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PDF DM9621 Data sheet ( Hoja de datos )
| Número de pieza | DM9621 | |
| Descripción | USB2.0 to 10/100M Fast Ethernet Controller | |
| Fabricantes | DAVICOM | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DM9621 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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DM9621
USB2.0 to Fast Ethernet Controller
DAVICOM Semiconductor, Inc.
DM9621
USB2.0 to 10/100M Fast Ethernet Controller
DATA SHEET
Preliminary
Version: DM9621 -14-DS-P02
February 23, 2011
Version: DM9621-DS-P02
February 23, 2011
1
1 page  
DM9621
USB2.0 to Fast Ethernet Controller
7.2.24 Auto-Negotiation (continued) ........................................................................ 53
8. DC and AC Electrical Characteristics ................................................................................ 54
8.1 Absolute Maximum Ratings ( 25°C )......................................................................... 54
8.1.1 Operating Conditions...................................................................................... 54
8.2 DC Electrical Characteristics (VDD = 3.3V).............................................................. 55
8.3 AC Electrical Characteristics & Timing Waveforms .................................................. 55
8.3.1 TP Interface .................................................................................................... 55
8.3.2 Oscillator/Crystal Timing................................................................................. 56
9. AC Timing waveform: ........................................................................................................ 57
9.1 Power On Reset Timing............................................................................................ 57
9.2 EEPROM timing ....................................................................................................... 58
9.3 RMII TX timing.......................................................................................................... 59
9.4 RMII RX timing ......................................................................................................... 59
10. Magnetic and Crystal Selection Guide............................................................................. 60
10.1 Magnetic Selection Guide....................................................................................... 60
10.2 Crystal Selection Guide .......................................................................................... 60
11. Application Circuit ............................................................................................................ 62
12. Package Information........................................................................................................ 65
13. Ordering Information........................................................................................................ 66
Preliminary
Version: DM9621 -14-DS-P02
February 23, 2011
5
5 Page 
LED Interface
27 USB_LED
28 SPD_LED
29 LNK_LED
10/100 PHY
1 BGGND
2 BGRES
3 RXVDDOUT
4 RX+
5 RX-
6 RXGND
7 TXGND
8 TX+
9 TX-
10 TXVDDOUT
Miscellaneous
25 SMI_D
26 SMI_CK
32 VBUS_IN
33 WOL
34 RSTB
31 TEST2
30 TEST1
Power
24,45
16,48
VCC3
GND
DM9621
USB2.0 to Fast Ethernet Controller
USB LED
O
Active low for USB HS mode
Floating for USB FS mode
Flash if traffic on USB
SPEED LED
O Active low for Ethernet 100M
Floating for Ethernet 10M
Link LED
O
Active low for Ethernet link
Floating for Ethernet non-link
Flash if traffic on Ethernet
P Band gap ground.
I/O Bandgap pin. Connect 6.98K 1% resister to GND
O 1.8V power out for RX
I TP RX input
I TP RX input
P RX ground
P TX ground
O TP TX output
O TP TX output
O 1.8V power out for TX power
I/O
Serial Management Interface Data.
Tie to ground in application.
Serial Management Interface Clock.
I/O Tie to ground in application.
This pin can also as a GPIO wakeup event defined in register 0FH.
I
VBUS input
Tie to high in bus power mode
O Issue a wake-up signal when wake-up event happens.
I
Hardware Reset
Active low signal to initiate the DM9621
I Test Mode 2, tie to ground in application.
Define Pin11-15, 17-19 mode
I 0: RMII
1: GPIO controlled by registers 34H~35H
P Digital VCC 3.3V
P Digital GND
Preliminary
Version: DM9621 -14-DS-P02
February 23, 2011
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet DM9621.PDF ] | |
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