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參數(shù)資料
| 型號： | AM79C978AKCW |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Single-Chip 1/10 Mbps PCI Home Networking Controller |
| 中文描述： | 5 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP160 |
| 封裝： | PLASTIC, QFP-160 |
| 文件頁數(shù)： | 117/256頁 |
| 文件大?。?/td> | 3505K |
| 代理商： | AM79C978AKCW |
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Am79C978A
117
means that the software can read CSR5 and write back
the value just read to clear the interrupt condition.
Bit
Name
Description
31-16
RES
Reserved locations. Written as
zeros and read as undefined.
15
TOKINTD
Transmit OK Interrupt Disable. If
TOKINTD is set to 1, the TINT bit
in CSR0 will not be set when a
transmission was successful.
Only a transmit error will set the
TINT bit.
TOKINTD has no effect when
LTINTEN (CSR5, bit 14) is set to
1. A transmit descriptor with
LTINT set to 1 will always cause
TINT to be set to 1, independent
of the success of the transmis-
sion.
This bit is always read/write ac-
cessible. TOKINTD is cleared by
H_RESET or S_RESET and is
unaffected by STOP.
14
LTINTEN
Last Transmit Interrupt Enable.
When set to 1, the LTINTEN bit
will cause the Am79C978A con-
troller to read bit 28 of TMD1 as
LTINT. The setting LTINT will de-
termine if TINT will be set at the
end of the transmission.
This bit is always read/write ac-
cessible. LTINTEN is cleared by
H_RESET or S_RESET and is
unaffected by STOP.
13-12
RES
Reserved locations. Written as
zeros and read as undefined.
11
SINT
System Interrupt is set by the
Am79C978A controller when it
detects a system error during a
bus master transfer on the PCI
bus. System errors are data pari-
ty error, master abort, or a target
abort. The setting of SINT due to
data parity error is not dependent
on the setting of PERREN (PCI
Command register, bit 6).
When SINT is set, INTA is assert-
ed if the enable bit SINTE is 1.
Note that the assertion of an in-
terrupt due to SINT is not depen-
dent on the state of the INEA bit,
since INEA is cleared by the
STOP reset generated by the
system error.
This bit is always read/write ac-
cessible. SINT is cleared by the
host by writing a 1. Writing a 0
has no effect. The state of SINT is
not affected by clearing any of the
PCI Status register bits that get
set when a data parity error
(DATAPERR, bit 8), master abort
(RMABORT, bit 13), or target
abort (RTABORT, bit 12) occurs.
SINT is cleared by H_RESET or
S_RESET and is not affected by
setting the STOP bit.
10
SINTE
System
SINTE is set, the SINT bit will be
able to set the INTR bit.
Interrupt
Enable.
If
This bit is always read/write ac-
cessible. SINTE is set to 0 by
H_RESET or S_RESET and is
not affected by setting the STOP
bit.
9-8
RES
Reserved locations. Written as
zeros and read as undefined.
7
EXDINT
Excessive Deferral Interrupt is set
by the Am79C978A controller when
the transmitter has experienced Ex-
cessive Deferral on a transmit
frame, where Excessive Deferral is
defined in the ISO 8802-3 (IEEE/
ANSI 802.3) standard.
When EXDINT is set, INTA is as-
serted if the enable bit EXDINTE
is 1.
This bit is always read/write ac-
cessible. EXDINT is cleared by
the host by writing a 1. Writing a
0 has no effect. EXDINT is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
6
EXDINTE
Excessive Deferral Interrupt En-
able. If EXDINTE is set, the
EXDINT bit will be able to set the
INTR bit.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C978AVCW | Single-Chip 1/10 Mbps PCI Home Networking Controller |
| AM79C978 | Single-Chip 1/10 Mbps PCI Home Networking Controller |
| AM79C981 | Integrated Multiport Repeater Plus⑩ (IMR+⑩) |
| AM79C981JC | Integrated Multiport Repeater Plus⑩ (IMR+⑩) |
| AM79C982 | basic Integrated Multiport Repeater (bIMR) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C978AVCW | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Single-Chip 1/10 Mbps PCI Home Networking Controller |
| AM79C978KC/W | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Single-Chip 1/10 Mbps PCI Home Networking Controller |
| AM79C978VC/W | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Single-Chip 1/10 Mbps PCI Home Networking Controller |
| AM79C979BKC\\W | 制造商:Advanced Micro Devices 功能描述: |
| AM79C98 | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Twisted-Pair Ethernet Transceiver (TPEX) |
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