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SED1374 Datasheet, PDF (385/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller | |||
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EPSON Research and Development
Vancouver Design Center
Page 11
The âGeneric #1â host interface control signals of the SED1374 are asynchronous with respect to
the SED1374 bus clock. This gives the system designer full flexibility to choose the appropriate
source (or sources) for CLKI and BCLK. The choice of whether both clocks should be the same, and
whether to use DCLKOUT (divided) as clock source, should be based on the desired:
⢠pixel and frame rates.
⢠power budget.
⢠part count.
⢠maximum SED1374 clock frequencies.
The SED1374 also has internal clock dividers providing additional flexibility.
3.2 IT8368E Configuration
The IT8368E provides eleven multi-function IO pins (MFIO). The IT8368E must have both âFix
Attribute/IOâ and âVGAâ modes on. When both these modes are enabled, the MFIO pins provide
control signals needed by the SED1374 host bus interface, and a 16M byte portion of the system PC
Card attribute and IO space is allocated to address the SED1374. When accessing the SED1374 the
associated card-side signals are disabled in order to avoid any conflicts.
For mapping details, refer to section 3.3: âMemory Mapping and Aliasing.â For connection details
see Figure 3-1: âSED1374 to PR31500/PR31700 Connection Using an IT8368E,â on page 10. For
further information on the IT8368E, refer to the IT8368E PC Card/GPIO Buffer Chip Specification.
Note
When a second IT8368E is used, that circuit should not be set in VGA mode.
Interfacing to the Philips MIPS PR31500/PR31700 Processor
Issue Date: 98/11/09
SED1374
X26A-G-012-01
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