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Epson Research and Development Page 85
Vancouver Design Center
Hardware Functional Specification S1D13705
Issue Date: 02/02/01 X27A-A-001-10
13.6 Clock Requirements
The following table shows what clock is required for which function in the S1D13705
Table 13-5: S1D13705 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
Look-Up Table Register
Read/Write
Is required during LUT 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
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