M65676FP データシートの表示（PDF） - MITSUBISHI ELECTRIC
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M65676FP Datasheet PDF : 17 Pages
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PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
MITSUBISHI ICs (TV)
M65675FP/M65676FP
DIGITAL NTSC/PAL ENCODER
Color Subcarrier Generation
32-bit accuracy color subcarrier is generated from 27-MHz clock
signal according to the register data.
The subcarrier frequencies are as follows;
M-fsc mode=455fH/2
=3.579545MHz±10Hz
B-fsc_1 mode =1135fH/4
=4.43359375±5Hz
B-fsc_2 mode =1135fH/4+25Hz
=4.43361875±5Hz
Note:The above carrier frequencies are based on the input clock frequency of
27.0MHz. So, the generated subcarrier is also fluctuated according to a drift
of the external clock frequency.
Interpolation
The 13.5MHz data of Y, U and V are processed by an avarage-value
interpolation and then each data rate are increased up to two times
that of 27.0MHz.
Chroma modulation
The selected subcarrier frequency, which generated 27.0MHz rate
U and V signals, is modulated.
Video Anticopy Signal Addition [2]
(Pseudo Sync/AGC/Back Porch Pulses)
This applies to M65675FP only.
The several anticopy signals (Pseudo Sync/AGC/Back Porch
Pulses), in accordance with Macrovision Video anticopy processes
Rev.7.01 dated Sep. 6, 1996, are inserted into the appropriate
video signals according to the register data. (This applies to
M65675FP only)
Video Anticopy Signal Generation
This applies to M65675FP only.
Several anticopy signals in accordance with Macrovision anticopy
processes Rev. 7.01 dated Sep. 6, 1996 are added to Y/C output
signals according to the I2C register data.
For more information about Macrovision video anticopy processes,
please contact nearest MITSUBISHI Electric sales office.
The video anticopy specification is provided to only those
customers of MITSUBISHI Electric Corp. who have executed a
license or a non-disclosure agreement with Macrovision Corp.
Sample request and sales orders require the following procedure.
In the case of the customers who have no license.
◊Contact VP sales & marketing,ACP-PPV, Macrovision
Corporation.
Phone : USA (408) 743-8600
Fax : USA (408) 743-8610
◊Complete the appropriate agreement with Macrovision.
◊Then, inform to MITSUBISHI in writing that the agreement has
completed.
◊Samples will then be sent to customer after MITSUBISHI's
confirmation of it.
Sales Orders
◊ In case the customer has a Macrovision license:
The customer provides MITSUBISHI Electric Corp. with a written
confirmation of the license.
Customer can then purchases M65675FP.
◊ In case the customer does not have a Macrovision license:
The customer must obtain a license or waiver from Macrovision.
The customer must provide MITSUBISHI Electric Corp. with a
written confirmation of the license or waiver from Macrovision.
Customer can then purchases M65675FP.
Synchronization Control
Sync Signal Processing
The H/V sync signals are available in following 3 conditions; (1) in
synchronization with external sync signal, (2) in a slave mode which
refers to a digital blanking code and (3) in a master mode which
refers to a internally generated sync signal, according to the
register data. The timing specifications in each modes are as
follows;
◊ The slave mode
H-sync input condition: 1H =63.555 - 1.5/+10ms (525/60)
=64.0 - 1.5/+10ms (625/50)
V-sync input condition : 1V =262.5H±10H (525/60)
=312.5H±10H (625/50)
Field condition
: Even-1/4H<Vsync<1/4H (Typical Vsync=
0H)
Odd 1/4H£Vsync£3/4H (Typical Vsync=
1/2H)
◊ The master mode
H-sync generation condition: 1H =63.555±0.035ms (525/60)
=64.0±0.035ms (625/50)
V-sync generation condition : 1V =262.5H±1/4H (525/60)
= 312.5H±1/4H (625/50)
Field condition
: Even-1/4H<Vsync<1/4H (Typical
Vsync=0H)
Odd 1/4H£Vsync£3/4H (Typical
Vsync=1/2H)
Timing Signal Generation
A number of internal timing signals are generated with the trailing
edge of sync signals (shown in 4.2.1) as reference. All signals can
be adjusted in 13.5MHz-step up to ±1.2ms with respect to the
reference sync signal.
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