TMC22191 CADEKA [Cadeka Microcircuits LLC.], TMC22191 Datasheet - Page 21

• Manufacturer Part Number: TMC22191
• Description: Digital Video Encoders/Layering Engine
• Manufacturer: CADEKA [Cadeka Microcircuits LLC.]

PRODUCT SPECIFICATION
Control Register Definitions
Timing Register (18)
Timing Registers (19-1E)
Timing Register (1F)
Reg
18
18
18
18
Reg
19
1A
1B
1C
1D
1E
Reg
1F
1F
7
7
Bit
7-6
5-4
3-2
1-0
Bit
7-0
7-0
7-0
7-0
7-0
7-0
Bit
7-5
4-0
XBP
Name
XBP
VA
VC
VB
Name
FP
EL
EH
SL
SH
CBL
Name
FIELD
LTYPE
FIELD
6
6
Function
Extended color back porch 2 MSBs. These two bits hold the MSBs of a 10-bit
value extending from 0 to 1023 PCK cycles. The LSBs are located in control
register 14.
Active video 2 MSB. These two bits hold the MSBs of a 10-bit value extending
from 0 to 1023 PCK cycles. The LSBs are located in control register 15.
Active video start 2 MSBs. These two bits hold the MSBs of a 10-bit value which
is the initial half active video length extending from 0 to 1023 PCK cycles. The
LSBs are located in control register 16.
Active video end 2 MSBs. These two bits hold the MSBs of a 10-bit value which
is the end half active video length extending from 0 to 1023 PCK cycles. The
LSBs are located in control register 17.
Function
Front porch length. This 8-bit register holds a value extending from 0 to 255
PCK cycles.
Equalization pulse LOW length. This 8-bit register holds a value from 0 to 255
PCK cycles.
Equalization pulse HIGH length. This 8-bit register holds a value extending from
0 to 255 PCK cycles. This value, when added to 256 (or 512), determines the
final pulse length in the range of 256 to 511 (or 767) PCK cycles.
Vertical sync LOW length. This 8-bit register holds a value from 0 to 255 PCK
cycles. This value, when added to 256 (or 512), determines the final pulse
length in the range of 256 to 511 (or 767) PCK cycles.
Vertical sync HIGH length. This 8-bit register holds a value extending from 0 to
255 PCK cycles.
Color bar length. This 8-bit register holds a value which is the length of each
color bar displayed extending from 0 to 255 PCK cycles.
Function
Field identification (read only). These three bits are updated 12 PXCK periods
after each VHSYNC. They allow the user to determine field type on a
continuous basis.
Line type identification (read only). These five bits are updates 5 PXCK periods
after each VHSYNC. They allow the user to determine line type on a continuous
basis.
5
5
VA
(continued)
4
4
3
3
VC
LTYPE
2
2
1
1
TMC22091/TMC22191
VB
0
0
21