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S1D13705 Interfacing to the Philips MIPS PR31500/PR31700 Processor
X27A-G-012-02 Issue Date: 01/02/13
Figure 5-1: S1D13705 to PR31500/PR31700 Connection Using an IT8368E
Note
See Section 3.1 on page 9 and Section 3.2 on page 10 for Generic #1 pin descriptions.
The “Generic #1” host interface control signals of the S1D13705 are asynchronous with
respect to the S1D13705 bus clock. This gives the system designer full flexibility to c hoose
the appropriate source (or sources) for CLKI and BCLK. The choice of whether b oth 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 S1D13705 clock frequencies.
The S1D13705 also has internal clock dividers providing additional flexibility.
IT8368E
S1D13705
HA[12:0] AB[12:0]
HD[31:24] DB[7:0]
LHA[23]/MFIO[10] WE1#
WE0#
RD/WR#
RD#
CS#
LHA[22]/MFIO[9]
LHA[21]/MFIO[8]
LHA[20]/MFIO[7]
LHA[19]/MFIO[6]
WAIT#
/CARDxWAIT
RESET#
AB[16:13]
PR31500/PR31700
HD[23:16] DB[15:8]
DCLKOUT
ENDIAN
System RESET
LHA[16:13]/
Oscillator
...or...
pull-up
VDD
BCLK
CLKI
See text
Clock divider
BS#
IO VDD, CORE VDD
+3.3V
MFIO[3:0]
Note:
When connecting the S1D13705 RESET# pin, the system designer should be aware of all
conditions that may reset the S1D13705 (e.g. CPU reset can be asserted during wake-up
from power-down modes, or during debug states).