Pi 2 Design Mercury Streamer, Hardware Reference Manual – P8
PAGE 22
P15 PIN
Name
Description
8
GND
Ground
9
LRCLK+ I2S Left/Right Clock Plus
10
MCLK+ I2S Master Clock Plus
11
GND
Ground
12
MCLK-
I2S Master Clock Minus
13
NC
No Connect
14
NC
No Connect
15
W1
Pulled low unless W1 Pin 1-2 Jumper In
16
W1
Pulled low unless W1 Pin 2-3 Jumper In
17
GND
Ground
18
W1
No Connect unless W1 Pin 1-2 Jumper In
19
NC
No Connect
Table 8 – I2S Over HDMI Pinout
8.17
P16 HDMI 1
P16 is a standard Vertical, HDMI connector and conforms to the industry standard
HDMI Pinout. It is connected to the CM4 HDMI Port 1. This connector is not populated
by default.
8.18
U15 – COMBO RCA/OPTO TRANSMITTER
U15 is a Cliff OTJ6 that contains the RCA for AES COAX digital audio output and a
Toslink Transmitter for SPDIF and Optical Digital Audio output.
8.19
D7, D8 – SPEED LED’S
D7 and D8 are Yellow LED’s Indicating either 48Khz/96Khz/192Khz Clock Base (D8) or
44.1Khz/88.2Khz/176.4Khz Clock Base (D7).
8.20
SD1 – MICRO-SD CARD
SD1 is a standard Micro-SD Socket and conforms to the industry standard Pinout. It is
connected to the CM4 SDIO Port. Non-eMMC modules will boot from this card.
