DM9620 DAVICOM [Davicom Semiconductor, Inc.], DM9620 Datasheet - Page 16

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

Key to Default
In the register description that follows, the default column
takes the form:
<Reset Value>, <Access Type>
Where：
<Reset Value>:
P = power on reset default value
H = hardware reset command default value
S = software reset default value
4.1 Network Control Register (00H)
Preliminary
Version: DM9620 -15-DS-P02
February 20, 2012
MODE_CTL
1
0
X
TXC/USBS
SQUELCH
USB_ADR
2:1
Bit
7
6
5
4
3
USBDA
USBC
RXC
WCR_MODE
EXT_PHY
WAKEEN
Bit set to logic one
Bit set to logic zero
No default value
Name
FCOL
FDX
LBK
Mode Control
USB squelch Control
USB Address
USB device address register
Received packet counter register
Transmit packet counter/USB status register
USB control register
PHS0,RW
PHS0,RW
PH00,RW
PHS,RW
PT0,RW
PE0,RW
Default
External PHY mode (valid when pin TEST1 tie to ground)
Wakeup event enable
When set, it enables the wakeup function.
Clearing this bit will also clear all wakeup event status.
Write To Clear Mode
When set, the following register bits are cleared by write ‘1” .
Force Collision in Loopback Mode
Used for testing only.
Full-Duplex mode.
Read only in Internal PHY mode.
This bit can be written only in External PHY mode.
This bit can also be forced by register 2EH bit 5 and 1.
Loopback mode
Bit 2 1
1: Select external PHY
0: select Internal PHY.
This bit can be forced by register 2EH bit 5.
1: Full-Duplex mode
0: Half-Duplex mode
Register 1 bit 2 and 3
Register 7
Register 0AH bit 2
Register 82H ~ 86H
0
0
1
1
0
1
0
1
normal
MAC internal loopback
internal PHY digital loopback
internal PHY analog loopback
E = default value from EEPROM
T = default value from strap pin
<Access Type>:
RO = Read only
RW = Read/Write
R/C = Read and Clear
RW/C1=Read/Write and Cleared by write 1
WO = Write only
Reserved bits are shaded and should be written with 0.
Reserved bits are undefined on read access.
Description
91H
95H
96H
F0H
F1H
F2H
F4H
USB2.0 to Fast Ethernet Controller
00H
04H
00H
00H
00H
10H
00H
DM9620
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