參數(shù)資料
型號(hào): MC68QH302
廠商: Motorola, Inc.
英文描述: 32-Bit Microprocessor(32位微處理器)
中文描述: 32位微處理器(32位微處理器)
文件頁數(shù): 15/50頁
文件大小: 6613K
代理商: MC68QH302
6
MC68QH302 Supplement to the MC68302 Users Manual
MOTOROLA
Table 3 shows the B2-parameter location depending on the activation status of the B2 and
D channels.
Table 4 shows the D-channel parameter locations depending on the activation status of the
B2 and D channels.
Table 5 shows the QH-mode channel parameter mapping. Note the two highlighted
swapping areas starting at offsets 0x500 and 0x680.
Table 3. B2-Channel Parameter Location
Status of B2
D Stopped
D Running
B2 stopped
0x500–0x52B
0x500–0x52B
B2 running
0x680–0x6AB
Indeterminate
Note:
The fixed-address parameters also need to be initialized.
Table 4. D-Channel Parameter Location
Status of B2
D Stopped
D Running
B2 stopped
0x680–0x6AB
0x680–0x6AB
B2 running
0x500–0x52B
Indeterminate
Table 5. QH Mode Parameter RAM Map
Base
1
Offset
Description
0x400–0x40F
B1-channel parameter RAM
0x410–0x47F
Buffer descriptors
0x480–0x4BF
B1-channel parameter RAM
0x4C0–0x4FF
Reserved—not implemented
0x500–0x52B
B2-channel parameter RAM (with B2 stopped)
D-channel parameter RAM (with B2 running)
0x52C–0x52F
Reserved—not implemented
0x530–0x56F
Buffer descriptors
0x570–0x57F
Buffer descriptors/DRAM refresh parameters
0x580–0x5AB
SCC2 parameter RAM
0x5AC–0x5FF
Reserved—not implemented
0x600–0x60F
B2-channel fixed-address parameter RAM
0x610–0x65F
Buffer descriptors
0x660–0x67F
(same as corresponding segment in Table 2)
0x680–0x6AB
D-channel parameter RAM (with B2 stopped)
B2-channel parameter RAM (with B2 running)
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