參數(shù)資料
型號： AM79C972BVIW
廠商： ADVANCED MICRO DEVICES INC
元件分類： 微控制器/微處理器
英文描述： PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support
中文描述： 5 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP176
封裝： TQFP-176
文件頁數(shù)： 94/130頁
文件大?。?/td> 1580K
代理商： AM79C972BVIW
94
Am79C972
Table 20.
Legal I/O Accesses in Double Word I/O
Mode (DWIO =1)
Table 18.
Legal I/O Accesses in Word I/O Mode (DWIO = 0)
AD[4:0]
0XX00
0XX01
0XX10
0XX11
BE[3:0]
1110
1101
1011
0111
Type
RD
RD
RD
RD
Comment
Byte read of APROM location 0h, 4h, 8h or Ch
Byte read of APROM location 1h, 5h, 9h or Dh
Byte read of APROM location 2h, 6h, Ah or Eh
Byte read of APROM location 3h, 7h, Bh or Fh
Word read of APROM locations 1h (MSB) and 0h (LSB), 5h and 4h, 8h and 9h or
Ch and Dh
Word read of APROM locations 3h (MSB) and 2h (LSB), 7h and 6h, Bh and Ah or
Fh and Eh
Word read of RDP
Word read of RAP
Word read of Reset Register
Word read of BDP
Word write to APROM locations 1h (MSB) and 0h (LSB), 5h and 4h, 8h and 9h or
Ch and Dh
Word write to APROM locations 3h (MSB) and 2h (LSB), 7h and 6h, Bh and Ah or
Fh and Eh
Word write to RDP
Word write to RAP
Word write to Reset Register
Word write to BDP
DWord write to RDP,
switches device to DWord I/O mode
0XX00
1100
RD
0XX10
0011
RD
10000
10010
10100
10110
1100
0011
1100
0011
RD
RD
RD
RD
0XX00
1100
WR
0XX10
0011
WR
10000
10010
10100
10110
1100
0011
1100
0011
WR
WR
WR
WR
10000
0000
WR
Table 19.
Offset
00h - 0Fh
10h
I/O Map In DWord I/O Mode (DWIO = 1)
No. of Bytes
16
4
RAP (shared by RDP and
Register
APROM
RDP
14h
4
BDP)
18h
1Ch
4
4
Reset Register
BDP
AD[4:0]
BE[3:0]
Type
Comment
0XX00
0000
RD
DWord read of APROM
locations 3h (MSB) to 0h
(LSB),
7h to 4h, Bh to 8h or Fh to
Ch
DWord read of RDP
DWord read of RAP
DWord read of Reset
Register
DWord write to APROM
locations 3h (MSB) to 0h
(LSB),
7h to 4h, Bh to 8h or Fh to
Ch
DWord write to RDP
DWord write to RAP
DWord write to Reset
Register
10000
10100
0000
0000
RD
RD
11000
0000
RD
0XX00
0000
WR
10000
10100
0000
0000
WR
WR
11000
0000
WR
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