參數(shù)資料
型號: AM79C970
廠商: Advanced Micro Devices, Inc.
英文描述: PCnetTM-PCI Single-Chip Ethernet Controller for PCI Local Bus
中文描述: PCnetTM - PCI單芯片以太網(wǎng)控制器的PCI總線
文件頁數(shù): 31/168頁
文件大小: 943K
代理商: AM79C970
AMD
P R E L I M I N A R Y
1-898
Am79C970
Preemption When
FRAME
is Asserted
The central arbiter can take
GNT
to the PCnet-PCI con-
troller away if the current bus operation takes too long.
This may happen e.g. when the PCnet-PCI controller
tries to fill the whole transmit FIFO and the target inserts
extra wait states for every data phase. When
GNT
is
taken away, the PCnet-PCI controller will finish the
current transfer and then immediately release the bus.
The Latency Timer in PCI configuration space of the
PCnet-PCI controller is always set to ZERO. The PCnet-
PCI controller will keep
REQ
asserted to regain bus
ownership as soon as possible.
18220C-13
FRAME
CLK
AD
IRDY
TRDY
C/
BE
DEVSEL
REQ
GNT
1
2
3
4
5
6
7
8
ADDR
DATA
DATA
DATA
0000
0111
9
PAR
PAR
PAR
PAR
PAR
DEVSEL
is sampled by the PCnet-PCI controller.
Figure 11. Preemption When
FRAME
is Asserted
相關(guān)PDF資料
PDF描述
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
AM79C972BKCW PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support
AM79C972BKIW PCnet⑩-FAST+ Enhanced 10/100 Mbps PCI Ethernet Controller with OnNow Support
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM79C970A 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
AM79C970AKC 制造商:AMD 制造商全稱: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