Quad Analog-To-Digital Converter (Adau1979); 10/100/1000 Ethernet Physical Layer (Dp83865); Broadr-Reach ® Single Port Automotive Ethernet Transceiver (Bcm89810) - Analog Devices ADSP-SC573 EZ-KIT Manual

Quad Analog-to-Digital Converter (ADAU1979)

EMI. The ADCs can be connected to the electret microphone (ECM) directly and provide the bias for powering the
microphone. Built-in diagnostic circuitry detects faults on input lines and includes comprehensive diagnostics for
faults on microphone inputs. The faults reported are short to battery, short to microphone bias, short to ground,
short between positive and negative input pins, and open input terminals. In addition, each diagnostic fault is availa-
ble as an IRQ flag for ease in system design. An I2C/SPI control port is also included. The ADAU1977 uses only a
single 3.3 V supply. The part internally generates the microphone bias voltage. The microphone bias is programma-
ble in a few steps from 5 V to 9 V. The low power architecture reduces the power consumption. An on-chip PLL
can derive the master clock from an external clock input or frame clock (sample rate clock). When fed with a frame
clock, the PLL eliminates the need for a separate high frequency master clock in the system.
Quad Analog-to-Digital Converter (ADAU1979)
The ADAU1979 incorporates four high performance, analog-to-digital converters (ADCs) with 4.5 V rms capable
ac-coupled inputs. The ADCs use a multibit sigma-delta (Σ-Δ) architecture with continuous time front end for low
EMI. An I2C/serial peripheral interface (SPI) control port is included that allows a microcontroller to adjust volume
and many other parameters. The ADAU1979 uses only a single 3.3 V supply. The device internally generates the
required digital DVDD supply. The low power architecture reduces the power consumption. The on-chip PLL can
derive the master clock from an external clock input or frame clock (sample rate clock). When fed with the frame
clock, it eliminates the need for a separate high frequency master clock in the system.

10/100/1000 Ethernet Physical Layer (DP83865)

The DP83865 is a fully featured Physical Layer transceiver with integrated PMD sublayers to support 10BASE-T,
100BASE-TX and 1000BASE-T Ethernet protocols.
The DP83865 is an ultra low power version of the DP83861 and DP83891. It uses advanced 0.18 um, 1.8 V
CMOS technology, fabricated at National Semiconductor's South Portland, Maine facility.
The DP83865 is designed for easy implementation of 10/100/1000 Mb/s Ethernet LANs. It interfaces directly to
Twisted Pair media via an external transformer. This device interfaces directly to the MAC layer through the IEEE
802.3u Standard Media Independent Interface (MII), the IEEE 802.3z Gigabit Media Independent Interface
(GMII), or Reduced GMII (RGMII).
BroadR-Reach
(BCM89810)
100 Mbps automotive Ethernet transceiver integrated into a single monolithic CMOS chip.
The device performs all of the physical layer functions for BroadR-Reach® encoded Ethernet packets over single-
pair unshielded twisted-pair copper wire, such as FlexRay™. The BCM89810 is designed to exceed automotive
specifications for noise cancellation and transmission jitter, providing consistent and reliable operation over the
broadest range of single-pair twisted-pair automotive cable plants. The BCM89810 is based on Broadcom's proven
2–8
Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from
®
Single Port Automotive Ethernet Transceiver
®
ADSP-SC573 EZ-KIT Manual