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EVAL-ADV7842EB2Z

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P29
ADV7842
Rev. B | Page 12 of 28
POWER SUPPLY SEQUENCING
POWER-UP SEQUENCE
The recommended power-up sequence of the ADV7842 is as
follows:
1. 3.3 V supplies
2. 2.5 V supply (applies only if using DDR memory)
3. 1.8 V supplies
Figure 7. Recommended Power-Up Sequence
Notes
Reset should be held low while the supplies are being powered up.
• 3.3 V supplies should be powered up first.
• 2.5 V supply should be powered after the 3.3 V supplies are
established but before the 1.8 V supplies.
• 1.8 V supplies should be powered up last.
The ADV7842 can alternatively be powered up by simulta-
neously asserting all supplies.
In this case, care must be taken to ensure that a lower rated supply
does not go above a higher rated supply level, because the supplies
are being established.
POWER-DOWN SEQUENCE
The ADV7842 supplies can be deasserted simultaneously as
long as a higher rated supply does not go below a lower rated
supply.
ADV7842
Rev. B | Page 13 of 28
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
16151413121110987654321
GNDTVDDRXA_C–RXA_0–RXA_1–RXA_2–GNDRXB_C–RXB_0–RXB_1–RXB_2–TVDDP0P1P3GND
XTALPTVDDRXA_C+RXA_0+RXA_1+RXA_2+GNDRXB_C+RXB_0+RXB_1+RXB_2+TVDD
SYNC_OUT
P2P4P5
XTALNGNDCVDDCVDDCVDDPWRDN1RXA_5VRXB_5VHPA_AHPA_BGNDHS/CSVS/FIELDP6P7
PVDDPVDDVGA_SDAVGA_SCLCVDDRTERM
DDCA_SCLDDCA_SDADDCB_SCLDDCB_SDA
CECGNDFIELD/DEEP_MISOP8P9
REFNREFP
VS_IN2/TRI8HS_IN2/TRI7
CVDDCVDDGNDGNDGNDGNDGNDGNDEP_MOSIEP_CSP10GND
TRI3TRI4AIN11AIN12AVDDGNDGNDGNDGNDGNDGNDDVDDIOTTX_SCLEP_SCKP11P12
AIN8AIN9SYNC4AIN10AVDDGNDGNDGNDGNDGNDGNDDVDDIOMCLKTTX_SDAP13P14
SYNC3AIN7TRI2TRI1AVDDGNDGNDGNDGNDGNDGNDDVDDIOAP5AP0P15P16
GNDSYNC2AIN4AIN6AVDDGNDGNDGNDGNDVDDGNDDVDDIOAP4SCLKP17P18
AIN3AIN2
VS_IN1/TRI6
AIN5AVDDGNDGNDVDDVDDVDDVDDDVDDIOAP1AP3P19P20
SYNC1AIN1
HS_IN1/TRI5
AOUTAVDDGNDGNDVDDVDDVDDVDDDVDDIOAP2SCLP21P22
GNDGNDGNDGNDGNDGND
VDD_SDRAMVDD_SDRAMVDD_SDRAMVDD_SDRAMVDD_SDRAM
DVDDIOINT1SDAP23GND
SDRAM_CKE
SDRAM_CK
SDRAM_DQ11SDRAM_DQ15SDRAM_DQ4SDRAM_LDQS
SDRAM_CSSDRAM_A0SDRAM_A4SDRAM_A8
TEST6RESETTEST4INT2P24LLC
SDRAM_CK
SDRAM_UDQSSDRAM_DQ12SDRAM_VREFSDRAM_DQ3SDRAM_DQ7SDRAM_RAS
SDRAM_A10SDRAM_A3SDRAM_A7SDRAM_A11
TEST7AVLINKTEST5P26P25
SDRAM_DQ8SDRAM_DQ9SDRAM_DQ13SDRAM_DQ0SDRAM_DQ2SDRAM_DQ6SDRAM_CAS
SDRAM_BA1SDRAM_A2SDRAM_A6SDRAM_A9
P34P32P30P28P27
GND
SDRAM_DQ10SDRAM_DQ14SDRAM_DQ1
GND
SDRAM_DQ5
SDRAM_WESDRAM_BA0SDRAM_A1SDRAM_A5
GNDP35P33P31P29GND
16151413121110987654321
08849-007
TEST8
Figure 8. Pin Configuration (Top View)
ADV7842
Rev. B | Page 14 of 28
Table 7. Pin Function Descriptions
Pin No. Mnemonic Type Description
A1 GND Ground Ground.
A2 P3 Digital video output Video Pixel Output Port.
A3 P1 Digital video output Video Pixel Output Port.
A4 P0 Digital video output Video Pixel Output Port.
A5 TVDD Power Terminator Supply Voltage (3.3 V).
A6 RXB_2− HDMI input Digital Input Channel 2 Complement of Port B in the HDMI Interface.
A7 RXB_1− HDMI input Digital Input Channel 1 Complement of Port B in the HDMI Interface.
A8 RXB_0− HDMI input Digital Input Channel 0 Complement of Port B in the HDMI Interface.
A9 RXB_C− HDMI input Digital Input Clock Complement of Port B in the HDMI Interface.
A10 GND Ground Ground.
A11 RXA_2− HDMI input Digital Input Channel 2 Complement of Port A in the HDMI Interface.
A12 RXA_1− HDMI input Digital Input Channel 1 Complement of Port A in the HDMI Interface.
A13 RXA_0− HDMI input Digital Input Channel 0 Complement of Port A in the HDMI Interface.
A14 RXA_C− HDMI input Digital Input Clock Complement of Port A in the HDMI Interface.
A15 TVDD Power Terminator Supply Voltage (3.3 V).
A16 GND Ground Ground.
B1 P5 Digital video output Video Pixel Output Port.
B2 P4 Digital video output Video Pixel Output Port.
B3 P2 Digital video output Video Pixel Output Port.
B4 SYNC_OUT Miscellaneous digital Sliced Synchronization Output
B5 TVDD Power Terminator Supply Voltage (3.3 V).
B6 RXB_2+ HDMI input Digital Input Channel 2 True of Port B in the HDMI Interface.
B7 RXB_1+ HDMI input Digital Input Channel 1 True of Port B in the HDMI Interface.
B8 RXB_0+ HDMI input Digital Input Channel 0 True of Port B in the HDMI Interface.
B9 RXB_C+ HDMI input Digital Input Clock True of Port B in the HDMI Interface.
B10 GND Ground Ground.
B11 RXA_2+ HDMI input Digital Input Channel 2 True of Port A in the HDMI Interface.
B12 RXA_1+ HDMI input Digital Input Channel 1 True of Port A in the HDMI Interface.
B13 RXA_0+ HDMI input Digital Input Channel 0 True of Port A in the HDMI Interface.
B14 RXA_C+ HDMI input Digital Input Clock True of Port A in the HDMI Interface.
B15 TVDD Power Terminator Supply Voltage (3.3 V).
B16 XTALP Miscellaneous analog
Input pin for 28.63636 MHz crystal or external 1.8V, 28.63636 MHz Clock Oscillator
Source to Clock the ADV7842.
C1 P7 Digital video output Video Pixel Output Port.
C2 P6 Digital video output Video Pixel Output Port.
C3 VS/FIELD Digital video output
Vertical Synchronization/Field Synchronization. VS is a vertical synchronization output
signal in the CP and HDMI processor. FIELD is a field synchronization output signal in
all interlaced video modes. VS or FIELD can be configured for this pin.
C4 HS/CS Digital video output
Horizontal Synchronization/Composite Synchronization. HS is a horizontal
synchronization output signal in the CP and HDMI processor. CS (composite
synchronization) signal is a single signal containing both horizontal and vertical
synchronization pulses. HS or CS can be configured for this pin.
C5 GND Ground Ground.
C6 HPA_B Miscellaneous digital Hot Plug Assert Signal Output for HDMI Port B.
C7 HPA_A Miscellaneous digital Hot Plug Assert Signal Output for HDMI Port A.
C8 RXB_5V HDMI input 5 V Detect Pin for Port B in the HDMI Interface.
C9 RXA_5V HDMI input 5 V Detect Pin for Port A in the HDMI Interface.
C10
PWRDN1
Miscellaneous digital
Controls the Power-Up of the ADV7842. Should be connected to a digital 3.3 V I/O
supply to power up the ADV7842.
C11 TEST8 Test pin Tie this pin to ground via 4.7 kΩ resistor.
C12 CVDD Power Comparator Supply Voltage (1.8 V).
C13 CVDD Power Comparator Supply Voltage (1.8 V).
C14 CVDD Power Comparator Supply Voltage (1.8 V).
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P29

EVAL-ADV7842EB2Z

Mfr. #:
Buy EVAL-ADV7842EB2Z
Manufacturer:
Analog Devices Inc.
Description:
Video IC Development Tools EVALUATION BOARD I.C.
Lifecycle:
New from this manufacturer.
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