ch7019 Chrontel, ch7019 Datasheet - Page 64

• Manufacturer Part Number: ch7019
• Description: Ch7019 Tv Encoder / Lvds Transmitter
• Manufacturer: Chrontel

CHRONTEL
LPCP[2:0] (bits 2-0) of register LPCPC control the LVDS PLL Charge Pump current value. The recommended settings
are shown in Table 39.
LDEN[1:0] (bits 4-3) of register LPCPC control the output drivers of LVDS output Channel A (LDC[2:0], LDC*[2:0],
LL1C and LL1C*) ,and Channel B ( LDC[6:4], LDC*[6:4], LL2C and LL2C*) per the following table:
DAS[1:0] (bits 6-5) of register OUTEN control the TV DAC (DACA and DACB ) analog switch per the following table.
Refer also to Table 12.
LVDS Output Driver Amplitude control
L1ODA[2:0] (bits 2-0) of register LODA control the Output Driver Amplitude for LVDS Bank 1. See Table 36 below.
L2ODA[2:0] (bits 5-3) of register LODA control the Output Driver Amplitude for LVDS Bank 2. See Table 36 below.
LODPE (bit 6) of register LODA controls LVDS Output Driver Pre-Emphasis for both LDC[6:4] and LDC[2:0] by
simultaneous Pull-up and Pull-down diode currents.
64
DEFAULT:
SYMBOL:
TYPE:
BIT:
Table 34: LVDS Output Drivers Enable
Table 35: TV DAC Analog Switch Control
Table 36: LVDS Output Driver Amplitude
LDEN1
DAS1
0
0
1
1
LxODA2
LODP
R/W
1
0
0
1
1
7
0
0
0
0
1
1
1
1
LDEN0
DAS0
0
1
0
1
LODPE L2ODA2 L2ODA1 L2ODA0 L1ODA2 L1ODA1 L1ODA0
LxODA1
R/W
0
1
1
6
1
0
0
0
1
1
0
0
1
1
Both LVDS Channel A and B are Off
LVDS Channel A is ‘On’ and B is ‘Off’
LVDS Channel A is ‘Off’ and B is ‘On’
Both LVDS Channel A and B are ‘On’
DACA path
Off
Off
On
On
Description
LxODA0
R/W
5
0
0
1
0
1
0
1
0
1
Output Driver Amplitude (mV)
DACB path
Off
On
Off
On
R/W
4
0
305
285
265
245
225
410
370
330
R/W
3
0
Symbol:
Address:
Bits:
201-0000-048
R/W
2
0
R/W
LODA
74h
8
Rev. 2.4, 12/18/2006
1
0
CH7019B
R/W
0
0