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DM9006EP датащи(PDF) 13 Page - Davicom Semiconductor, Inc.

номер детали DM9006EP
подробное описание детали  10/100 Mbps 2-port Ethernet Switch Controller with General Processor Interface
PDF  76 Pages
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производитель  DAVICOM [Davicom Semiconductor, Inc.]
домашняя страница  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9006EP датащи(HTML) 13 Page - Davicom Semiconductor, Inc.

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DM9006
2-port Switch with Processor Interface
Preliminary datasheet
13
DM9006-13-DS-P01
September 1, 2009
5. PIN DESCRIPTION
I = Input, O = Output, I/O = Input / Output, O/D = Open Drain, P = Power, PD=internal pull-low (approx. 50K ohm)
# = asserted Low
5.1 Processor Bus interface
Pin No.
Pin Name
I/O
Description
2
IOR#
I
Processor Read Command
Default is low active. The polarity can be changed by
setting EEPROM.
3
IRQ
O
Interrupt Request
Default is high active and non-open collector type. Its
polarity and output type can be changed by strap pins
or EEPROM setting.
5,6,7,9,10,12,14,15,
17,18,19,20,21,22,24,25
SD0~15
I/O
Processor Data Bus bit 0~15
60
CMD
I
Command Type
Upon the IO transaction,
when CMD is high, SD0~15 reflect the value of DATA port
when CMD is low, SD0~15 reflect the value of INDEX port
62
CS#
I
Processor Chip Select Command
Default is low active. Its polarity can be changed by
EEPROM setting.
63
IOW#
I
Processor Write Command
Default is low active. Its polarity can be changed by
EEPROM setting.
5.2 EEPROM Interfaces
Pin No.
Pin Name
I/O
Description
27
EEDIO
I,/O
EEPROM Data In/Out
28
EECK
O,PD
EEPROM Serial Clock
This pin is used as the clock for the EEPROM data transfer.
29
EECS
O,PD
EEPROM Chip Selection.



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