NEC µPD72257 Preliminary User's Manual page 184

Chapter 6
6.10.2.12
Access
Address
Initial Value
31 30 29 28
0 0 0 0
R R R R
15 14 13 12
0 0
R R
Bit Bit name
13 to 8 FFUSEDW[5:0] Number of words in FIFO
7 VIIDLE
6 FIELD
5 VSYNC
4 HSYNC
1 START2PEND
0 START1PEND
184
VInSTATUS - Video Input status register
This register summarizes all status information for the Video Input.
This register can be read in 32-bit units.
<VIn_Base> + 20
H
0000 0000 0000 0000 00XX XXXX XXXX 00XX
reset.
27 26 25 24
0 0 0 0
R R R R
11 10 9 8
FFUSEDW[5:0]
R
Function
Operation status of Video Input
0 capture operation active
1 idle
Current status of the internal field signal
0 first field
1 second field
Current status of the internal VSYNC signal
0 not active
1 active
Current status of the internal HSYNC signal
0 not active
1 active
New address in VInSTARTADDR2 for second field pending
0 new VInSTARTADDR2 effective
1 new VInSTARTADDR2 not yet effective
New address in VInSTARTADDR1 for first field pending
0 new VInSTARTADDR1 effective
1 new VInSTARTADDR1 not yet effective
Preliminary User's Manual S19203EE1V3UM00
Video Input (Ravin-M only)
. This register is initialized by any
B
23 22 21 20
0 0 0 0
R R R R
7 6 5 4
VI V H
FIELD
IDLE SYNC SYNC
R R R R
19 18 17 16
0 0 0 0
R R R R
3 2 1 0
STAR STAR
0 0 T2 T1
PEND PEND
R R R R