1 Features

• IEEE 802.1AE MACsec

– MACsec frame expansion: Inbuilt buffering and

flow control support to handle 12 byte IPG

ethernet frames

– Authentication, encryption at line rate

– Cipher suites: GCM-AES-XPN-128/256, GCMAES-

128/256

– Secure Channel: Total 16 SAK enabling 8

Tx/Rx SC

– Auto rollover support for SAK

– Ingress/Egress classification for Ethertype,

VLAN, DMAC: up to 8 parallel rules

– Window replay protection

• IEEE 802.1AS time synchronization & fractional

clock generation

– Highly accurate 1pps signal < +/-5 ns

– Precise time stamping for MACsec encoded

PTP packets

– I2S & TDM8 SCLK/FSYNC clock generation

– Mulitple IOs for event capture and trigger

• IEEE 802.3bw & OA 100BASE-T1 compliant

• TC-10 compliant

– < 20μA sleep current

– Fast wake from sleep by retaining PHY

configuration during sleep (optional)

• MAC Interfaces: MII, RMII, RGMII, SGMII

• Pin compatible with TI's 1000BASE-T1 PHY

– Single board design for 100BASE-T1 and

1000BASE-T1 with required BOM change

• Diagnostic tool kit

– Signal Quality Indication (SQI) & Time Domain

Reflectometry (TDR)

– Voltage, Temperature & ESD sensors

• AEC-Q10 qualified for Automotive Applications:

– Temperature grade 1: –40°C to +125 °C

2 Applications

• ADAS

– Radar

• Infotainment & Cluster

– AVB Audio/Video

• Body Electronics & Lighting

– Body Control Module

– Zone Control Module

• Telematics

3 Description

The DP83TC818S-Q1 device is an IEEE 802.3bw

automotive Ethernet physical layer transceiver. The

device provides all physical layer functions needed

to transmit and receive data, and xMII interface

flexibility. DP83TC818S-Q1 is compliant to Open

Alliance EMC and interoperable specifications over

unshielded single twisted-pair cable. DP83TC818SQ1

supports OA TC-10 low power sleep feature

with wake forwarding for reduced system power

consumption when communication is not required.

The DP83TC818S-Q1 integrates IEEE 802.1AE

line rate security with authentication and optional

encryption support, to secure communication over

the network. The DP83TC818S-Q1 supports up to

16 secure association (SA) channels with automatic

SAK rollover and extended packet numbering support.

DP83TC818S-Q1 offers ingress classification to filter

the unwanted packets & supports WAN MACsec for

end-to-end security.

DP83TC818S-Q1 integrates IEEE 1588v2/802.1AS

hardware time stamping & fractional PLL, enabling

highly accurate time synchronization. The fractional

PLL enables frequency and phase synchronization

of the wall clock (eliminating the need for external

VCXO) and generation of a wide range of time

synchronized frequencies needed for audio and other

ADAS applications. The PHY also integrates IEEE

1722 CRF decode to generate Media clock and Bit

Clock for AVB & other audio applications.