參數(shù)資料
型號(hào)： SAA7140B
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： High Performance Scaler HPS
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP128
文件頁數(shù)： 36/68頁
文件大小： 432K
代理商： SAA7140B
1996 Sep 04
36
Philips Semiconductors
Objective specification
High Performance Scaler (HPS)
SAA7140A; SAA7140B
To activate the ‘Sleep Mode’ the scalers processing has to
be switched to one of the inactive clock inputs of the
expansion port. For example, If LLCIO is used as input and
output in the application then:
LLCIN grounded => ‘Sleep Mode’ is active, if I
2
C-bus
bits FLDC = 0, SRIO = 0 and LLCS = 1.
and If LLCIN is used as input and LLCIO is used as output:
LLCIN pulled down => ‘Sleep Mode’ is active, if I
2
C-bus
bits FLDC = 0, SRIO = 0 and LLCS = 1.
LLCIO pulled down => ‘Sleep Mode’ is active, if I
2
C-bus
bits FLDC = 0, SRIO = 1 and LLCS = 1.
To activate the scaler again, switch back to an active input
clock, via SRIO and/or LLCS.
In ‘Sleep Mode’ the power consumption of the SAA7140A
and SAA7140B is reduced to approximately 15% of its
normal operational value.
Table 4
VRAM port output data formats (VRO31 to VRO16) at FS2 bit = 0 and VOF bit = 1 (can be set via I
2
C-bus),
burst mode only, Pixel order = n, n + 1, n + 2, etc.
Notes
1.
2.
3.
4.
α
= keying bit.
RGB and YUV = digital signals.
e = even pixel numbers.
a and b = consecutive pixels.
PIXEL
OUTPUT
BITS
FS1 = 0; FS0 = 0
RGB (5
,
5
,
5) +
α
32-BIT WORDS
(1)(2)
FS1 = 0; FS0 = 1
YUV 4 : 2 : 2
32-BIT WORDS
(2)(3)
FS1 = 1; FS0 = 0
YUV 4 : 2 : 2
16-BIT WORDS
(2)(3)
FS1 = 1; FS0 = 1
8-BIT MONOCHROME
32-BIT WORDS
(4)
n
n + 2
n + 4
n
n + 2
n + 4
n
n + 1
n + 2
n
n + 1
n + 4
n + 5
n + 8
n + 9
VRO31
VRO30
VRO29
VRO28
VRO27
VRO26
VRO25
VRO24
VRO23
VRO22
VRO21
VRO20
VRO19
VRO18
VRO17
VRO16
α
α
α
Y
e7
Y
e6
Y
e5
Y
e4
Y
e3
Y
e2
Y
e1
Y
e0
U
e7
U
e6
U
e5
U
e4
U
e3
U
e2
U
e1
U
e0
Y
e7
Y
e6
Y
e5
Y
e4
Y
e3
Y
e2
Y
e1
Y
e0
U
e7
U
e6
U
e5
U
e4
U
e3
U
e2
U
e1
U
e0
Y
e7
Y
e6
Y
e5
Y
e4
Y
e3
Y
e2
Y
e1
Y
e0
U
e7
U
e6
U
e5
U
e4
U
e3
U
e2
U
e1
U
e0
Y
e7
Y
e6
Y
e5
Y
e4
Y
e3
Y
e2
Y
e1
Y
e0
U
e7
U
e6
U
e5
U
e4
U
e3
U
e2
U
e1
U
e0
Y
o7
Y
o6
Y
o5
Y
o4
Y
o3
Y
o2
Y
o1
Y
o0
V
e7
V
e6
V
e5
V
e4
V
e3
V
e2
V
e1
V
e0
Y
e7
Y
e6
Y
e5
Y
e4
Y
e3
Y
e2
Y
e1
Y
e0
U
e7
U
e6
U
e5
U
e4
U
e3
U
e2
U
e1
U
e0
Y
a7
Y
a6
Y
a5
Y
a4
Y
a3
Y
a2
Y
a1
Y
a0
Y
b7
Y
b6
Y
b5
Y
b4
Y
b3
Y
b2
Y
b1
Y
b0
Y
a7
Y
a6
Y
a5
Y
a4
Y
a3
Y
a2
Y
a1
Y
a0
Y
b7
Y
b6
Y
b5
Y
b4
Y
b3
Y
b2
Y
b1
Y
b0
Y
a7
Y
a6
Y
a5
Y
a4
Y
a3
Y
a2
Y
a1
Y
a0
Y
b7
Y
b6
Y
b5
Y
b4
Y
b3
Y
b2
Y
b1
Y
b0
R4
R3
R2
R1
R0
G4
G3
G2
G1
G0
B4
B3
B2
B1
B0
R4
R3
R2
R1
R0
G4
G3
G2
G1
G0
B4
B3
B2
B1
B0
R4
R3
R2
R1
R0
G4
G3
G2
G1
G0
B4
B3
B2
B1
B0
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