
16-14
Multimedia Registers
`efmp69030 Databook
Revision 1.3 11/24/99
MR1E/9E
Playback Control 1 Register
read/write at I/O address 3D3h with index at address 3D2h set to index 1Eh/9Eh
shared & shadowed for each playback engine at MR1E, and cross-shared for the other at MR9E
7
Playback Engine Enable
0: The video playback engine to which this register belongs is disabled. This means that
all clocks to this playback engine have been shut off, and this playback engine can be
reassigned from one pipe to another using bit 6 of this register.
1: The video playback engine to which this register belongs is enabled. This means that
all clocks to this playback engine are connected, and this playback engine should not be
reassigned from one pipe to another. This is the default after reset.
6
Playback Engine Pipeline Assignment
For playback engine 1's copy of this register:
0: Video playback engine 1 is assigned to pipeline A.
1: Video playback engine 1 is assigned to pipeline B.
For playback engine 2's copy of this register:
0: Video playback engine 2 is assigned to pipeline B.
1: Video playback engine 2 is assigned to pipeline A.
5
Playback Window Layering
This bit has effect only when both playback engines are being used on the same pipeline.
If both playback engines are being used on pipeline A:
This bit is accessible via MR1E in pipeline A's copy of the MR register set and via
MR9E in pipeline B's copy of the MR register set.
0: If the playback windows for the two playback engines ever overlap, the video
playback window for video playback engine 1 will be on top.
1: If the playback windows for the two playback engines ever overlap, the video
playback window for video playback engine 2 will be on top.
If both playback engines are being used on pipeline B:
This bit is accessible via MR1E in pipeline B's copy of the MR register set and via
MR9E in pipeline A's copy of the MR register set.
0: If the playback windows for the two playback engines ever overlap, the video
playback window for video playback engine 2 will be on top.
1: If the playback windows for the two playback engines ever overlap, the video
playback window for video playback engine 1 will be on top.
4
Playback Interlacing
0: Selects non-interlaced playback.
1: Selects interlaced playback.
3
Playback Vertical Zoom Control
0: Vertical zoom controlled normally.
1: Vertical zoom controlled via V-Zoom Register.
76543
210
PB
1
Playback
Engine En
(1)
Playback
Assign
(0)
Playback
Layering
(0)
Playback
Interlacing
(0)
Playback
V-Zoom
(0)
Playback
H-Zoom
(0)
Playback
Y-Display
(0)
Playback
H-Display
(0)
PB
2
Playback
Engine En
(1)
Playback
Assign
(0)
Playback
Interlacing
(0)
Playback
V-Zoom
(0)
Playback
H-Zoom
(0)
Playback
Y-Display
(0)
Playback
H-Display
(0)