2/24/2008 9T6WP
Preliminary Hardware Data Module
BCM7405
06/29/07
Hardware Signal Descriptions
Bro a d c o m Co rp o r a ti o n
Document
7405-1HDM00-R
Pin Definition Notations Page 1-99
1
7 - Digital Video
HDMI_CEC_T
ERM
AIO
–
5
–
E18
Consumer electronic
control
1
7 - Digital Video
HDMI_CEC
AIO
–
5
–
D20
Consumer electronic
control
1
7 - Digital Video
HDMI_HTPLG
I
–
5
–
E20
Hotplug connection
RF Modulator - 12
1
13 - Analog I/O
RFMOUT_N
AO
–
2.5
–
A27
RF modulator analog output
1
13 - Analog I/O
RFMOUT_P
AO
–
2.5
–
B27
RF modulator analog output
1
13 - Analog I/O
RFM_EXT_R_
POS
AI
–
2.5
–
B28
RF modulator DAC bias
1
13 - Analog I/O
RFM_PLL_TE
ST
AO
–
2.5
–
G25
RFM PLL test
1
11 - UHF/Video/HDMI/
RFM/AUDIO/...
RFM_AVDD2
P5_0
APWR
–
2.5
–
C27
RF modulator analog 2.5
volt power supply
1
11 - UHF/Video/HDMI/
RFM/AUDIO/...
RFM_AVDD2
P5_1
APWR
–
2.5
–
C28
RF modulator analog 2.5
volt power supply
1
11 - UHF/Video/HDMI/
RFM/AUDIO/...
RFM_AVDD1
P2
APWR
–
1.2
–
D27
RF modulator digital 1.2 volt
power supply
1
11 - UHF/Video/HDMI/
RFM/AUDIO/...
RFM_AVSS_0
AGND
–
GND
–
E28
RF modulator analog
ground
1
11 - UHF/Video/HDMI/
RFM/AUDIO/...
RFM_AVSS_1
AGND
–
GND
–
D28
RF modulator analog
ground
1
11 - UHF/Video/HDMI/
RFM/AUDIO/...
RFM_AVSS_2
AGND
–
GND
–
E27
RF modulator analog
ground
1
13 - Analog I/O
RFM_EXT_R_
NEG
AI
–
GND
–
A28
RF Modulator DAC Bias
reference. (Do not connect
to ground)
Note: Connect to
RFM_EXT_R_POS though
6K ohm resistor.
1
11 - UHF/Video/HDMI/
RFM/AUDIO/...
RFM_PLLCAP
AO
–
1.2
–
B29
RF Modulator Internal
Voltage Regulator Output
for RFM PLL (no connection
- for probing only)
Audio Connections
Audio Output Interface – 10
1
9 - Analog Audio/
Digital Audio
AUD0_SPDIF
S/O
–
3.3
–
C21
Digital Audio SPDIF output
0
1
9 - Analog Audio/
Digital Audio
AUD0_LEFT_
p
AO
–
2.5
–
A22
Left audio differential output
(6mA 2.5V, 13.5 MHz)
1
9 - Analog Audio/
Digital Audio
AUD0_LEFT_
n
AO
–
2.5
–
B22
Left audio differential output
(6mA 2.5V, 13.5 MHz)
Table 1-19: Pin Descriptions (Cont.)
# of
Pins
Orcad Schematic
Block
Label
I/O
Res.
Tol.
(V)
Drv.
(mA)
Loc.
Description