SAA7109EEB NXP Semiconductors, SAA7109EEB Datasheet - Page 94
SAA7109EEB
Manufacturer Part Number
SAA7109EEB
Description
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7109EEB.pdf
(202 pages)
Specifications of SAA7109EEB
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Philips Semiconductors
10.4
The expansion port is intended for transporting video
streams of image data from other digital video circuits such
as MPEG encoder/decoder and video phone codec, to the
image port (I port); see Table 57.
The expansion port consists of two groups of signals/pins:
Table 57 Signals dedicated to the expansion port
2004 Mar 16
SYMBOL
XPD7 to
XPD0
XCLK
XDQ
XRDY
XRH
XRV
XTRI
8-bit data, I/O, regular video components Y-C
4 : 2 : 2, i.e. C
video samples (e.g. ADC test). In input mode the data
bus can be extended to 16-bit by pins HPD7 to HPD0.
Clock, synchronization and auxiliary signals,
accompanying the data stream, I/O.
PC-CODEC
Video expansion port (X port)
L1 to L3,
K2, K3,
M1, M2
and N1
PIN
M3
M4
N3
N2
K1
L5
B
-Y-C
R
-Y, byte serial, exceptionally raw
I/O
I/O
I/O
I/O
I/O
I/O
O
I
X port data: in output mode controlled by decoder
section, for data format see Table 58; in input mode
Y-C
of a 16-bit Y-C
clock at expansion port: if output, then copy of LLC;
as input normally a double pixel clock of up to
32 MHz or a gated clock (clock gated with a
qualifier)
data valid flag of the expansion port input
(qualifier): if output, then decoder (HREF and
VGATE) gate (see Fig.31)
data request flag = ready to receive, to work with
optional buffer in external device, to prevent internal
buffer overflow;
second function: input related task flag A/B
horizontal reference signal for the X port: as output:
HREF or HS from the decoder (see Fig.31); as
input: a reference edge for horizontal input timing
and a polarity for input field ID detection can be
defined
vertical reference signal for the X port: as output:
V123 or field ID from the decoder,
see Figs 29 and 30; as input: a reference edge for
vertical input timing and for input field ID detection
can be defined
port control: switches X port input to 3-state
B
-C
R
4 : 2 : 2 serial input data or luminance part
B
-C
B
-C
R
DESCRIPTION
4 : 2 : 2 input
R
94
As output, these are direct copies of the decoder signals.
The data transfers through the expansion port represent a
single D1 port, with half duplex mode. The SAV and EAV
codes may be inserted optionally for data input (controlled
by bit XCODE[92H[3]]). The input/output direction is
switched for complete fields only.
SAA7108E; SAA7109E
OFTS[2:0] 13H[2:0], 91H[7:0]
and C1H[7:0]
XCKS[92H[0]]
XRQT[83H[2]]
XRHS[13H[6]], XFDH[92H[6]]
and XDH[92H[2]]
XRVS[1:0] 13H[5:4],
XFDV[92H[7]] and XDV[1:0]
92H[5:4]
XPE[1:0] 83H[1:0]
Product specification
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