Application Brief
AB5200
AB5200
Interfacing the VP310/SNIM3 to MPEG Decoders
Application Brief
Introduction
DS5200
ISSUE 1.1
July 1999
MPEG decoders from various manufactures have different implementations of the tuner interface with dissimilar pin names for
a given function, or in some cases, no pin at all for a particular function. This application brief is intended to assist designers using
the Zarlink Semiconductor VP310/VP311 Satellite Channel Decoder and/or the SNIM3 reference decoder design, when
connecting to various MPEG decoders.
The Tuner Interface
Signal
Name
Pin Nos
VP310
SNIM3
Dir
Notes
ST
⇐
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇐
Use as required with
other devices (if any)
on the tuner interface
Invert via software
if necessary
LSI
MPEG
NEC
OAK
8211
RESET
STATUS
49
52
7
9
Reset at power-up
Software
Programmable
Open-drain output
Rising edge centre
data
CK_IN
CCLK
STPCLK
PSTB1‡
IRQ
MOCLK
57
58
10
11
MDO0
MDO1
MDO2
MDO3
MDO4
MDO5
MDO6
MDO7
MOVAL
BKERR
59
61
63
64
65
66
68
69
72
75
13
15
17
19
21
23
25
27
32
31
D0
D1
D2
D3
D4
D5
D6
D7
D/P
ERROR†
CDATA0
CDATA1
CDATA2
CDATA3
CDATA4
CDATA5
CDATA6
CDATA7
CVALID
CERR
STPDAT0
STPDAT1
STPDAT2
STPDAT3
STPDAT4
STPDAT5
STPDAT6
STPDAT7
STPEN
STPERRB
HOST_DATA8
HOST_DATA9
HOST_DATA10
HOST_DATA11
HOST_DATA12
HOST_DATA13
HOST_DATA14
HOST_DATA15
PSTB1‡
MOSTRT
MDOEN
76
71
29
33
STR_IN
STPSTRT
Notes † BKERR inverted to BKERR (for ST) by setting bit -6 of register 96
d
(from 51
d
default to 115
d
)
‡ MOCLK and MOVAL are ANDed togethet to provide the qualified clock for PSTB1.
1
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