Crestron DM-RMC-100 DigitalMedia™ Room Controller
M Port
PIN # SIGNAL DESCRIPTION
1 +5V +5V Power
2 I2C_DATA HDCP & EDID Data
3 E_TX- 10/100BaseT Transmit
6 E_TX+ 10/100BaseT Transmit
4 E_RX- 10/100BaseT Receive
5 E_RX+ 10/100BaseT Receive
7 I2C_CLK HDCP & EDID Clock
8 +5V_RTN +5 Power Return
3. To determine which is pin 1 on the cable, hold the cable so that the end of the
eight pin modular jack is facing away from you, with the clip down and copper
side up. Pin 1 is on the far left.
4. For DigitalMedia wiring, use DM-CBL DigitalMedia Cable, CresCAT-D, or
quality CAT5e/CAT6 cable. Do NOT use low-skew cable. Refer to the latest
version of the Crestron DigitalMedia Design Guide (Doc. 4789) for complete
wiring guidelines.
5. DMNet wiring is not compatible with Cresnet® wiring. DMNet wiring cannot be
daisy chained.
6. Refer to the table below for the pinout of the 24 A B G port.
24 A B G Port
PIN # SIGNAL Color
24 24V DC Red
A DMNet + Orange
B DMNet - Grey
G Ground Black
Operations & Installation – DOC. 6743A DigitalMedia™ Room Controller: DM-RMC-100 • 9