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| 型號： | GA3222 |
| 廠商： | Gennum Corporation |
| 英文描述： | Advanta-TM ADRO-TM - Enabled DSP System |
| 中文描述： | 埃德瓦塔-商標化作-商標- DSP系統(tǒng)啟用 |
| 文件頁數(shù)： | 14/21頁 |
| 文件大小： | 291K |
| 代理商： | GA3222 |
GA3222 Preliminary Data Sheet
34477 - 0
February 2006
14 of 21
7.8.4 Static Switch on MS, Static Switch on MS2 (jump to last memory)
This mode uses two static switches to change memories. Unlike in the previous
example, this mode switches to the memory D when the static switch on MS2 is
HIGH. This means that this mode uses a maximum of three memories (even if four
valid memories are programmed).
Table 7-2
describes which memory is selected
depending on the state of the switches.
In this mode it is possible to jump from any memory to any other memory simply by
changing the state of both switches. If both switches are changed simultaneously
then the transition is smooth, otherwise, if one switch is changed and then the
other, the part transitions to an intermediate memory before reaching the final
memory.
When MS2 is set HIGH, the state of the switch on MS is ignored. This prevents
memory select beeps from occurring when switching MS when MS2 is HIGH.
The part starts in whatever memory the switches are selected. If a memory is
invalid, the part defaults to memory A.
If required, a memory other than D can be used as the jump memory (including one
accessible via MS).
Table 7-1: Memory selected in Static Switch on MS and MS2 mode
MS
MS2
Memory
OPEN
OPEN
A
HIGH
OPEN
B (if valid, otherwise A)
OPEN
HIGH
C (if valid, otherwise A)
HIGH
HIGH
D (if valid, otherwise A)
Table 7-2: Memory selected in Static Switch on MS, Static Switch on MS2
(jump to last memory) mode
MS
MS2
Memory
OPEN
OPEN
A
HIGH
OPEN
B (if valid, otherwise A)
OPEN
HIGH
D
HIGH
HIGH
D
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