m35046 Renesas Electronics Corporation., m35046 Datasheet - Page 6

• Manufacturer Part Number: m35046
• Description: Screen Character And Pattern Display Controllers
• Manufacturer: Renesas Electronics Corporation.

REGISTERS DESCRIPTION
(1) Address 120
DA
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
Register
EXCK0
DIVS0
DIVS1
DIV10
DIV0
DIV1
DIV2
DIV3
DIV4
DIV5
DIV6
DIV7
DIV8
DIV9
VJT
16
Status
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Set external clock frequency value of horizontal oscillation fre-
quency.
N1 =
N1: frequency value
For details, see (2) Setting display frequencies under Register
Supplementary Description.
It should be fixed to “0”.
Alleviates continuous vertical jitters.
E x t e r n a l c l o c k
H o r i z o n t a l s y n c h r o n i z e d s i g n a l
EXCK1
0
0
1
1
n = 0
10
(DIVn
EXCK0
0
1
0
1
C l o c k n u m b e r ( N 1 )
2
Display clock input
n
)
20 to 30MHz
20 to 80MHz
1 H
Do not set
Do not set
Contents
Function
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
MITSUBISHI MICROCOMPUTERS
Set display frequency by frequency
value setting. Set N1 to be “N1=f
fH”.
Set registers DIVS0, DIVS1 (address
120
RSEL1 (address 122
external clock frequency.
For details, see (2) Setting display fre-
quencies under Register Supplemen-
tary Description.
Any of this settings above is reguired
only when EXCK1=1, EXCK0=1.
Set display frequency area.
See setting External Clock Input Mode
(to be input from the TCK terminal).
EXCK1 : address 123
M35046-XXXSP/FP
f
f
OSC
H
(kHz) : Horizontal synchronous sig-
16
(MHz) : External clock frequency
), RSEL0 (address 121
nal frequency for HOR pin
for TCK pin (=display fre-
quency)
Remarks
16
16
) according to
16
) and
OSC
/
5