Details Of Control Registers - Epson S1C88655 Technical Manual

4 POWER SUPPLY

4.3 Details of Control Registers

Table 4.3.1 shows the control bits of the power supply circuit.
Address Bit Name
00FF09 D7 –
–
D6 LCDON LCD driver circuit On/Off control
D5 LBIAS
LCD bias selection
D4 VCON V
D3 VC5ON
V
D2 LBON Supply voltage booster On/Off control
D1 LCDCS1
Display timing generator control
D0 LCDCS0
00FF0A D7 – –
D6 –
–
D5 – –
D4 –
–
D3 – –
V
D2 LRSEL2
ratio adjustment
D1 LRSEL1
D0 LRSEL0
00FF0B D7 – –
D6 –
–
D5 LEV5 V
D4 LEV4
D3 LEV3
D2 LEV2
D1 LEV1
D0 LEV0
R/W
R/W
LE4i.SnR/W
LEV4*Sn
30
Table 4.3.1 Power supply control bits
Function
voltage generator On/Off control
C1–4
voltage generator On/Off control
C5
LCDCS1 LCDCS0 Source clock
1 1
1 0
0 1
0 0
voltage generator resistance
C5
LRSEL2 LRSEL1 LRSEL0 Resistance ratio
1 1 1 Not allowed
1 1 0
1 0 1
1 0 0
0 1 1
0 1 0
0 0 1
0 0 0
voltage control
C5
1
–
On
1/9 bias
On
On
On
P timer 5
f /2
OSC1
f /1
OSC1
Off
–
–
–
–
–
8.69
8.13
7.20
6.46
5.60
4.84
4.06
–
–
EPSON
0 SR R/W Comment
– –
– "0" when being read
0 R/W
Off
1 R/W
1/7 bias
0 R/W
Off
0 R/W
Off
0 R/W
Off
0 R/W
0 R/W
– –
– Constantly "0" when
– –
– being read
– –
–
– –
–
– –
–
0 R/W
0 R/W
0 R/W
– –
– Constantly "0" when
– –
– being read
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
S1C88655 TECHNICAL MANUAL