參數(shù)資料
型號(hào)： AM79C970A
廠(chǎng)商： Advanced Micro Devices, Inc.
英文描述： PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
中文描述： PCnet - 2的PCI單芯片全雙工以太網(wǎng)控制器，適用于PCI總線(xiàn)產(chǎn)品
文件頁(yè)數(shù)： 155/219頁(yè)
文件大小： 1065K
代理商： AM79C970A
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)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)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)當(dāng)前第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)
P R E L I M I N A R Y
AMD
155
Am79C970A
ble BCR locations will be reset to
their H_RESET values. The
contents of the Address PROM
locations, however, will not
be cleared.
If the EEPROM detection fails,
then all attempted PREAD
commands will terminate early
and PVALID will not be set. This
applies to the automatic read of
the EEPROM after H_RESET
as well as to host-initiated
PREAD commands.
Read accessible only. PVALID is
read only. Write operations have
no effect. PVALID is cleared to
ZERO during H_RESET and is
unaffected by S_RESET or by
setting the STOP bit.
14
PREAD
EEPROM Read command bit.
When this bit is set to ONE by the
host, the PVALID bit (BCR19, bit
15) will immediately be cleared to
ZERO and then the PCnet-PCI II
controller will perform a read op-
eration of 36 bytes from the
EEPROM through the Microwire
interface. The EEPROM data
that is fetched during the read
will be stored in the appropriate
internal registers on board
the PCnet-PCI II controller.
EEPROM contents will be indi-
rectly accessible to the host
through read accesses to the Ad-
dress PROM (offsets 0h through
Fh) and through read accesses
to the EEPROM-programmable
BCRs. Note that read accesses
from these locations will not actu-
ally access the EEPROM itself,
but instead will access the
PCnet-PCI II controller’s internal
copy of the EEPROM contents.
Write accesses to these loca-
tions may change the PCnet-PCI
II controller register contents, but
the EEPROM locations will not
be affected. EEPROM locations
may also be accessed directly
by programming bits 4–0 of
this register.
At the end of the read operation,
the PREAD bit will automatically
be
cleared
to
the PCnet-PCI II controller and
PVALID will be set, provided that
an EEPROM existed on the
Microwire interface pins and that
the checksum for the entire 36
bytes of EEPROM was correct.
ZERO
by
Note that when PREAD is set to
ONE, the PCnet-PCI II controller
will no longer respond to any ac-
cesses directed toward it, until
the
PREAD
completed successfully. The
PCnet-PCI II controller will termi-
nate these accesses with the
assertion of
DEVSEL
and
STOP
while
TRDY
is not asserted, sig-
naling to the initiator to discon-
nect and retry the access at a
later time.
operation
has
If a PREAD command is given to
the PCnet-PCI II controller but no
EEPROM is detected at the
Microwire interface pins, the
PREAD command will terminate
early, the PREAD bit will be
cleared to ZERO, the PVALID bit
will remain ZERO, and all
EEPROM-programmable BCR
locations will be reset to their
H_RESET values. The contents
of the Address PROM locations,
however, will not be cleared.
Read accessible always. Write
accessible only when either the
STOP or the SPND bit is set.
PREAD is cleared to ZERO dur-
ing H_RESET and is unaffected
by S_RESET or by setting the
STOP bit.
13
EEDET
EEPROM Detect. This bit indi-
cates the sampled value of the
EESK/
LED1
/SFBD pin at the ris-
ing edge of CLK during the last
clock during which
RST
is as-
serted. This value indicates
whether or not an EEPROM has
been detected at the EEPROM
interface. If this bit is a ONE, it in-
dicates that an EEPROM has
been detected. If this bit is a
ZERO, it indicates that an
EEPROM has not been detected.
Read accessible always. EEDET
is read only. Write operations
have no effect. It is unaffected by
S_RESET or by setting the
STOP bit.
The following table indicates the
possible combinations of EEDET
and
the
existence
EEPROM and the resulting op-
erations that are possible on the
EEPROM Microwire interface:
of
an
相關(guān)PDF資料
PDF描述
AM79C970AVCW PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
AM79C970 PCnetTM-PCI Single-Chip Ethernet Controller for PCI Local Bus
AM79C971VCW PCnet⑩-FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
AM79C971 PCnet⑩-FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
AM79C971KCW IC LOGIC 16211 24-BIT FET BUS SWITCH -40+85C TSSOP-56 35/TUBE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM79C970AKC 制造商:AMD 制造商全稱(chēng):Advanced Micro Devices 功能描述:PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
AM79C970AKC\\W 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Advanced Micro Devices 功能描述:
AM79C970AKC\W 制造商:Rochester Electronics LLC 功能描述:- Bulk
AM79C970AKCW 制造商:AMD 制造商全稱(chēng):Advanced Micro Devices 功能描述:PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*