參數(shù)資料
型號： AM79C930VCW
廠商： ADVANCED MICRO DEVICES INC
元件分類： 微控制器/微處理器
英文描述： PCnet-Mobile Single-Chip Wireless LAN Media Access Controller
中文描述： 2 CHANNEL(S), LOCAL AREA NETWORK CONTROLLER, PQFP144
封裝： TQFP-144
文件頁數(shù)： 37/161頁
文件大?。?/td> 691K
代理商： AM79C930VCW
P R E L I M I N A R Y
AMD
37
Am79C930
ENXCHBSY bit of TCR28 and the CHBSYU bit of
TIR5 and operates independently of the bits in the
table below.
In addition to the functionality listed above, the
USER5/IRQ4/EXTCHBSY pin may be used as the
source for CCA information, instead of relying on the in-
ternal CCA logic of the Am79C930 device. When using
the external CCA information, CCA information from the
internal logic will be unavailable. External CCA informa-
tion will appear in the same register bit locations as in-
ternal CCA information, when enabled, so a change
from internal source to external source will be transpar-
ent to firmware (excepting the necessary change in the
ENXCHBSY bit value).
This source of CCA information is controlled by the
ENXCHBSY bit of TCR28. When the ENXCHBSY bit of
TCR28 is set to a 1, then the value of the
USER5/IRQ4/EXTCHBSY pin will be fed directly to the
CHBSYC bit of TIR4, CHBSY bit of TIR26 and the BCF
bit of TIR5. If the CHBSYC interrupt is unmasked, it will
produce an interrupt to the 80188 embedded controller.
If the BCF interrupt is unmasked, it will produce an inter-
rupt to the 80188 embedded controller. Note that setting
the ENXCHBSY bit of TCR28 to a 1 will cause the
USER5/IRQ4/EXTCHBYS pin to function as an input,
regardless of the settings of the other control
bits listed.
USER5/
IRQ4
Direction
USER5/
IRQ4
Pin Data
PCMCIA
Pin
ENXCHBSY
TCR28[5]
USER5FN
TCR7[5]
USER5EN
TCR15[2]
IRQ Select
PnPx70
IRQ Type
PnPx71
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
1
0
0
X
0
0
0
0
1
1
X
X
X
X
X
X
0
1
0
1
X
0
1
X
4h
4h
≠
4h
≠
4h
X
X
X
X
X
X
2h
1h
X
X
X
X
X
X
X
I
TIR11[5]
IRQ4
IRQ4
TIR11[5]
TIR11[5]
TIR11[5]
TIR11[5]
TIR11[5]
TIR11[5]
TIR11[5]
O
OD
I
O
I
O
I
I
O
Pin 98:
ACT
The
ACT
pin may be configured for input or output op-
eration. The output drive may be programmed for totem
pole or open drain operation.
ACT
pin configuration is
accomplished according to the following table:
Note that a read of the ACT bit (TIR0[6]) will always
give the current
ACT
pin value, regardless of pin
configuration setting.
ACTEN
TCR15[1]
0
1
1
1
1
ACT
TIR0[6]
X
0
1
0
1
ACTDR
TCR27[3]
X
0
0
1
1
ACT Pin
Direction
I
OD
OD
O
O
ACT Pin
Value
NA
float
LOW
HIGH
LOW
reset default condition
Pin 100:
LNK
The
LNK
pin may be configured for input or output op-
eration. The output drive may be programmed for totem
pole or open drain operation.
LNK
pin configuration is
accomplished according to the following table:
Note that a read of the LNK bit (TIR0[7]) will always
give the current
LNK
pin value, regardless of pin
configuration setting.
LNKEN
TCR13[7]
0
1
1
1
1
LNK
TIR0[7]
X
0
1
0
1
LNKDR
TCR27[4]
X
0
0
1
1
LNK
Pin
Direction
I
OD
OD
O
O
LNK
Pin
Value
NA
float
LOW
HIGH
LOW
reset default condition
相關PDF資料
PDF描述
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相關代理商/技術參數(shù)
參數(shù)描述
AM79C940 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Media Access Controller for Ethernet (MACE)
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AM79C940-16/25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
AM79C940-16JC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller
AM79C940-25JC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller
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