Data Sheet

THUNDERCOMM TurboX™ C40x SoM Datasheet
24
3.3.2 RGMII Interfaces
The SoM supports RGMII interfaces can connect Ethernet transceiver.
RGMII Interface
Pin Name
PIN Location
Voltage
Type
Description
Notes
GPIO_61
C13
1.8V
DI
Ethernet transceiver interrupt input
GPIO_63
C14
1.8V
DO
RGMII transmit clock output
GPIO_64
D14
1.8V
DO
RGMII transmit data 3 output
GPIO_65
C15
1.8V
DO
RGMII transmit data 2 output
GPIO_66
D15
1.8V
DO
RGMII transmit data 1 output
GPIO_67
C16
1.8V
DO
RGMII transmit data 0 output
GPIO_68
D16
1.8V
DO
RGMII transmit enable output
GPIO_69
D17
1.8V
DI
RGMII receive clock input
GPIO_70
C18
1.8V
DI
RGMII receive data 3 input
GPIO_71
D18
1.8V
DI
RGMII receive data 2 input
GPIO_72
C19
1.8V
DI
RGMII receive data 1 input
GPIO_73
D19
1.8V
DI
RGMII receive data 0 input
GPIO_74
C20
1.8V
DI
RGMII receive data valid, RGMII input
GPIO_75
D20
1.8V
IO
Management data
GPIO_76
C21
1.8V
DO
Management data clock reference
Table 3-3 RGMII interface definition
3.3.3 SPDIF Interface
The SoM has a digital audio dedicated interface SPDIF.It’s an input port only, and receiving audio signals in
SPDIF format.
SPDIF Interface
Pin Name
PIN Location
Voltage
Type
Description
Notes
SPDIF_RX_COAX_RCA
19
-
DI
SPDIF receive port for electrical input
SPDIF_RX_COAX_EP
20
-
DI
SPDIF receive port for optical input
Table 3-4 SPDIF interface definition
3.3.4 Audio Interface
The SoM provides the audio system digital processing functions.
The SoM provide SLIMBUS, I2S, SWR and DMIC interfaces for audio system. The multiplexing of these
interfaces is as follows.