參數(shù)資料
型號: AM79C850KCW
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: SUPERNET-R 3
中文描述: 1 CHANNEL(S), 100M bps, FDDI CONTROLLER, PQFP208
封裝: PLASTIC, QFP-208
文件頁數(shù): 51/97頁
文件大?。?/td> 358K
代理商: AM79C850KCW
P R E L I M I N A R Y
AMD
51
SUPERNET 3
Command Register (AFCMD)
The command register is a 16-bit register that may be
read and written through the node processor interface.
Writing to this register causes the AF to perform the
commanded operation. All data necessary for an
operation must be set up in the appropriate registers
before the command being issued for an operation. This
register will be cleared (filled with zeroes) on a reset and
will retain its data after each time it is written until the
next reset.
LSB
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
19574A-19
INST(0)
INST(1)
INST(2)
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
Figure 18. Command Register
Reserved (bits 15:3)
Reserved
These bits are reserved for future use. These bits will
always read back as zeroes.
INST (bits 2:0)
Instruction
These bits are the encoded instructions to the AF. When
these bits are written, the AF is commanded to perform
the associated function. The encoding of the instruc-
tions is presented in the table below. These bits will read
back the last data that was written to this register.
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