- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄366551 > AM79C978AKCW (ADVANCED MICRO DEVICES INC) Single-Chip 1/10 Mbps PCI Home Networking Controller PDF資料下載
參數(shù)資料
| 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 |
| 文件頁數(shù)： | 25/256頁 |
| 文件大?。?/td> | 3505K |
| 代理商： | AM79C978AKCW |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當(dāng)前第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁第208頁第209頁第210頁第211頁第212頁第213頁第214頁第215頁第216頁第217頁第218頁第219頁第220頁第221頁第222頁第223頁第224頁第225頁第226頁第227頁第228頁第229頁第230頁第231頁第232頁第233頁第234頁第235頁第236頁第237頁第238頁第239頁第240頁第241頁第242頁第243頁第244頁第245頁第246頁第247頁第248頁第249頁第250頁第251頁第252頁第253頁第254頁第255頁第256頁
Am79C978A
25
EEDI
EEPROM Data In
This pin is designed to directly interface to a serial
EEPROM that uses the 93C46 EEPROM interface pro-
tocol. EEDI is connected to the EEPROM
’
s data input
pin. It is controlled by either the Am79C978A controller
during command portions of a read of the entire
EEPROM, or indirectly by the host system by writing to
BCR19, bit 0.
Output
Note:
The EEDI pin is multiplexed with the LED0 pin.
EEDO
EEPROM Data Out
This pin is designed to directly interface to a serial EE-
PROM that uses the 93C46 EEPROM interface proto-
col. EEDO is connected to the EEPROM
’
s data output
pin. It is controlled by either the Am79C978A control-
ler during command portions of a read of the entire
EEPROM, or indirectly by the host system by reading
from BCR19, bit 0.
Input
Note:
The EEDO pin is multiplexed with the LED3 pin.
EESK
EEPROM Serial Clock
This pin is designed to directly interface to a serial
EEPROM that uses the 93C46 EEPROM interface pro-
tocol. EESK is connected to the EEPROM
’
s clock pin.
It is controlled by either the Am79C978A controller di-
rectly during a read of the entire EEPROM, or indirectly
by the host system by writing to BCR19, bit 1.
Output
Note:
The EESK pin is multiplexed with the LED1 pin.
The EESK pin is also used during EEPROM Auto-
Detection to determine whether or not an EEPROM is
present at the Am79C978A controller interface. At the
rising edge of the last CLK edge while RST is asserted,
EESK is sampled to determine the value of the EEDET
bit in BCR19. A sampled HIGH value means that an
EEPROM is present, and EEDET will be set to 1. A
sampled LOW value means that an EEPROM is not
present, and EEDET will be set to 0. See the
EEPROM
Auto-Detection
section for more details.
If no LED circuit is to be attached to this pin, then a
pull-up or pull-down resistor must be attached instead
to resolve the EEDET setting.
WARNING
: The input signal level of EESK must be
valid for correct EEPROM detection before the
deassertion of RST.
MII Interface
RX_CLK
Receive Clock
RX_CLK is a clock input that provides the timing refer-
ence for the transfer of the RX_DV, RXD[3:0], and
Input
RX_ER signals into the Am79C978A device. RX_CLK
must provide a nibble rate clock (25% of the network
data rate). Hence, when the Am79C978A device is op-
erating at 10 Mbps, it provides an RX_CLK frequency
of 2.5 MHz, and at 100 Mbps it provides an RX_CLK
frequency of 25 MHz.
RXD[3:0]
Receive Data
RXD[3:0] is the nibble-wide MII-compatible receive
data bus. Data on RXD[3:0] is sampled on every rising
edge of RX_CLK while RX_DV is asserted. RXD[3:0] is
ignored while RX_DV is de-asserted.
RX_DV
Receive Data Valid
RX_DV is an input used to indicate that valid received
data is being presented on the RXD[3:0] pins and
RX_CLK is synchronous to the receive data. In order
for a frame to be fully received by the Am79C978A de-
vice, RX_DV must be asserted prior to the RX_CLK ris-
ing edge, when the first nibble of the Start of Frame
Delimiter is driven on RXD[3:0], and must remain as-
serted until after the rising edge of RX_CLK, when the
last nibble of the CRC is driven on RXD[3:0]. RX_DV
must then be deasserted prior to the RX_CLK rising
edge which follows this final nibble. RX_DV transitions
are synchronous to RX_CLK rising edges.
CRS
Receive Carrier Sense
CRS is an input that indicates that a non-idle me-
dium, due either to transmit or receive activity, has
been detected.
COL
Collision
COL is an input that indicates that a collision has been
detected on the network medium.
RX_ER
Receive Error
RX_ER is an input that indicates that the MII trans-
ceiver device has detected a coding error in the receive
data frame currently being transferred on the RXD[3:0]
pins. If RX_ER is asserted while RX_DV is asserted, a
CRC error will be indicated in the receive descriptor for
the incoming receive frame. RX_ER is ignored while
RX_DV is deasserted. Special code groups generated
on RXD while RX_DV is deasserted are ignored (e.g.,
bad SSD in TX and idle in T4). RX_ER transitions are
synchronous to RX_CLK.
Input
Input
Input
Input
Input
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) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。