DM9161B
10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver
31 Final
Version: DM9161B-12-DS-F01
January 31, 2008
8.10 10BASE-T Configuration/Status (10BTCSR) - 18
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 DM9161B 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 DM9161B 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 power down control test
19.7 PD100DL 0, RW Vendor power down control test
19.6 PDchip 0, RW Vendor power down control test
19.5 PDcom 0, RW Vendor power down control test
19.4 PDaeq 0, RW Vendor power down control test
19.3 PDdrv 0, RW Vendor power down control test
19.2 PDedi 0, RW Vendor power down control test
19.1 PDedo 0, RW Vendor power down control test
19.0 PD10 0, RW Vendor power down control test
* When selected, the power down value is control by Register 20.0
