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BU16025MUV Folha de dados(PDF) 10 Page - Rohm

Nome de Peças BU16025MUV
Descrição Electrónicos  1 for input 1 output buffer (Sync with OE)
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Fabricante Electrônico  ROHM [Rohm]
Página de início  http://www.rohm.com
Logo ROHM - Rohm

BU16025MUV Folha de dados(HTML) 10 Page - Rohm

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Technical Note
10/16
BU16025MUV
www.rohm.com
2011.01 - Rev.A
© 2011 ROHM Co., Ltd. All rights reserved.
Look up table of I2C_ONB and HDMIID_EN pin
Name
Pin setting
Output state
OEB
DDCEN I2C_ONB HDMI
ID_EN
I
2C
Buffer
Internal
I
2C slave
HPD
TMDS
Internal R
Normal mode
(recommend)
L
L
H
H
OFF
OFF
active
ON
L
H
H
H
active
OFF
active
ON
HPD_OFF mode
L
L
H
L
OFF
OFF
High Impedance
ON
L
H
H
L
active
OFF
High Impedance
ON
TMDS_OFF mode
H
L
H
H
OFF
OFF
active
OFF
H
H
H
H
active
OFF
active
OFF
HPD_TMDS_OFF mode
H
L
H
L
OFF
OFF
High Impedance
OFF
H
H
H
L
active
OFF
High Impedance
OFF
Display Port
Translator mode (HDMI)
-
H
L
H
active
(HDMI)
active
OFF
Display Port
Translator mode (DVI)
-
H
L
L
active
(DVI)
0xFF
active
OFF
None
-
L
L
-
OFF
OFF
active
OFF
Display Port Translator mode
DisplayPort Translator mode are used to access internal I2C slave. I2C Slave register stores value like below. The ASCII
code of this value is ”DP-HDMI ADAPTOR<EOT>
Please read from address 0x00 to 0x0F at the read cycle.
Slave adr : 7'b100_0000
I2C_ONB
HDMIID_EN
Acknowledge
(from slave) Address
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
L
H : HDMI Connect
Occur
Data
0x44 0x50 0x2D 0x48 0x44 0x4D 0x49 0x20 0x41 0x44 0x41 0x50 0x54 0x4F 0x52 0x04
L : DVI Connect
Occur
Data 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF
H
-
None
Data 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF
When I2C_ONB=1, slave adr 7'b100_0000 is disabled


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