EM65570
68COM/ 98SEG 65K Color STN LCD Driver
8.1.4 Control Register Table (Bank 5)
Pins (for 80-Family) & Bank
Address & Code
Control Register
Function
CSB RS WRB RDB RE2 RE1 RE0 D7 D6 D5 D4 D3 D2 D1 D0
Scroll top address
(Lower nibble)
[0H]
0
0
1
1
0
0
1
1
1
1
0
0
1
1
0
0
0
0
0
0
0
1
STA3STA2STA1STA0
Set scroll top address
Scroll top address
(Upper nibble)
[1H]
[2H]
STA6STA5 STA4
*
Scroll bottom
address
(Lower nibble)
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
0
1
1
1
1
0
0
0
1
0
1
SBA3SBA2SBA1SBA0
Set scroll bottom address
Scroll bottom
address
(Upper nibble)
[3H]
[4H]
[5H]
SBA6SBA5SBA4
*
Scroll specified
address
(Lower nibble)
SSA3SSA2SSA1SSA0
Set scroll specified address
Set scroll start address
Scroll specified
address
(Upper nibble)
SSA6SSA5SSA4
*
Scroll start address
(Lower nibble)
[6H]
[7H]
0
0
0
1
1
1
0
0
0
1
1
1
1
1
1
0
0
0
1
1
1
0
0
1
1
1
0
1
1
0
0
1
0
SAY3SAY2SAY1SAY0
Scroll start address
(Upper nibble)
SAY6SAY5SAY4
*
Scroll mode select [8H]
SM1 SN0 Scroll mode select
*
*
TST0: for LS1 test, Must set
to "0"
Register Access
[FH]
TS
T0
0
1
0
1
0/1 0/1 0/1
1
1
1
1
RE2 RE1 RE0
Control
RE: set register bank
number
NOTE: Address for the control register are enclosed in brackets [ ].
* Don’t Care
8.2
Functions of Control Registers
The EM65570 has many control registers. When accessing the control registers, the
upper nibble of the data bus (D7~D4) represents the register address while the lower
nibble of the data bus (D3~D0) represents data. The following figure shows an access
example. The Pins CSB, RS, RDB, & WRB) settings are for the 80-family MPU
interface. Only the setting of the terminals RDB & WRB are different when it is
accessed by the 68-family MPU.
Example (X Address):
D7
0
D6
0
D5
0
D4
0
D3
D2
D1
D0
CSB
0
RS
1
RDB WRB RE2 RE1 RE0
AX3 AX2 AX1 AX0
1
0
0
0
0
Register address
Data
Pins setting
Register Bank
Figure 8-1 An Example of Accessing the Control Registers
58 •
Product Specification (V1.0) 09.05.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
