參數(shù)資料
型號(hào)： AM79C961AKC
廠商： ADVANCED MICRO DEVICES INC
元件分類(lèi)： 微控制器/微處理器
英文描述： PCnet ⑩-ISA II Jumperless, Full Duplex Single-Chip Ethernet Controller for ISA
中文描述： 2 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP13
封裝： CARRIER RING, PLASTIC, QFP-132
文件頁(yè)數(shù)： 51/85頁(yè)
文件大?。?/td> 1088K
代理商： AM79C961AKC
Am79C961A
51
P R E L I M I N A R Y
Plug & Play Register Locations Detailed
Description (Refer to the Plug & Play
Register Map above).
IOAM[3:0]
I/O Address Match to bits [8:5] of SA
bus (PnP 0x60–0x61). Controls the
base address of PCnet-ISA II. The
IOAM will be written with a value
from the EEPROM.
IRQ[3:0]
IRQ selection on the ISA bus (PnP
0x70). Controls which interrupt will
be asserted. ISA Edge sensitive or
EISA level mode is controlled by
IRQ_TYPE bit in PnP 0x71. Default
is ISA Edge Sensitive. The IRQ sig-
nals will not be driven unless PnP
activate register bit is set.
IRQ Type
IRQ Type(PnP 0x71). Indicates the
type of interrupt setting; Level is 1,
Edge is 0.
IRQ_LVL
IRQ Level (PnP 0x71). A read-only
register bit that indicates the type of
setting, active high or low. Always
complement of IRQ_TYPE.
DMA[2:0]
DMA Channel Select (PnP 0x74).
Controls the DRQ and DMA selec-
tion of PCnet-ISA II. The DMA[2:0]
register will be written with a value
from the EEPROM. {For Bus Master
Mode Only} The DRQ signals will
not be driven unless Plug and Play
activate register bit is set.
BPAM[3:0]
Boot PROM Address Match to bits
[16:13] of SA bus (PnP 0x40–0x41).
Selects the location where the Boot
PROM Address match decode is
started. The BPAM will be written
with a value from the EEPROM.
BP_16B
Boot PROM 16-bit access (PnP
0x42). Is asserted if Boot PROM
cycles should respond as an 16-bit
device. In Bus Master mode, all boot
PROM cycles will only be 8 bits in
width.
BPSZ[3:0]
Boot PROM Size (PnP 0x43–0x44).
Selects the size of the boot PROM
selected.
SRAM[4:0]
Static RAM Address Match to bits
[17:13] of SA bus (PnP 0x48-0x49).
Selects the starting location of the
Shared Memory when using the
IOAM[3:0]
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Base Address (Hex)
200
220
240
260
280
2A0
2C0
2E0
300
320
340
360
380
3A0
3C0
3E0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
IRQ[3:0]
0
1
1
0
0
0
1
1
ISA IRQ Pin
IRQ3 (Default)
IRQ4
IRQ5
IRQ9
IRQ10
IRQ11
IRQ12
IRQ15
0
0
0
1
1
1
1
1
1
0
0
0
1
1
0
1
1
0
1
1
0
1
1
0
DMA[2:0]
1
0
1
1
0
DMA Channel (DRQ/DACK Pair)
Channel 3
Channel 5
Channel 6
Channel 7
No DMA Channel
0
1
1
1
1
1
1
0
1
0
BPAM[3:0]
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Address
Location (Hex)
C0000
C2000
C4000
C6000
C8000
CA000
CC000
CE000
D0000
D2000
D4000
D6000
D8000
DA000
DC000
DE000
Size Supported
(K bytes)
8, 16, 32, 64
8
8, 16
8
8, 16, 32
8
8, 16
8
8, 16, 32, 64
8
8, 16
8
8, 16, 32
8
8, 16
8
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
BPSZ[3:0]
x
1
1
1
0
Boot PROM Size
No Boot PROM Selected
8 K
16 K
32 K
64 K
0
1
1
1
1
x
1
1
0
0
x
1
0
0
0
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