Ethernet Controllers | T30HM1TS2500

The T30HM1TS2500 (T2500) is an advanced 10BASE-T1S ethernet transceiver with an integrated Media Access Controller (MAC-PHY). It is a next generation 10BASE-T1S device designed on the new Treo platform (BCD65). It is capable of communication with multiple nodes connected to shared medium (UTP) at 10 Mbps.

The T2500 consists of CSMA/CD MAC and PHY with Physical Layer Collision Avoidance (PLCA). PLCA prevents collisions at the physical layer and therefore improves the throughput of CSMA/CD. The T2500 uses SPI (with a clock up to 25 MHz) as an interface to higher layers.

The T30HM1TS2500 is an IEEE 802.3cg compliant Ethernet Transceiver with integrated Media Access Controller (MAC-PHY). It is capable of communication with multiple nodes connected to a shared medium (UTP) at 10 Mbps. The T30HM1TS2500 consists of CSMA/CD MAC and PHY with Physical Layer Collision Avoidance (PLCA). The T30HM1TS2500 uses SPI (with a clock up to 25 MHz) as an interface to higher layers. This device is AEC-Q100 qualified for automotive applications.

Features 

       Wake-up/Sleep

• Low current consumption in sleep mode (35 µA)
• Inhibit switch to VBAT
• Local input / Bus wake-up possibility
• OPEN Alliance TC10 compliant

        Signal Quality Index (SQI / SQI+)

• OPEN Alliance TC14 compliant

       Topology discovery

• Distance measurement between nodes
• OPEN Alliance TC14 compliant

       Timestamping

• For precise time synchronization
• OPEN Alliance TC6 compliant

       Capture / Compare modules

• Time capture of events on DIO pins
• Time-triggered events on DIO pins

       PLCA diagnostic

• Multiple coordinators connected to the link segment
• Stolen transmit opportunity (duplicated PLCA node ID)
• PLCA cycle restart before transmit opportunity (wrong node count setting)

       Coordinator redundancy

• Coordinator back-up possibility

       PLCA Precedence Mode

• Lower PLCA IDs get precedence over higher ones
• Coordinator sends a new beacon as soon as any station transmits

       HDD (Harness Defect Detection)

• Detection of short / open of the link segment
• Sensitive enough to detect extra / missing termination

       MAC Address Filtering

• Filtering frames based on the destination address

       Open Alliance Compatible SPI Interface

• Clock up to 25 MHz
• OPEN Alliance TC6 compliant

       Single 3.3 V supply possibility
       Direct battery connection (VBAT) up to 48 V

Application

• In-Vehicle Networking
• Industrial Automation
• Home / Building Control
• Security and Field Instrumentation

Block Diagram