ADV7180
Bit (Shading Indicates
Default State)
User Sub Map
Address Register
Bit Description
7
6
5
4
3
2
1
0
0
1
Comments
Notes
0x4E
Interrupt Status 4
VDP_CCAPD_Q.
Closed captioning not detected
Closed captioning detected
These bits can be cleared
and masked by Register
0x4F and Register 0x50,
respectively
Reserved.
x
VDP_CGMS_WSS_CHNGD_Q. See 0x9C
Bit 4 of user sub map to determine
whether interrupt is issued for a
change in detected data or for when
data is detected regardless of content.
0
1
CGMS/WSS data is not changed/not
available
Note that an interrupt in
Register 0x4E for the
CCAP, Gemstar, CGMS,
WSS, VPS, PDC, UTC, and
VITC data is using the VDP
data slicer
CGMS/WSS data is changed/available
Reserved.
x
VDP_GS_VPS_PDC_UTC_CHNG_Q.
See 0x9C Bit 5 of User Sub Map to
determine whether interrupt is issued
for a change in detected data or for
when data is detected regardless of
content.
0
1
Gemstar/PDC/VPS/UTC data is not
changed/available
Gemstar/PDC/VPS/UTC data is
changed/available
Reserved.
x
VDP_VITC_Q.
0
1
VITC data is not available in the VDP
VITC data is available in the VDP
Reserved.
x
0x4F
Interrupt Clear 4
(Write Only)
VDP_CCAPD_CLR.
0
1
Do not clear
Note that an interrupt in
Register 0x4E for the
CCAP, Gemstar, CGMS,
WSS, VPS, PDC, UTC, and
VITC data is using the VDP
data slicer
Clears VDP_CCAPD_Q
Reserved.
0
VDP_CGMS_WSS_CHNGD_CLR.
0
1
Do not clear
Clears VDP_CGMS_WSS_CHNGD_Q
Reserved.
0
VDP_GS_VPS_PDC_UTC_CHNG_CLR.
0
1
Do not clear
Clears VDP_GS_VPS_PDC_UTC_
CHNG_Q
Reserved.
0
VDP_VITC_CLR.
0
1
Do not clear
Clears VDP_VITC_Q
Reserved.
0
0x50
Interrupt Mask 4
VDP_CCAPD_MSKB.
0
1
Masks VDP_CCAPD_Q
Note that an interrupt in
Register 0x4E for the
CCAP, Gemstar, CGMS,
WSS, VPS, PDC, UTC, and
VITC data is using the VDP
data slicer
Unmasks VDP_CCAPD_Q
Reserved.
0
VDP_CGMS_WSS_CHNGD_MSKB.
0
1
Masks VDP_CGMS_WSS_CHNGD_Q
Unmasks VDP_CGMS_WSS_
CHNGD_Q
Reserved.
0
VDP_GS_VPS_PDC_UTC_CHNG_MSKB.
0
1
Masks VDP_GS_VPS_PDC_UTC_
CHNG_Q
Unmasks VDP_GS_VPS_PDC_UTC_
CHNG_Q
Reserved.
0
VDP_VITC_MSKB.
0
1
Masks VDP_VITC_Q
Unmasks VDP_VITC_Q
Reserved.
0
0x60
VDP_Config_1
VDP_TTXT_TYPE_MAN[1:0].
0
0
1
0
1
0
PAL: Teletext-ITU-BT.653-625/50-A
NTSC: Reserved
PAL: Teletext-ITU-BT.653-625/50-B (WST)
NTSC: Teletext-ITU-BT.653-525/60-B
PAL: Teletext-ITU-BT.653-625/50-C
NTSC: Teletext-ITU-BT.653-525/60-C OR
EIA516 (NABTS)
1
1
PAL: Teletext-ITU-BT.653-625/50-D
NTSC: Teletext-ITU-BT.653-525/60-D
VDP_TTXT_TYPE_MAN_ENABLE.
WST_PKT_DECODE_DISABLE.
Reserved.
0
1
User programming of teletext type
disabled
User programming of teletext type
enabled
0
1
Enable hamming decoding of WST
packets
Disable hamming decoding of WST
packets
1
0
0
0
Rev. A | Page 101 of 112
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