Pi 2 Design CM4AES Hardware Reference Manual – P0.1
PAGE 9
sends it as a balanced pair to the 1:1 Isolation Transformer and then to the XLR
connector.
4.7
I2S PARALLEL BUFFER
A 4-Bit Buffer is used to drive the I2S signals (MCLK, BCKL, LRCLK and SDO) to the
I2S Expansion Flex Connector. This device is designed to drive the I2S Bus short
distances (<12 inches).
4.8
I2S DIFFERENTIAL DRIVER
A Quad Differential LVDS Driver takes the I2S Bus and converts each signal into a
balanced differential signal. This is then connected to an HDMI connector. This device
is designed to drive the I2S Bus up to 3 meters.
4.9
AUDIO DATA RATE LED’S
Two LED’s provide visual indication of the selected Audio Data Rate, 48/96/192Khz
(Yellow) and 44.1/88.2/176.4Khz (Red).
