Features: *Fully comply with IEEE 802.3 / IEEE 802.3u 10Base-T/100Base-TX, ANSI X3T12 TP-PMD 1995 standard
*Support MDI/MDI-X auto crossover function (Auto-MDI)
*Support Auto-Negotiation function, compliant with IEEE 802.3u
*Fully integrated Physical layer transceiver On-chip filtering with direct interface to magnetic transformer
*Selectable repeater or node mode
*Selectable MII or RMII (Reduced MII) mode for 100Base-TX and 10Base-TX. Selectable MII or GPSI (7-Wired) mode for 10Base-T
*Selectable full-duplex or half-duplex operation
*MII management interface with maskable interrupt output capability
*Provide Loopback mode for easy system diagnostics
*LED status outputs indicate Link/ Activity, Speed10/100 and Full-duplex/Collision. Support Dual-LED optional control
*Single low power Supply of 3.3V with an advanced CMOS technology
*Very Low Power consumption modes:
Power Reduced mode (cable detection)
Power Down mode
Selectable TX drivers for 1:1 or 1.25:1 transformers for additional power reduction. 1: 1 transformers only when Auto MDIX Enable .
*Compatible with 3.3V and 5.0V tolerant I/Os
*48-pin LQFP
Specifications
| Symbol |
Parameter |
Min. |
Max. |
Unit |
Conditions |
| DVDD, |
Supply Voltage |
-0.3 |
3.6 |
V |
|
| VIN |
DC Input Voltage (VIN) |
-0.5 |
5.5 |
V |
|
| VOUT |
DC Output Voltage(VOUT) |
-0.3 |
3.6 |
V |
|
| Tstg |
Storage Temperature Rang (Tstg) |
-65 |
+150 |
|
|
| Tc |
Case Temperature |
0 |
85 |
|
|
| LT |
Lead Temp. (TL, Soldering, 10 sec.) |
- |
235 |
|
|
Description The DM9161A is a physical layer, single-chip, and low power transceiver for 100BASE-TX and 10BASE-T operations. On the media side, it provides a direct interface either to Unshielded Twisted Pair Category 5 Cable (UTP5) for 100BASE-TX Fast Ethernet, or UTP5/UTP3 Cable for 10BASE-T Ethernet. Through the Media Independent Interface (MII), the DM9161A connects to the Medium Access Control (MAC) layer, ensuring a high inter operability from different vendors.
TheDM9161A uses a low power and high performance advanced CMOS process. It contains the entire physical layer functions of 100BASE-TX as defined by IEEE802.3u, including the Physical Coding Sublayer (PCS),Physical Medium Attachment (PMA), Twisted Pair Physical Medium Dependent Sublayer (TP-PMD), 10BASE-TX Encoder/Decoder(ENC/DEC), and Twisted Pair Media Access Unit (TPMAU). The DM9161A provides a strong support for the auto-negotiation function, utilizing automatic media speed and protocol selection. Furthermore, due to the built-in wave shaping filter, the DM9161A needs no external filter to transport signals to the media in
100BASE-TX or 10BASE-T Ethernet operation.
DM9161A Data Sheet
