DM9620 DAVICOM [Davicom Semiconductor, Inc.], DM9620 Datasheet - Page 36

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

Preliminary
Version: DM9620 -15-DS-P02
February 20, 2012
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RPDCTR-EN
F_LINK_100
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
BP_ADPOK
BP_ALIGN
Reserved
SMRST
MFPSC
SLEEP
TX
0, RW
0, RW
1, RW
0, RW
1, RW
0, RW
1, RW
0, RW
0, RW
0, RO
0, RO
0, RO
0, RO
0, RO
1 = Scrambler and descrambler function bypassed
0 = Normal scrambler and descrambler operation
Bypass symbol alignment function:
1 = Receive functions (descrambler, symbol alignment and
symbol decoding functions) bypassed. Transmit functions
( symbol encoder and scrambler) bypassed
0 = Normal operation
BYPASS ADPOK :
Force signal detector (SD) active. This register is for debug only,
not release to customer.
1=Force SD is OK,
0=Normal operation
Reserved:
Write as 0, ignore on read.
100BASE-TX or FX mode control:
1 = 100BASE-TX operation
0 = 100BASE-FX operation
Reserved
Reserved:
Write as 0, ignore on read.
Force good link in 100Mbps:
0 = Normal 100Mbps operation
1 = Force 100Mbps good link status
This bit is useful for diagnostic purposes.
Reserved:
Write as 0, ignore on read.
Reserved:
Write as 0, ignore on read.
Reduced power down control enable:
This bit is used to enable automatic reduced power down.
0 : Disable automatic reduced power down.
1 : Enable automatic reduced power down.
Reset state machine:
When writes 1 to this bit, all state machines of PHY will be reset.
This bit is self-clear after reset is completed.
MF preamble suppression control:
MII frame preamble suppression control bit
1 = MF preamble suppression bit on
0 = MF preamble suppression bit off
Sleep mode:
Writing a 1 to this bit will cause PHY entering the Sleep mode and
power down all circuit except oscillator and clock generator circuit.
When waking up from Sleep mode (write this bit to 0), the
configuration will go back to the state before sleep; but the state
machine will be reset
Reserved
Force to 0 in application.
USB2.0 to Fast Ethernet Controller
DM9620
36