CM2030 Datasheet, PDF (13/17 Pages) California Micro Devices Corp – HDMI Transmitter Port Protection and Interface Device

CM2030
Application Information
5V_SUPPLY
LV_SUPPLY
{^{NOTE 1}
TMDS_D2+
TMDS_D2–
TMDS_D1+
TMDS_D1–
TMDS_D0+
TMDS_D0–
TMDS_CK+
TMDS_CK–
ASIC_CEC ²
ASIC_SCL²
ASIC_SDA²
HOT PLUG_DETECT²
D
CEC
NOTE 6
V
CEC
R
CEC
27k Ω
NOTE 5
NO T E 4
R
O PT
CM2020/2030
1
38
2
37
3
36
4
35
5
34
6
33
7
32
8
31
9
30
10
29
11
28
12
27
13
26
14
25
15
24
16
23
17
22
18
21
19
20
5V_OUT
NOTE 3
V
CEC
C
BYP
100nF
R
D AT
2k Ω
R
SCL
2k Ω
R
PD
15k Ω
C
HP
100nF
C
V O UT
100nF
TMDS_D2+
TMDS_GND
TMDS_D2–
TMDS_D1+
TMDS_GND
TMDS_D1–
TMDS_D0+
TMDS_GND
TMDS_D0–
TMDS_CK+
TMDS_GND
TMDS_CK–
CE_REMO TE
N/C
DDC_CLK
DDC_DAT
GND
+5V OUT
HOTPLUG_DET
HDMI
Connector
NOTE 7
Figure 9. Typical Application for CM2030
LAYOUT NOTES
1. Differential TMDS Pairs should be designed as normal 100Ω HDMI Microstrip. Single Ended
(decoupled) TMDS traces underneath MediaGuard^TM, and traces between MediaGuard^TM and Connector
should be tuned to match chip/connector IBIS parasitics.
2 _{Level Shifter signals should be biased with a weak pullup to the desired local LV_SUPPLY. If the local ASIC}
includes sufficient pullups to register a logic high, then external pullups may not be needed.
3 _{Place MediaGuard}TM _{as close to the connector as possible, and as with any controlled impedance line always}
avoid placing any silk-screen printing over TMDS traces.
4 _{CM2020/CM2030 footprint compatibility - For the CM2030, Pin 37 becomes the VCEC power supply pin for the}
slew-rate limiting circuitry. This can be supplied by a 0W jumper to V_CEC which should be depopulated to utilize
the CM2020. The 100nF C_BYP is recommended for all applications.
5 _{CEC pullup isolation. The 27k RCEC and a Schottky DCEC provide the necessary isolation for the CEC pullup.}
Rev. 5 | Page 13 of 17 | www.onsemi.com