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DM9000BI Schematic ( PDF Datasheet ) - DAVICOM

Teilenummer DM9000BI
Beschreibung Industrial-temperature Ethernet Controller
Hersteller DAVICOM
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Gesamt 30 Seiten
DM9000BI Datasheet, Funktion
DM9000BI
Industrial-temperature Ethernet Controller with General Processor Interface
DAVICOM Semiconductor, Inc.
DM9000BI
Industrial-temperature Ethernet Controller
With General Processor Interface
DATA SHEET
Preliminary
Version: DM9000BI-13-DS-P02
March 20, 2012
Preliminary
Version: DM9000BI-DS-P02
March 20, 2012
1






DM9000BI Datasheet, Funktion
DM9000BI
Industrial-temperature Ethernet Controller with General Processor Interface
1. General Description
The DM9000BI is a fully integrated and cost-effective
Industrial-temperature low pin count single chip Fast
Ethernet controller with a general processor interface,
a 10/100M PHY and 4K Dword SRAM. It is designed
with low power and high performance process
interface that support 3.3V with 5V IO tolerance.
The DM9000BI supports 8-bit and 16-bit data
interfaces to internal memory accesses for various
processors. The PHY of the DM9000BI can interface to
the UTP3, 4, 5 in 10Base-T and UTP5 in 100Base-TX with
HP Auto-MDIX. It is fully compliant with the IEEE 802.3u
Spec. Its auto-negotiation function will automatically
configure the DM9000BI to take the maximum advantage of
its abilities. The DM9000BI also supports IEEE 802.3x full-
duplex flow control.
2. Block Diagram
LED
EEPROM
Interface
TX+/-
RX+/-
PHYceiver
100 Base-TX
transceiver
100 Base-TX
PCS
AUTO-MDIX
10 Base-T
Tx/Rx
MAC
MII
TX Machine
Control
&Status
Registers
RX Machine
Autonegotiation
MII Management
Control
& MII Register
Memory
Management
Internal
SRAM
Preliminary
Version: DM9000BI-13-DS-P02
March 20, 2012
6

6 Page









DM9000BI pdf, datenblatt
3,4 RX+,RX-
5,47 RXGND
6 TXGND
7,8 TX+,TX-
5.6 Miscellaneous
Pin No.
Pin Name
41 TEST
40 PWRST#
DM9000BI
Industrial-temperature Ethernet Controller with General Processor Interface
TP RX
I/O These two pins are the receive input in MDI mode or the transmit output
in MDIX mode.
P RX Ground
P TX Ground
TP TX
I/O These two pins are the transmit output in MDI mode or the receive input
in MDIX mode.
Type
I
I
Description
Operation Mode
Force to ground in normal application
Power on Reset
Active low signal to initiate the DM9000BI
The DM9000BI is ready after 5us when this pin deasserted
5.7 Power Pins
Pin No.
Pin Name
23,30,42
VDD
15,33,45
GND
Type
P
P
Digital VDD
3.3V power input
Digital GND
5.8 strap pins table
1: pull-high 1K~10K, 0: floating (default)
Pin No.
Pin Name Description
Polarity of INT
20
EECK
1: INT pin low active;
0: INT pin high active
21
EECS
DATA Bus Width
1: 8-bit
0: 16-bit
Polarity of CS# in 8-bit mode
22
WAKE
1: CS# pin active high
0: CS# pin active low
INT output type in 8-bit mode
25
GP6
1: Open-Drain
0: force mode
Description
Preliminary
Version: DM9000BI-13-DS-P02
March 20, 2012
12

12 Page





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