Epson Research and Development
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Vancouver Design Center
Hardware Functional Specification
S1D13704
Issue Date: 01/02/08
X26A-A-001-04
13.6 Clock Requirements
The following table shows what clock is required for which function in the S1D13704.
Table 13-5: S1D13704 Internal Clock Requirements
Function
BCLK
CLKI
Register Read/Write
Is required during register accesses. BCLK
can be shut down between accesses: allow
eight BCLK pulses plus 12 MCLK pulses
(8T
BCLK
+ 12T
MCLK
) after the last access
before shutting BCLK off. Allow one BCLK
pulse after starting up BCLK before the next
access
Not Required
Memory Read/Write
Is required during memory accesses. BCLK
can be shut down between accesses: allow
eight BCLK pulses plus 12 MCLK pulses
(8T
BCLK
+ 12T
MCLK
) after the last access
before shutting BCLK off. Allow one BCLK
pulse after starting up BCLK before the next
access
Required
Software Power Save
Required
Can be stopped after 128 frames from
entering Software Power Save, i.e. after
REG[03h] bits 1-0 = 11
Hardware Power Save
Not Required
Can be stopped after 128 frames from
entering Hardware Power Save
*