M35046 Datasheet, PDF (5/40 Pages) Mitsubishi Electric Semiconductor – SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS

MITSUBISHI MICROCOMPUTERS
M35046-XXXSP/FP
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
REGISTERS DESCRIPTION
(1) Address 12016
DA Register
Status
Contents
Function
Remarks
0 Set external clock frequency value of horizontal oscillation fre- _{Set display frequency by frequency}
0
DIV0
quency.
1
value setting. Set N1 to be “N1=fOSC/
fH”.
0
1
DIV1
1
fOSC(MHz) : External clock frequency
for TCK pin (=display fre-
quency)
2
DIV2
0
10
N1 = Σ (DIVn × 2ⁿ)
n=0
1
N1: frequency value
fH(kHz) : Horizontal synchronous sig-
nal frequency for HOR pin
Set registers DIVS0, DIVS1 (address
12016), RSEL0 (address 12116) and
0
3
DIV3
1 Horizontal synchronized signal
RSEL1 (address 12216) according to
external clock frequency.
For details, see (2) Setting display fre-
0
4
DIV4
1
1H
0
External clock
5
DIV5
1
quencies under Register Supplemen-
tary Description.
Any of this settings above is reguired
only when EXCK1=1, EXCK0=1.
0
6
DIV6
1
Clock number (N1)
0
7
DIV7
1
0
8
DIV8
1
0
9
DIV9
1
0
A
DIV10
1
0 For details, see (2) Setting display frequencies under Register Set display frequency area.
B
DIVS0
Supplementary Description.
1
0
C
DIVS1
1
0 It should be fixed to “0”.
D
VJT
1 Alleviates continuous vertical jitters.
E
EXCK0 ⁰
EXCK1 EXCK0 Display clock input
0
0
20 to 30MHz
0
1
Do not set
1
0
Do not set
1
1
1
20 to 80MHz
See setting External Clock Input Mode
(to be input from the TCK terminal).
EXCK1 : address 12316
5