PRELIMINARY
CM2006
Product Description (cont’d)
Two N-channel MOSFETs provide the level shifting
function required when the DDC controller or EDID
EEPROM is operated at a lower supply voltage than
the monitor. The gate terminals for these MOSFETS
(V
CC_DDC
) should be connected to the supply rail (typi-
cally 3.3V, 2.5V etc.) that supplies power to the trans-
ceivers of the DDC controller.
PACKAGE / PINOUT DIAGRAM
Top View
V
CC
ENABLE
VIDEO_1
VIDEO_2
VIDEO_3
GND
V
CC_DDC
BYP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SYNC_OUT2
SYNC_IN2
SYNC_OUT1
SYNC_IN1
DDC_IN2
DDC_OUT2
DDC_OUT1
DDC_IN1
Note: This drawing is not to scale.
16 Pin QSOP
PIN DESCRIPTIONS
LEAD(s)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
V
CC
ENABLE
VIDEO_1
VIDEO_2
VIDEO_3
GND
V
CC_DDC
BYP
DDC_IN1
DDC_OUT1
DDC_OUT
DDC_IN2
SYNC_IN1
SYNC_OUT1
SYNC_IN2
SYNC_OUT2
DESCRIPTION
This is a supply input for the SYNC_1 and SYNC_2 level shifters, video protection and the
DDC circuits.
Active high enable. Disables the Sync buffer outputs when low.
Video signal ESD protection channel. This pin is typically tied one of the video lines between
the controller device and the video connector.
Video signal ESD protection channel. This pin is typically tied one of the video lines between
the controller device and the video connector.
Video signal ESD protection channel. This pin is typically tied one of the video lines between
the controller device and the video connector.
Ground reference supply pin.
This is an isolated supply input for the DDC_1 and DDC_2 level-shifting N-FET gates.
An external 0.22uF bypass capacitor is required on this pin.
DDC signal input. Connects to the video connector side of one of the DDC lines.signal output.
DDC signal output. Connects to the monitor DDC logic.
DDC signal output. Connects to the monitor DDC logic.
DDC signal input. Connects to the video connector side of one of the DDC lines
Sync signal buffer input. Connects to the video connector side of one of the sync lines.
Sync signal buffer output. Connects to the monitor SYNC logic.
Sync signal buffer input. Connects to the video connector side of one of the sync lines.
Sync signal buffer output. Connects to the monitor SYNC logic.
© 2006 California Micro Devices Corp. All rights reserved.
2
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.cmd.com
02/21/06
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
