
CM2031
http://onsemi.com
3
Table 1. PIN DESCRIPTIONS
Pins
Name
ESD Level
Description
4, 35
TMDS_D2+
8 kV (Note
3) TMDS 0.9 pF ESD Protection (Note
1)6, 33
TMDS_D2
8 kV (Note
3) TMDS 0.9 pF ESD Protection (Note
1)7, 32
TMDS_D1+
8 kV (Note
3) TMDS 0.9 pF ESD Protection (Note
1)9, 30
TMDS_D1
8 kV (Note
3) TMDS 0.9 pF ESD Protection (Note
1)10, 29
TMDS_D0+
8 kV (Note
3) TMDS 0.9 pF ESD Protection (Note
1)12, 27
TMDS_D0
8 kV (Note
3) TMDS 0.9 pF ESD Protection (Note
1)13, 26
TMDS_CK+
8 kV (Note
3) TMDS 0.9 pF ESD Protection (Note
1)15, 24
TMDS_CK
8 kV (Note
3) TMDS 0.9 pF ESD Protection (Note
1)16
CE_REMOTE_IN
2 kV (Note
4) CE_SUPPLY Referenced Logic Level In
23
CE_REMOTE_OUT
5V_SUPPLY Referenced Logic Level Out plus 10 pF ESD
17
DDC_CLK_IN
2 kV (Note
4) LV_SUPPLY Referenced Logic Level In
22
DDC_CLK_OUT
8 kV (Note
3) 5V_SUPPLY Referenced Logic Level Out plus 10 pF ESD
18
DDC_DAT_IN
2 kV (Note
4) LV_SUPPLY Referenced Logic Level In
21
DDC_DAT_OUT
8 kV (Note
3) 5V_SUPPLY Referenced Logic Level Out plus 10 pF ESD
19
HOTPLUG_DET_IN
2 kV (Note
4) LV_SUPPLY Referenced Logic Level In
20
HOTPLUG_DET_OUT 8 kV (Note
3) 5V_SUPPLY Referenced Logic Level Out plus 10 pF ESD. A 0.1 mF Bypass
Ceramic Capacitor is Recommended on this Pin (Note
2).2
LV_SUPPLY
2 kV (Note
4) Bias for CE / DDC / HOTPLUG Level Shifters
37
CE_SUPPLY
2 kV
CEC Bias Voltage. Previously CM2020 ESD_BYP Pin.
1
5V_SUPPLY
2 kV (Note 4) Current Source for 5V_OUT, VREF for DDC I2C Voltage References, and Bias for 8 kV ESD Pins.
38
N/C
N/A
N/C
3, 5, 8, 11,
14, 25, 28,
31, 34, 36
GND / TMDS_GND
N/A
GND Reference
1. These 2 pins need to be connected together inline on the PCB. See recommended layout diagram.
2. This output can be connected to an external 0.1 mF ceramic capacitor/pads to maintain backward compatibility with the CM2020.
3. Standard IEC 6100042, CDISCHARGE = 150 pF, RDISCHARGE = 330 W, 5V_SUPPLY and LV_SUPPLY within recommended operating
conditions, GND = 0 V, 5V_OUT (pin 38), and HOTPLUG_DET_OUT (pin 20) each bypassed with a 0.1 mF ceramic capacitor connected
to GND.
4. Human Body Model per MILSTD883, Method 3015, CDISCHARGE = 100 pF, RDISCHARGE = 1.5 kW, 5V_SUPPLY and LV_SUPPLY within
recommended operating conditions, GND = 0 V, 5V_OUT (pin 38), and HOTPLUG_DET_OUT (pin 20) each bypassed with a 0.1 mF ceramic
capacitor connected to GND.
5. These pins should be routed directly to the associated GND pins on the HDMI connector with single point ground vias at the connector.