3.4.7
S/PDIF RX/TX Interfaces
The SAMA7G54-EK board features S/PDIF TX/RX interfaces.
S/PDIF (Sony/Philips Digital Interface) is a type of digital audio interconnect used to output audio. The signal is
transmitted over a fiber optic cable with TOSLINK connectors.
The SAMA7G54-EK embeds the following:
• Connector J19 for data transmit
• Connector J18 for data receive
Figure 3-44. SPDIF Interface Schematic
GND
SPDIF_RX_PB0
SPDIF_TX_PB1
SPDIF RX/TX
VDD_3V3
GND
VDD_3V3
0.1uF
10V
0402
C234
47uH
L5
0.1uF
10V
0402
C237
VIN 3
VCC 2
GND 1
NC 4
NC 5
DLT2160A
J19
VCC 3
GND 2
VOUT 1
NC 4
NC 5
DLR2160
J18
Table 3-36. S/PDIF Signal Descriptions
PIO
Signal Name
Shared
Signal Description
PB0
SPDIF_RX_PB0
–
S/PDIF receive data
PB1
SPDIF_TX_PB1
–
S/PDIF transmit data
3.4.8
Quad MEMS Microphones
The SAMA7G54-EK embeds four digital MEMS microphones SPK0641HT4H-1.
Those microphones convert acoustic pressure waves into a digital signal. This signal is acquired by the SAMA7G5
MPU through a PDMIC interface as shown in the following schematic.
SAMA7G54-EK
Function Blocks
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2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS50003273A-page 53