User's Manual

LE940B6 Hardware User Guide
1VV0301331 Rev. 1.8 - 2017-03-15
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PAD Signal I/O Function Type COMMENT
AL16 MAC_RXD[0] I RGMII or RMII RXD[0] 2.5/3.3V
AJ16 MAC_RXD[1] I RGMII or RMII RXD[1] 2.5/3.3V
AG16 MAC_RXD[2] I RGMII RXD[2] 2.5/3.3V
AE16 MAC_RXD[3] I RGMII RXD[3] 2.5/3.3V
AC16 MAC_RX_CLK I RGMII Receive Clock 2.5/3.3V
X16 MAC_RXDV_ER I RGMII Receive Data Available/Error
or RMII Receive Error
2.5/3.3V
G10 ETH_INT_N I Ethernet PHY Interrupt 2.5/3.3V
G8 ETH_RST_N O Ethernet PHY Reset Output 2.5/3.3V
8.5. Audio Interface
The LE940B6 module supports analog and digital audio interfaces.
8.5.1. Analog Audio
The LE940B6 module provides an analog audio interface; a single differential input for the audio
to be transmitted (Uplink), and a balanced output for the received audio (Downlink). The analog
interface is on the following pins:
Table 31: Analog Audio Signals
PAD Signal I/O Function Type Comments
B5 EAR1_MT+ AO Earphone signal output, phase + Audio
A4 EAR1_MT- AO Earphone signal output, phase - Audio
B3 MIC1_MT+ AI Microphone signal input, phase + Audio
A2 MIC1_MT- AI Microphone signal input, phase - Audio
G6 MICBIAS AO Microphone bias is 1.9~2.2V Power
For more details, Application Note will be prepared for the Audio Settings.