S1D13705 Epson Electronics America, Inc., S1D13705 Datasheet - Page 340

• Manufacturer Part Number: S1D13705
• Description: S1d13705 Embedded Memory Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 20
3.4.2 S1D13705 Hardware Configuration
3.4.3 MC68EZ328 Chip Select Configuration
S1D13705
X27A-G-007-04
CNF2
Pin Name
CNF0
CNF1
CNF2
CNF3
S1D1370
0
0
0
0
1
1
1
1
1
1
5
The S1D13705 uses CNF3 through CNF0 and BS# to allow selection of the bus mode and
other configuration data on the rising edge of RESET#. Refer to the S1D13705 Hardware
Functional Specification, document number X27A-A-001-xx for details.
The tables below show those configuration settings important to the Generic #1 host bus
interface.
The S1D13705 requires a 128K byte address space for the display buffer and its internal
registers. To accommodate this block size, it is preferable (but not required) to use one of
the chip selects from groups A or B. Groups A and B can have a size range of 128K bytes
to 16M bytes and groups C and D have a size range of 32K bytes to 16M bytes. Therefore,
any chip select other than CSA0 would be suitable for the S1D13705 interface.
In the example interface, chip select CSB0 is used to control the S1D13705. A 128K byte
address space is used with the S1D13705 control registers mapped into the top 32 bytes of
the 128K byte block and the 80K bytes of display buffer mapped to the starting address of
the block. The chip select should have its RO (Read Only) bit set to 0, its BSW (Bus Data
= configuration for MC68EZ328 using Generic #1 host bus interface
Little Endian
= configuration for MC68EZ328 support
value on this pin at the rising edge of RESET# is used to configure: (1/0)
CNF1
0
0
1
1
0
0
1
1
1
1
Table 3-2: Summary of Power-On/Reset Options
Table 3-3: Host Bus Interface Selection
See Table 2-3: “Host Bus Interface Selection”
0
CNF0
0
1
0
1
0
1
0
0
1
1
BS#
X
X
X
X
X
X
0
1
0
1
Interfacing to the Motorola ‘Dragonball’ Family of Microprocessors
Big Endian
SH-4 interface
SH-3 interface
reserved
MC68K #1, 16-bit
reserved
MC68K #2, 16-bit
reserved
reserved
Generic #1, 16-bit
Generic #2, 16-bit
Host Bus Interface
1
Epson Research and Development
Vancouver Design Center
Issue Date: 01/02/13