Preliminary
32
Version: DM9161A-DS-P04
Jan.19, 2005
Bit
Bit Name
Default
Description
18.15
Reserved
0, RO
Reserved
Read as 0, ignore on write
18.14
LP_EN
1, RW
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
18.13
HBE
1,RW
Heartbeat Enable
1 = Heartbeat function enabled
0 = Heartbeat function disabled
When the DM9161A is configured for full duplex operation, this bit will
be ignored (the collision/heartbeat function is invalid in full duplex mode)
18.12
SQUELCH
1, RW
Squelch Enable
1 = Normal squelch
0 = Low squelch
18.11
JABEN
1, RW
Jabber Enable
Enables or disables the Jabber function when the DM9161A is in
10BASE-T full duplex or 10BASE-T transceiver loopback mode
1 = Jabber function enabled
0 = Jabber function disabled
18.10
10BT_SER
(#PIN
34),RW
10BASE-T GPSI Mode ( Default value depend on #pin34 strap
condition)
1 = 10BASE-T GPSI mode selected (#pin34 pull down)
0 = 10BASE-T MII mode selected (#pin34 pull up, default)
GPSI mode is not supported for 100Mbps operation
18.9-18.1
Reserved
0, RO
Reserved
Read as 0, ignore on write
18.0
POLR
0, RO
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) - 19
Bit
Bit Name
Default
Description
19.15-19.9
Reserved
0, RO
Reserved
Read as 0, ignore on write
19.8
PD10DRV
0, RW
Vendor powerdown control test
19.7
PD100DL
0, RW
Vendor powerdown control test
19.6
PDchip
0, RW
Vendor powerdown control test
19.5
PDcom
0, RW
Vendor powerdown control test
19.4
PDaeq
0, RW
Vendor powerdown control test
19.3
PDdrv
0, RW
Vendor powerdown control test
19.2
PDedi
0, RW
Vendor powerdown control test
19.1
PDedo
0, RW
Vendor powerdown control test
19.0
PD10
0, RW
Vendor powerdown control test
*
when selected , the powerdown value is control by Register 20.0
8.12 (Specified config) Register – 20
Bit
Bit Name
Default
Description
20.15
TSTSE1
0,RW
Vendor test select control
20.14
TSTSE2
0,RW
Vendor test select control
20.13
FORCE_TXSD
0,RW
Force Signal Detect
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