DM8203
2-port switch with MII / RMII Interface
8.10 10BASE-T Configuration/Status (10BTCSR) – 12H
Bit
Bit Name
Default
Description
15
Reserved
0, RO
Reserved
Read as 0, ignore on write
Link Pulse Enable
1 = Transmission of link pulses enabled
0 = Link pulses disabled, good link condition forced
This bit is valid only in 10Mbps operation
Heartbeat Enable
14
13
LP_EN
HBE
1, RW
1,RW
1 = Heartbeat function enabled
0 = Heartbeat function disabled
When the DM8203 is configured for full duplex operation, this bit will
be ignored (the collision/heartbeat function is invalid in full duplex
mode)
12
11
SQUELCH
JABEN
1, RW
1, RW
Squelch Enable
1 = Normal squelch
0 = Low squelch
Jabber Enable
Enables or disables the Jabber function when the DM8203 is in
10BASE-T full duplex or 10BASE-T transceiver Loopback mode
1 = Jabber function enabled
0 = Jabber function disabled
10
9-1
0
SERIAL
Reserved
POLR
0, RW
0, RO
0, RO
10Mbps Serial Mode (only valid in PHY test mode)
Force to 0, in application.
Reserved
Read as 0, ignore on write
Polarity Reversed
When this bit is set to 1, it indicates that the 10Mbps cable polarity is
reversed. This bit is automatically set and cleared by 10BASE-T
module
8.11 Power down Control Register (PWDOR) – 13H
Bit
Bit Name
Default
Description
15-9
Reserved
0, RO
Reserved
Read as 0, ignore on write
8
7
6
5
4
3
2
1
0
PD10DRV
PD100DL
PDchip
PDcrm
PDaeq
PDdrv
PDedi
PDedo
PD10
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
Vendor power down control test
Vendor power down control test
Vendor power down control test
Vendor power down control test
Vendor power down control test
Vendor power down control test
Vendor power down control test
Vendor power down control test
Vendor power down control test
* When selected, the power down value is control by Register 14H
40
Preliminary datasheet
DM8203-15-DS-P05
October 23, 2008
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
