參數(shù)資料
型號: DSPCOMMANDUM
英文描述: Universal Command Converter for DSP User's Manual
中文描述: 通用命令轉換為數(shù)字信號處理器用戶手冊
文件頁數(shù): 37/70頁
文件大?。?/td> 550K
代理商: DSPCOMMANDUM
Host Computer Hardware
Motorola
Functional Description
3-5
Figure 3-3. Command Converter Block Diagram
3.1.4 Command Converter Handshake Signals
The DSP56002 on the command converter card is configured in such a way that bits 0–7
of its Port B are used for 8-bit data transfers, and bits 8–14 are used for data transfer
control.
There are three output control bits in the middle order byte of the DSP56002 Port B data
word. These bits are the ADM_INT, ADM_REQ, and ADM_ACK signals. ADM_REQ
and ADM_ACK, act as handshake lines for reading and writing data. ADM_INT acts as a
flag to indicate whether the ADM is requesting host computer service. These three control
bits are part of the host parallel control bus. They are enabled when the host computer
selects the ADM.
B
I
D
S
P
P
S
20MHZ
CLOCK
I
N
PLL
3
W
S
G
D
B
3
+5V
V
T
1
AA1947
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