1995 Nov 27
15
Philips Semiconductors
Product specification
Stand-alone OSD
PCA8514
9
COMMANDS
The PCA8514 is programmed by a series of commands sent by a microcontroller via the I
2
C-bus interface or the
High-speed serial interface. 16 commands (Commands 0 to G) are available for selecting the various functions of the
PCA8514. A command overview is shown in Table 8; full descriptions of each command are given in Sections 9.1 to 9.15.
Table 8
Command overview (note 1)
Note
1.
‘X’ denotes don’t care state.
COMMAND
BS1
BS0
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
Command Bank selection
Not used in the PCA8514
Character attributes
Display Character Address High
Display Character Address Low
Character font selection - Bank 2
OSD PLL oscillator divisor
Scan mode, polarity of FB, ACM, R, G,
B and I; OSD enable/disable
Polarity of HSYNC and VSYNC,
Display mode
Blinking frequency, blinking frequency
active ratio
I/O port selection
Vertical start position High
Vertical start position Low/ Horizontal
start position High
Horizontal start position Low
Write to ports P00, P01 and P04
Background colour in Frame
shadowing mode
Enable/disable OSD horizontal
stabilization circuit (Regen H),
selection of Half-tone background
mode and character size of first line
X
0
X
0
0
1
0
0
X
0
0
0
0
0
1
1
0
1
0
0
0
1
0
0
1
0
0
0
1
0
1
1
1
1
0
BS1
T1
A5
A1
C1
D1
Bp
BS0
T0
A4
A0
C0
D0
EN
T4
0
1
C4
D4
0
T3
A7
A3
C3
D3
M1
T2
A6
A2
C2
D2
M0
C6
0
1
C5
D5
0
8
0
1
0
1
0
1
Hp
Vp
S1
S0
9
0
1
0
1
1
0
BF1
BF0
BR1
BR0
A
B
C
0
0
0
1
1
1
0
1
1
1
0
0
1
0
1
1
1
0
0
A/P
V4
V0
0
0
V5
V1
V3
H5
V2
H4
D
E
F
0
0
0
1
1
0
1
1
0
0
1
1
1
X
0
1
H3
X
R
H2
X
G
H1
P01
B
H0
P00
I
P04
0
G
0
0
0
1
0
1
HM3
HT2
FS1
FS0