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DM9016 датащи(PDF) 28 Page - Davicom Semiconductor, Inc.

номер детали DM9016
подробное описание детали  10/100 Mbps 3-port Ethernet Switch Controller with General Processor Interface
PDF  85 Pages
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производитель  DAVICOM [Davicom Semiconductor, Inc.]
домашняя страница  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9016 датащи(HTML) 28 Page - Davicom Semiconductor, Inc.

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DM9016
3-port switch with Processor Interface
28
Preliminary datasheet
DM9016-13-DS-P01
March 26, 2009
6.29 Processor Data Bus Driving Capability Register (38H)
Bit
Name
Default
Description
7
RESERVED
0,RW
Reserved
6:5
ISA_CURR
P01,RW
SD Bus Current Driving/Sinking Capability
00: 2mA
01: 4mA (default)
10: 6mA
11: 8mA
4:3
Reserved
P0,RW
Reserved
2
STEP
P0,RW
Data Bus Output stepping
1: disabled
0: enabled
1
IOW_SPIKE
P0,RW
Eliminate IOW spike
0: Disable
1: Eliminate about 2ns IOW spike
0
IOR_SPIKE
P1,RW
Eliminate IOR spike
0: Disable
1: Eliminate about 2ns IOR spike
6.30 IRQ Pin Control Register (39H)
Bit
Name
Default
Description
7:5
IRQ_DELAY
PS0,RW
IRQ Delayed Output Interval
This field determines the IRQ delayed output interval in multiples of 40
milliseconds(ms)
1
IRQ_TYPE
PET0,RW
IRQ Pin Output Type Control
1: IRQ open-collector output
0: IRQ direct output
0
IRQ_POL
PET0,RW
IRQ Pin Polarity Control
1: IRQ active low
0: IRQ active high
6.31 Port 2 Driving Capability Register (3AH)
Bit
Name
Default
Description
7
RESERVED
0,RO
Reserved
6:5
P2_CURR
P01,RW
Port 2 TXD/TXE Current Driving/Sinking Capability
00: 2mA
01: 4mA (default)
10: 6mA
11: 8mA
4:0
RESERVED
0,RW
Reserved
6.32 RX Control Register 2 (3CH)
Bit
Name
Default
Description
7:2
Reserved
PS0,RO
Reserved
1
DIS_BCAST
PH0,RW
Abort broadcast packet if its size > 256 bytes
0
NEXT_RX
PH0,RW
Jump to Next Start of Receiving Packet
Write 1 to launch and clear automatically after 10ns.



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