to memory write)
DS-1E does not assert DEVSEL# when accessed with commands that are indicated as (not supported) or
reserved.
1-1-2. Master Device Mode
C/BE[3:0]#
Command
0
1
0
Memory Read
0
1
Memory Write
When DS-1E becomes a Master Device, it generates only memory write and read cycle commands.
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