dm9302 Davicom Semiconductor, Inc., dm9302 Datasheet - Page 12

• Manufacturer Part Number: dm9302
• Description: 10/100mbps Ethernet Fiber/twisted Pair Media Converter With Local Bus
• Manufacturer: Davicom Semiconductor, Inc.

5. PIN DESCRIPTION
5.1 Processor Bus interface
5.2 EEPROM Interfaces
12
I = Input, O = Output, I/O = Input / Output, O/D = Open Drain, P = Power, PD=internal pull-low (approx. 50K ohm)
17,18,19,20,21,22,24,25
# = asserted Low
5,6,7,9,10,12,14,15,
Pin No.
Pin No.
60
62
63
27
28
29
2
3
Pin Name
Pin Name
10/100Mbps Ethernet Fiber/Twisted Pair Media Converter with Local bus
SD0~15
EEDIO
IOW#
EECK
EECS
IOR#
CMD
CS#
IRQ
O,PD
O,PD
I,/O
I/O
I/O
I/O
O
I
I
I
I
Processor Read Command
Default is low active. The polarity can be changed by
setting EEPROM.
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.
Processor Data Bus bit 0~15
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
Processor Chip Select Command
Default is low active. Its polarity can be changed by
EEPROM setting.
Processor Write Command
Default is low active. Its polarity can be changed by
EEPROM setting.
EEPROM Data In/Out
EEPROM Serial Clock
This pin is used as the clock for the EEPROM data transfer.
EEPROM Chip Selection.
Description
Description
DM9302
Preliminary datasheet
DM9302-15-DS-P01
July 30, 2009