|
|
PDF DM9000B Data sheet ( Hoja de datos )
| Número de pieza | DM9000B | |
| Descripción | Ethernet Controller | |
| Fabricantes | DAVICOM | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de DM9000B (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
DM9000B
Ethernet Controller with General Processor Interface
DAVICOM Semiconductor, Inc.
DM9000B
Ethernet Controller
With General Processor Interface
DATA SHEET
Final
Version: DM9000B-13-DS-F01
February 1, 2008
Final
Version: DM9000B-DS-F01
February 1, 2008
1
1 page  
DM9000B
Ethernet Controller with General Processor Interface
9.11.1 Power down Mode ............................................................................................................................. 43
9.11.2 Reduced Transmit Power Mode......................................................................................................... 43
10. DC and AC Electrical Characteristics .......................................................................... 44
10.1 Absolute Maximum Ratings ( 25°C ) ......................................................................................................... 44
10.1.1 Operating Conditions ......................................................................................................................... 44
10.2 DC Electrical Characteristics (VDD = 3.3V).............................................................................................. 44
10.3 AC Electrical Characteristics & Timing Waveforms .................................................................................. 45
10.3.1 TP Interface ....................................................................................................................................... 45
10.3.2 Oscillator/Crystal Timing .................................................................................................................... 45
10.3.3 Power On Reset Timing..................................................................................................................... 45
10.3.4 Processor I/O Read Timing................................................................................................................ 46
10.3.5 Processor I/O Write Timing................................................................................................................ 47
10.3.6 EEPROM Interface Timing................................................................................................................. 48
11. Application Notes........................................................................................................... 49
11.1 Network Interface Signal Routing.............................................................................................................. 49
11.2 10Base-T/100Base-TX Auto MDIX Application ......................................................................................... 49
11.3 10Base-T/100Base-TX ( Non Auto MDIX Transformer Application ) ........................................................ 50
11.4 Power Decoupling Capacitors ................................................................................................................... 51
11.5 Ground Plane Layout ................................................................................................................................ 52
11.6 Power Plane Partitioning ........................................................................................................................... 53
11.7 Magnetic Selection Guide ......................................................................................................................... 54
11.8 Crystal Selection Guide ............................................................................................................................. 54
12. Package Information ..................................................................................................... 55
13. Ordering Information..................................................................................................... 56
Final
Version: DM9000B-13-DS-F01
February 1, 2008
5
5 Page 
28,29,31 GP3,GP2,GP1
DM9000B
Ethernet Controller with General Processor Interface
General I/O Ports
I/O Registers GPCR and GPR can program these pins
These pins are input ports at default.
5.2 EEPROM Interface
Pin No.
Pin Name
19 EEDIO
20 EECK
21 EECS
5.3 Clock Interface
Pin No.
Pin Name
43 X2
44 X1
Type
Description
I/O,PD IO Data to EEPROM
O,PD
O,PD
Clock to EEPROM
This pin is also used as the strap pin of the polarity of the INT pin
When this pin is pulled high, the INT pin is low active; otherwise the INT
pin is high active
Chip Select to EEPROM
This pin is also used as a strap pin to define the internal memory data bus
width. When it is pulled high, the memory access bus is 8-bit; Otherwise it
is 16-bit.
Type
O
I
Crystal 25MHz Out
Crystal 25MHz In
Description
5.4 LED Interface
Pin No.
Pin Name
39 LED1
38 LED2
5.5 10/100 PHY/Fiber
Pin No.
Pin Name
46 SD
48 BGGND
1 BGRES
2 RXVDD18
9 TXVDD18
Final
Version: DM9000B-13-DS-F01
February 1, 2008
Type
I/O
I/O
Description
Speed LED
Its low output indicates that the internal PHY is operated in 100M/S, or it
is floating for the 10M mode of the internal PHY.
This pin also acts as ISA bus IO16 defined in EEPROM setting in 16-bit
mode.
Link / Active LED
In LED mode 1, it is the combined LED of link and carrier sense signal of
the internal PHY
In LED mode 0, it is the LED of the carrier sense signal of the internal
PHY only
This pin also acts as ISA bus IOWAIT or WAKE defined in EEPROM
setting in 16-bit mode.
Type
I
P
I/O
P
P
Description
Fiber-optic Signal Detect
PECL signal, which indicates whether or not the fiber-optic receive pair is
receiving valid levels
Band gap Ground
Band gap Pin
1.8V power output for TP RX
1.8V power output for TP TX
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet DM9000B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| DM9000 | ISA to Ethernet MAC Controller |  Davicom |
| DM9000A | Ethernet Controller | Davicom |
| DM9000B | Ethernet Controller | DAVICOM |
| DM9000BI | Industrial-temperature Ethernet Controller | DAVICOM |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |