DM9620 DAVICOM [Davicom Semiconductor, Inc.], DM9620 Datasheet - Page 12

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

3.2.3 EEPROM Interface
3.2.4 USB Interface
3.2.5 Clock Interface
3.2.6 LED Interface
Preliminary
Version: DM9620 -15-DS-P02
February 20, 2012
19,20,21,22
Pin No.
25
31
24
28
29
30
51
52
53
54
55
56
57
58
60
61
49
50
38
39
40
41
X2
X1
EEDIO
EECK
EECS
VCC3A
GND
RREF
DM (D-)
DP (D+)
VCC33_PLL
GND_PLL
VCC18
X1_12M
X2_12M
USB_LED
FDX_LED
SPD_LED
LNK_LED
RXER
RXC
RXDV
RXD[3:0]
Pin Name
Type
O/D
O/D
O/D
O/D
I/O
I/O
I/O
O
O
O
O
O
P
P
P
P
I
I
I
I
I
I
I
Data from EEPROM
Clock to EEPROM
Chip Select to EEPROM
3.3V for USB
Ground for USB
Reference resistor to analog USB ground (12K 1% for USB)
USB Data Minus
3.3V for USB PLL
Ground for USB PLL
1.8V power out for USB
Crystal 25MHz Out for Ethernet
Crystal 25MHz In for Ethernet
Crystal 12MHz In for USB (Option, used when strap pin 30 EECS
pull-high), Normal N.C. * Note1
Crystal 12MHz out for USB (Option, used when strap pin 30 EECS
pull-high), Normal N.C. * Note1
* Note1: When strap pin 30 EECS pull-low, 12MHz clock from
USB LED
Active low for USB HS mode
Floating for USB FS mode
Flash if traffic on USB
Full Duplex LED
Active low for Full Duplex
Floating for Half Duplex
SPEED LED
Active low for Ethernet 100M
Floating for Ethernet 10M
Link LED
Active low for Ethernet link
Floating for Ethernet non-link
USB Data Plus
MII Receive Error
MII Receive Clock
MII Receive Data Valid
MII Receive Data
4-bit nibble data input (synchronous to RXC)
internal PLL, detail see 3.3 strap pins table
USB2.0 to Fast Ethernet Controller
Description
DM9620
12