dm9302 Davicom Semiconductor, Inc., dm9302 Datasheet - Page 21

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

6.21 Receive Check Sum Control Status Register (32H)
6.22 uP Data Bus driving capability Register (38H)
6.23 IRQ Pin Control Register (39H)
Preliminary datasheet
DM9302-15-DS-P01
July 30, 2009
7:2
Bit
6:5
Bit
4:3
Bit
7
6
5
4
3
2
1
0
1
0
7
2
1
0
IRQ_TYPE
RESERVED
IRQ_POL
Reserved
ISA_CURR
IOW_SPIKE
RCSEN
IOR_SPIKE
Name
UDPS
UDPP
DCSE
Name
TCPS
TCPP
STEP
IPS
IPP
Name
Reserved
HPS0,RW
HPS0,RW
PET0,RW
PET0,RW
HP0,RO
HP0,RO
HP0,RO
HP0,RO
HP0,RO
HP0,RO
Default
PS0,RO
Default
P01,RW
Default
P0,RW
P0,RW
P0,RW
P1,RW
0,RW
10/100Mbps Ethernet Fiber/Twisted Pair Media Converter with Local bus
UDP Checksum Status
1: UDP packet checksum is fail.
0: UDP packet checksum is OK or it is not a UDP packet.
TCP Checksum Status
1: TCP packet checksum is fail.
0: TCP packet checksum is OK or it is not a TCP packet.
IP Checksum Status
1: IP packet checksum is ail
0: IP packet checksum is OK or it is not an IP packet.
This is an UDP Packet
This is a TCP Packet
This is an IP Packet
Receive Checksum Checking Enable
When set, the checksum status will store in packet first byte of status header.
Discard Checksum Error Packet
When set, IP/TCP/UDP checksum field is error, this packet will be discarded.
reserved
SD Bus Current Driving/Sinking Capability
00: 2mA
01: 4mA (default)
10: 6mA
11: 8mA
Reserved
Data Bus Output stepping
1: disabled
0: enabled
Eliminate IOW spike
1: eliminate about 2ns IOW spike
Eliminate IOR spike
1: eliminate about 2ns IOR spike
Reserved
IRQ Pin Output Type Control
1: IRQ Open-Collector output
0: IRQ direct output
IRQ Pin Polarity Control
1: IRQ active low
0: IRQ active high
Description
Description
Description
DM9302
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