Casio QT-6100 Service Manual page 64

PIN NAME I/O
External Display Memory Interface
MA [9:0] External Memory Address Bus. The video memory row and column addresses are multiplexed on these
O
lines.
MD [63:0] I/O External Memory Data Bus
~WE O External Memory Write Strobe
~RAS O External Memory SDRAM Row Address Select
~CAS O External SGRAM Column Address Select
~CS0 External SGRAM Chip Select 0, select 1st 1MB within the 2MB memory, or select 1st 2MB within the 4MB
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memory
~DQM External SGRAM I/O mask [7:0]. DQM [7:0] are byte specific. DQM0 masks MD [7:0], DQM1 masks MD [15:8],
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[7:0] ...,and DQM7 masks MD [63:58].
DSF O External SGRAM Block write
BA External SGRAM Bank Select. SDRAM has dual internal banks. Bank address defines to which bank the
O
current command is being applied.
SDCK I/O External SGRAM clock. SDCK is driven by the memory clock. All SDRAM input signals are sampled on the
positive edge of SDCK.
SDCKEN External SGRAM clock enable. SDCKEN activates (HIGH) and deactivates (LOW) the SDCLK signal.
I/O
Deactivating the SDCK provides POWER-DOWN and SELF-REFRESH mode.
~ROMEN O ROM Enable
Flat Panel Interface
FDATA Flat Panel Data bit 23 to bit 0. Note: For SM712, the upper 12 bits [25:24] are multiplexed with ZV port, and
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[23:0] the upper 12 bits [23:11] are dedicated for flat panel data
LP/FHSYNC DSTN LCD: Line Pulse
O
TFT LCD: LCD Horizontal Sync
FP/FVSYNC DSTN LCD: Frame Pulse
O
TFT LCD: LCD vertical sync
M/ M-signal or Display Enable. This signal is used to indicate the active horizontal display time.
DE FPR3E [7] is used to select
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1 = M-signal
0 = Display Enable
FPSCLK O Flat Panel Shift Clock. This is the pixel clock for Flat Panel Data.
Flat Panel Enable. This signal needs to become active after all panel voltages, clocks, and data are sup-
FPEN O plied. This signal also needs to become inactive before any panel voltages or control signals are removed.
FPEN is part of the VESA FPDI-1B specification.
FPVDDEN O Flat Panel VDD Enable. This signal is used to control LCD logic power.
VBIASEN O Flat Panel Voltage Bias Enable. This signal is used to control LCD Bias power.
DESCRIPTION
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