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| 型號(hào)： | 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(yè)數(shù)： | 84/256頁(yè) |
| 文件大?。?/td> | 3505K |
| 代理商： | AM79C978AKCW |
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84
Am79C978A
BCR40
PCI DATA Register 3 (DATA3)
Alias Register
PCI DATA Register 4 (DATA4)
Alias Register
PCI DATA Register 5 (DATA5)
Alias Register
PCI DATA Register 6 (DATA6)
Alias Register
PCI DATA Register 7 (DATA7)
Alias Register
OnNow Pattern Matching
Register 1
OnNow Pattern Matching
Register 2
OnNow Pattern Matching
Register 3
LED4 Status
PHY Select
Physical Address Register 0
Physical Address Register 1
Physical Address Register 2
OnNow Miscellaneous
BCR41
BCR42
BCR43
BCR44
BCR45
BCR46
BCR47
BCR48
BCR49
CRS12
CRS13
CRS14
CSR116
If PREAD (BCR19, bit 14) and PVALID (BCR19, bit 15)
are cleared to 0, then the EEPROM read has experienced
a failure and the contents of the EEPROM programmable
BCR register will be set to default H_RESET values. The
content of the Address PROM locations, however, will not
be cleared.
EEPROM MAP
The automatic EEPROM read operation will access 41
words (i.e., 82 bytes) of the EEPROM. The format of the
EEPROM contents is shown in Table 19, beginning with
the byte that resides at the lowest EEPROM address.
CAUTION:
The first bit out of any word location in the
EEPROM is treated as the MSB of the register being
programmed. For example, the first bit out of EEPROM
word location 09h will be written into BCR4, bit 15; the
second bit out of EEPROM word location 09h will be
written into BCR4, bit 14, etc.
There are two checksum locations within the EEPROM.
The first checksum will be used by AMD driver software
to verify that the ISO 8802-3 (IEEE/ANSI 802.3) station
address has not been corrupted. The value of bytes 0Ch
and 0Dh should match the sum of bytes 00h through 0Bh
and 0Eh and 0Fh. The second checksum location (byte
51h) is not a checksum total, but is, instead, a checksum
adjustment. The value of this byte should be such that the
total checksum for the entire 82 bytes of EEPROM data
equals the value FFh. The checksum adjust byte is
needed by the controller in order to verify that the EE-
PROM content has not been corrupted.
LED Support
The controller can support up to five LEDs. LED outputs
LED0, LED1, LED2, LED3, and LED4 allow for direct con-
nection of an LED and its supporting pull-up device.
In applications that want to use the pin to drive an LED
and also have an EEPROM, it might be necessary to
buffer the LED3 circuit from the EEPROM connection.
When an LED circuit is directly connected to the EEDO/
LED3 pin, then it is not possible for most EEPROM de-
vices to sink enough I
OL
to maintain a valid low level on
the EEDO input to the controller. Use of buffering can be
avoided if a low power LED is used.
Each LED can be programmed through a BCR register
to indicate one or more of the following network status or
activities: Collision Status, Full-Duplex Link Status, Half-
Duplex Link Status, Receive Match, Receive Status,
Magic Packet, Disable Transceiver, Transmit Status,
Power, and Speed.
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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