OMAP4460 Pandaboard ES
System Reference Manual
Revision 0.1
September 29, 2011
DOC-21054
Page 30 of 82
OMAP4460
HDMI_CLOCKX
O
HDMI_CLOCKY
O
HDMI_DATA0X
O
HDMI_DATA0Y
O
HDMI Connector
Type A
(P2)
DAT0-
CLK+
IO
IO
CLK-
I
DAT0+
IO
HDMI_DATA1X
O
HDMI_DATA1Y
O
HDMI_DATA2X
O
HDMI_DATA2Y
O
HDMI_HPD/GPIO_63
I
HDMI_CEC/GPIO_64
IO
DAT1-
IO
DAT1+
IO
DAT2-
IO
DAT2+
IO
HDMI_DDC_SCL/GPIO_65
O
TPD12S015A
(U5)
HDMI_DDC_SDA/GPIO_66
IO
GPIO_41
O
GPIO_60
O
LS
_OE
I
CT
_C
P_
H
P
D
I
HP
D
_
A
O
CE
C
_
A
IO
SC
L_
A
I
SD
A_
A
IO
CL
K-
E
CL
K+
E
D0
-
E
D0+
E
D1
-
E
D1
+
E
D2
-
E
D2+
E
HP
D
_
B
I
CE
C
_
B
IO
SC
L_
B
O
SD
A_
B
IO
SDA
IO
SCL
I
CEC
IO
HPLG
O
5V
OU
T
P
5Vdc
I
R37
R36
P
DNI
DNI
Figure 7 – Panda HDMI Interface Block Diagram
In addition to providing ESD protection on the signals coming from the connector, this device performs
voltage translation on the control signals in the HDMI interface (SCL, SDA, CEC, and HPD) from the
1.8V levels of the OMAP4460 to the 5V levels required by a TV set. It also implements a DC/DC boost
converter that operates from the “battery” voltage, VBAT, and outputs a 5Vdc output that is capable of
sourcing up to 55mA of current. See Table 4 for the GPIOs used on the HDMI interface and a description
of their function. The direction column in this table indicates whether this device is an output from
OMAP (O) or an input to OMAP (I).
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