參數(shù)資料
型號: AM79C974KCW
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: PCnetTM-SCSI Combination Ethernet and SCSI Controller for PCI Systems
中文描述: 2 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP132
封裝: PLASTIC, QFP-132
文件頁數(shù): 30/153頁
文件大小: 838K
代理商: AM79C974KCW
AMD
P R E L I M I N A R Y
30
Am79C974
Slave I/O Write
The Slave I/O Write command is used by the host CPU
to write to the Am79C974’s CSRs, BCRs and EEPROM
locations and SCSI and CCB registers. It is a single cy-
cle, non-burst 8-bit, 16–bit, or 32-bit transfer which is
initiated by the host CPU. The typical number of wait
states added to a slave I/O write access on the part of
the Am79C974 controller is 6 to 7 clock cycles. The
Am79C974 controller will not produce Slave I/O write
commands while being a bus master.
18681A-8
FRAME
CLK
AD
IRDY
TRDY
C/
BE
1
2
3
4
5
6
7
8
ADDR
DATA
0011
BE
's
9
10
11
PAR
PAR
PAR
STOP
DEVSEL
Figure 4.
Slave I/O Write
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