SAA7127 Ver la hoja de datos (PDF) - Philips Electronics
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SAA7127 Datasheet PDF : 44 Pages
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Philips Semiconductors
Digital video encoder
Product specification
SAA7126H; SAA7127H
6 PINNING
SYMBOL PIN
RES
1
SP
2
AP
3
LLC1
4
VSSD1
5
VDDD1
6
RCV1
7
RCV2
8
MP7
9
MP6
10
MP5
11
MP4
12
MP3
13
MP2
14
MP1
15
MP0
16
VDDD2
17
VSSD2
18
RTCI
19
VDD(I2C)
20
SA
21
VSSA1
22
RED
23
n.c.
24
VDDA1
25
GREEN
26
n.c.
27
VDDA2
28
BLUE
29
CVBS
30
VDDA3
31
VSSA2
32
VSSA3
33
XTAL
34
TYPE
−
I
I
I
supply
supply
I/O
I/O
I
I
I
I
I
I
I
I
supply
supply
I
supply
I
supply
O
−
supply
O
−
supply
O
O
supply
supply
supply
O
DESCRIPTION
reserved pin; do not connect
test pin; connected to digital ground for normal operation
test pin; connected to digital ground for normal operation
line-locked clock input; this is the 27 MHz master clock
digital ground 1
digital supply voltage 1
raster control 1 for video port; this pin receives/provides a VS/FS/FSEQ signal
raster control 2 for video port; this pin provides an HS pulse of programmable
length or receives an HS pulse
double-speed 54 MHz MPEG port; it is an input for “CCIR 656” style multiplexed
CB-Y-CR data; data is sampled on the rising and falling clock edge; data sampled
on the rising edge is then sent to the encoding part of the device; data sampled on
the falling edge is sent to the RGB part of the device (or vice versa, depending on
programming)
digital supply voltage 2
digital ground 2
real-time control input (I2C-bus register SRES = 0): if the LLC1 clock is provided by
an SAA7111 or SAA7151B, RTCI should be connected to the RTCO pin of the
respective decoder to improve the signal quality. Sync reset input (I2C-bus register
SRES = 1): a HIGH impulse resets synchronization of the encoder (first field, first
line).
sense input for I2C-bus voltage; connect to I2C-bus supply
select I2C-bus address; LOW selects slave address 88H, HIGH selects slave
address 8CH
analog ground 1 for RED (CR) (C) and GREEN (Y) (VBS) outputs
analog output of RED (CR) or (C) signal
not connected
analog supply voltage 1 for RED (CR) (C) output
analog output of GREEN (Y) or (VBS) signal
not connected
analog supply voltage 2 for GREEN (Y) (VBS) output
analog output of BLUE (CB) or (CVBS) signal
analog output of CVBS (CSYNC) or (VBS) signal
analog supply voltage 3 for BLUE (CB) (CVBS) and CVBS (CSYNC) (VBS) outputs
analog ground 2 for BLUE (CB) (CVBS) and CVBS (CSYNC) (VBS) outputs
analog ground 3 for the DAC reference ladder and the oscillator
crystal oscillator output
2002 Oct 15
5
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