PXD20RM Datasheet, PDF (1162/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

31.4.53 VGV3_CONTROL
Offset: 0x70
Access: User write
Field
31–24
23–21
20
19
18
17
16
15–12
11–0
Reset
Description
0x0 Reserved
0x0 DMIWAITBUF. If set: pause stream reading until the given frame buffer (one hot encoded) is free
0x0 V0SYNC. If set: pause stream reading until sync signal received from V0
BCFLUSH. If set: flush burst cache (full flush). Should be used when the command buffer(s) added with
0x0 this control write use old memory that may potentially be in cache. Can also be used to trigger flushes
when textures etc are changed.
0x0
WRITE. If set: write current stream address to location given by VGV3_WRITEADDR (can be used for
polling state)
0x0 ABORT. If set: abort stream reading immediately (should not be used in normal operation)
0x0 PAUSE. If set: pause stream reading after next marked packet
0x0
DMIWAITCHMASK. Selects DMI channels which are checked for free buffer when non-zero DMIWAIT-
BUF is given
MARKADD. Increment mark counter by this value. Mark counter tells how many undread marked packets
0x0 are in the stream. Stream reading continues as long as mark counter is positive (and reading is not
paused).
31.4.54 VGV3_MODE
Offset: 0x71
Access: User write
Field Reset
Description
31–5
4
3
2
1
0
0x0 Reserved
0x0 DMIRESET. If set, reset state of DMI interface (should not be needed)
0x0
DMIPAUSETYPE. If set, also input regwrites are blocked (in addition to stream reading) when V0SYNC or
DMIWAITBUF is set in VGV3_CONTROL (normally allways set to 0)
0x0
WRITEFLUSH. If set memory writes are done straight to L2 to make sure they arrive to memory as soon
as possible.
0x0 UNUSED
0x0 FLIPENDIAN. Flip dwords read from memory from big-endian to little-endian
31.4.55 VGV3_WRITEADDR
Offset: 0x72
Access: User write
Field
31–0
Reset
Description
0x0
Address where all status writes happen. Normally a single shared address used by the driver should be
sufficient, but it is also possible to change this address in the data stream.
31-30
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor