- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄366550 > AM79C972BKCW (ADVANCED MICRO DEVICES INC) PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support PDF資料下載
參數(shù)資料
| 型號(hào)： | AM79C972BKCW |
| 廠(chǎng)商： | ADVANCED MICRO DEVICES INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support |
| 中文描述： | 5 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP16 |
| 封裝： | PLASTIC, QFP-160 |
| 文件頁(yè)數(shù)： | 20/130頁(yè) |
| 文件大?。?/td> | 1580K |
| 代理商： | AM79C972BKCW |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)當(dāng)前第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)
20
Am79C972
be used to drive external logic that switches the device
power source from the main power supply to an auxil-
iary power supply.
TBC_EN
Time Base Clock Enable
TBC_EN is an input that controls the selection of the
source of the Time Base Clock. The Time Base Clock
is used in loading the EEPROM, generation of the
PHY_RST, and the timing of the MDC and MDIO sig-
nals. When the input to this pin is LOW, an internal free
running oscillator with a maximum frequency of 20
MHz is used. When the input to this pin is HIGH, the
TBC_IN pin input is used to inject externally generated
clock into the device. For typical applications which will
use the internal oscillation, this pin should be tied to
ground.
Input
When RST is active, TBC_EN is an input for NAND tree
testing.
TBC_IN
Time Base Clock Input
TBC_IN may be used to connect to an external clock
source to drive the internal circuitry that loads the
EEPROM and controls the MDC and MDIO signals.
This input is selected when the TBC_EN pin is HIGH.
This pin should be tied to ground when the TBC_EN pin
is LOW.
PHY_RST
PHY Reset
PHY_RST is an output pin that is used to reset the ex-
ternal PHY. This output eliminates the need for a fan
out buffer for the PCI RST signal, provides polarity for
the specific PHY used, and prevents the resetting of
the PHY when the PG input is LOW. The output polarity
is determined by the RST_POL bit(CSR116, bit0).
EEPROM Interface
EECS
EEPROM Chip Select
This pin is designed to directly interface to a serial EE-
PROM that uses the 93C46 EEPROM interface proto-
col. EECS is connected to the EEPROM
’
s chip select
pin. It is controlled by either the Am79C972 controller
during command portions of a read of the entire EE-
PROM, or indirectly by the host system by writing to
BCR19, bit 2.
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 Am79C972 controller
Input
Output
Output
Output
during command portions of a read of the entire
EEPROM, or indirectly by the host system by writing to
BCR19, bit 0.
Note:
The EEDI pin is multiplexed with the LED0 pin.
EEDO
EEPROM Data Out
This pin is designed to directly interface to a serial
EEPROM that uses the 93C46 EEPROM interface pro-
tocol. EEDO is connected to the EEPROM
’
s data out-
put pin. It is controlled by either the Am79C972
controller during command portions of a read of the en-
tire EEPROM, or indirectly by the host system by read-
ing from BCR19, bit 0.
Input
Note:
The EEDO pin is multiplexed with the LED3,
MIIRXFRTGD, and SRD pins.
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 Am79C972 controller di-
rectly during a read of the entire EEPROM, or indirectly
by the host system by writing to BCR19, bit 1.
Input/Output
Note:
The EESK pin is multiplexed with the LED1 and
SFBD pins.
The EESK pin is also used during EEPROM Auto-
Detection to determine whether or not an EEPROM is
present at the Am79C972 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 re-
solve the EEDET setting.
WARNING: The input signal level of EESK must be
valid for correct EEPROM detection before the
deassertion of RST.
Expansion Bus Interface
EBUA_EBA[7:0]
Expansion Bus Upper Address/
Expansion Bus Address [7:0]
The EBUA_EBA[7:0] pins provide the least and most
significant bytes of address on the Expansion Bus. The
most significant address byte (address bits [19:16] dur-
ing boot device accesses) is valid on these pins at the
beginning of a boot device access, at the rising edge of
AS_EBOE. This upper address byte must be stored ex-
Output
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C972BKIW | PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support |
| AM79C972BVCW | PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support |
| AM79C972 | PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support |
| AM79C972BVIW | PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support |
| AM79C974 | PCnetTM-SCSI Combination Ethernet and SCSI Controller for PCI Systems |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C972BKD/W | 制造商:Advanced Micro Devices 功能描述: |
| AM79C972BKD\\W | 制造商:Advanced Micro Devices 功能描述: |
| AM79C972BKD\W | 制造商:Advanced Micro Devices 功能描述: |
| AM79C972BKIW | 制造商:AMD 制造商全稱(chēng):Advanced Micro Devices 功能描述:PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support |
| AM79C972BVC | 制造商:Advanced Micro Devices 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。