DM9008 Ver la hoja de datos (PDF) - Davicom Semiconductor, Inc.
Número de pieza
componentes Descripción
Lista de partido
DM9008 Datasheet PDF : 68 Pages
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Pin Description
Pin No.
Symbol
PC ISA BUS INTERFACE PINS
96 - 99
3-5
7
9
11 - 13
15 - 18
20, 22
SA0 - SA3
SA4 - SA6
SA7
SA8
SA9 - SA11
SA14 - SA17
SA18, SA19
26 - 33
88 - 81
SD0 - SD7
SD8 - SD15
2
BALE
14
SYSCLK
19
IOR
21
IOW
23
SMEMR
35
RST
24
AEN
25
IOCHRDY
89
MEMW
90
MEMR
95
IO16
Final
Version: DM9008-DS-F02
November 30, 2000
I/O
I
I/O, Z
I
I
I
I
I
I
I
O I, Z
I
I
O, Z
DM9008
ISA/Plug & Play Super Ethernet Contoller
Description
SYSTEM ADDRESS: These signals are connected to the address
bus of the PC I/O slot. They are used to select the DM9008 I/O ports
or the boot ROM address
SYSTEM DATA: These signals are connected to the data bus of the
PC I/O bus slot. They are used to transfer data between the PC and
the DM9008
ADDRESS LATCH ENABLE: PC ISA bus BALE signal; used only to
define the timing of IOCHRDY in Remote DMA
This pin is not used if the value of bit4 of CRB is 0, and tie to high to
prevent floating.
SYSTEM CLOCK: PC ISA bus system clock
This pin is not used if the value of bit4 of CRB is 0, and tie to high to
prevent floating.
I/O READ: An active low signal used to read data from the DM9008
I/O WRITE: An active low signal used to write data to the DM9008
MEMORY READ: An active low signal used to read boot ROM data
RESET: An active high signal used to power-on reset the DM9008
ADDRESS ENABLE: This is an active low signal used to enable the
system address for the DM9008
I/O CHANNEL READY: The DM9008 sets this signal low to insert
wait states into the PC ISA bus
MEMORY WRITE: PC ISA bus memory write signal
This pin is not used if the value of bite4 of CRB is 0, and tie to high to
prevent floating.
MEMORY READ: PC ISA bus memory read signal
This pin is not used if the value of bit4 of CRB is 0, and tie to high to
prevent floating.
16-BIT I/O: This signal goes low when the data transfer between the
DM9008 and the PC ISA bus is word wide
5
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