DM9620 DAVICOM [Davicom Semiconductor, Inc.], DM9620 Datasheet - Page 25

• Manufacturer Part Number: DM9620
• Description: USB2.0 to 10/100M Fast Ethernet Controller
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

4.24 Receive Check Sum Control Status Register (32H)
4.25 External PHYceiver Address Register (33H)
4.26 General Purpose Control Register 2 (34H)
4.27 General Purpose Register 2 (35H)
Preliminary
Version: DM9620 -15-DS-P02
February 20, 2012
6~5
4~0
7~0
7~0
Bit
Bit
Bit
Bit
7
6
5
4
3
2
1
0
7
EPHYADR
Reserved
ADR_EN
RCSEN
Name
UDPS
UDPP
DCSE
Name
Name
GPC2
Name
GPD2
TCPS
TCPP
IPS
IPP
HPS01,RW
HPS0,RW
HPS0,RW
HPS0,RW
HPS0,RO
HPS0,RO
HPS0,RO
HPS0,RO
HPS0,RO
HPS0,RO
HPS0,RO
HP0,RW
HP0,RW
Default
Default
Default
Default
UDP Checksum Status
0: UDP packet checksum OK, or this is not UDP packet
1: UDP packet checksum error
TCP Checksum Status
0: TCP packet checksum OK, or this is not TCP packet
1: TCP packet checksum error
IP Checksum Status
0: IP packet checksum OK, this is not IP packet
1: IP packet checksum error
UDP Packet
TCP Packet
IP Packet
Receive Checksum Checking Enable
When set, the checksum status will store in packet first byte of status header
in RX DM9620 mode.
Discard Checksum Error Packet
When set, if IP/TCP/UDP checksum field is error, this packet will be
discarded.
External PHY Address Enabled
When set in external MII mode, the external PHYceiver address is defined at
bit 4~0.
Reserved
External PHY Address Bit 4~0
The PHY address in external MII mode.
General Purpose Control 2
Define the input mode (“0”,) or output mode (“1”) of pins GP_GRP2.
Where the GP_GRP2 are pins GPIO2 listed in pin description
General Purpose Register 2 Data
When the correspondent bit of General Purpose Control Register 2 is set, i.e.
output mode, the value of the bit is reflected to pins GP_GPR2
When the correspondent bit of General Purpose Control Register 2 is 0, i.e.
input mode, the value of the bit to be read is reflected from correspondent pins
GP_GPR2
Description
Description
Description
Description
USB2.0 to Fast Ethernet Controller
DM9620
25