參數(shù)資料
型號: SDA5251-2
廠商: SIEMENS A G
元件分類: 圖文
英文描述: ICs for Consumer Electronics
中文描述: TELETEXT DECODER, PDIP52
文件頁數(shù): 14/143頁
文件大?。?/td> 1050K
代理商: SDA5251-2
SDA 525x
Semiconductor Group
14
1998-04-08
HS/SC
VS/P4.7
CVBS
P4.0
P4.1
45
46
30
14
16
18
60
41
54
55
74
18
20
46
47
68
9
11
I
I/O
I
I/O
I/O
Horizontal sync input (alternative
sandcastle sync input) for display
Vertical sync input for display
(alternative Port 4.7)
CVBS (video signal) input
Port 4.0 is a bidirectional I/O port
with internal pullup resistors. Port 4
pins that have 1s written to them are
pulled high by the internal pullup
resistors and in that state can be
used as inputs.
Attention: P4.0 must not be kept to
‘0’ during reset, otherwise a special
test mode will be activated.
I
REF
29
59
73
67
I
Reference current input for slicer
PLLS
V
DDA
V
FIL1
SSA
28
24
58
54
72
68
66
62
S
S
Analog Supply Voltage for Slicer
and ADC
Analog Ground for Slicer and ADC
26
56
70
64
I/O
PLL loop filter I/O for TTX slicing
FIL2
27
57
71
65
I/O
PLL loop filter I/O for VPS/WSS
slicing
FIL3
25
55
69
63
I/O
PLL loop filter I/O for
TTX/VPS/WSS data slicing
LCIN
LC-OUT
38
39
7
8
52
53
44
45
I
O
LCIN and LCOUT are used to
connect the external display dot
clock frequency reference.
Table 1
Pin Functions (ROM- and ROMless-Version)
(cont’d)
Symbol
Pin No.
P-SDIP-
52-1
Pin No.
P-MQFP-
64-1
Pin No.
P-MQFP-
80-1
Pin No.
P-LCC-84-
2
Input (I)
Output (O)
Supply (S)
Function
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