L64780 LSI Logic Corporation, L64780 Datasheet - Page 88

• Manufacturer Part Number: L64780
• Description: Dvb-t Cofdm Demodulator Technical Manual 2/00
• Manufacturer: LSI Logic Corporation

4.7 Mode Register Address Line 0x19
4-36
This register influences how the DTTV demodulator operates.
RES
ODRAIN_CTRL
WIRES3_CTRL
Register Descriptions
0x19
RES
7
Reserved
This bit is reserved.
Output Drain Controller
This bit allows the 3-Wire Bus pins to be set in Open
Drain Mode. When this bit is 1, the 3-wire output bus is
working in open drain (1 => Z, 0 => 0). When this bit is
0, the bus is in normal mode. The initial condition for this
bit is 1, Output Drain Mode.
The WIRES3_CTRL and ODRAIN_CTRL bits generate
the OBC_WIRE3_CTRL[2:0] 3-state control signals, as
specified in the following table.
OBC_WIRE3_OUT
3-Wire Bus 3-State Controller
When this bit is 1, the 3-Wires Bus pins are 3-stated.
When this bit is 0, the bus pins are in normal mode. The
initial condition for this bit is 0, normal mode.
ODRAIN
_CTRL
6
0
0
0
0
1
1
1
1
WIRES3
_CTRL
5
CTRL
SD_
ODRAIN_CTRL WIRE3_CTRL OUT
4
0
1
0
1
0
1
0
1
MUX_
CTRL
3
RESET
SOFT_
2
0
0
1
1
0
0
1
1
ENABLE
MODE_
AUTO_
1
CHANGE
_MODE
R/W 6
R/W 5
0
0
Z
Z
1
Z
Z
Z
0
7