I.MX27L_11 Datasheet, PDF (83/152 Pages) Freescale Semiconductor, Inc – Multimedia Applications Processor Multiple clock and power domains

Electrical Characteristics
Table 44. SLCDC Serial Interface Timing Parameters
Symbol
Parameter
t_css Chip select setup time
t_csh Chip select hold time
t_cyc Serial clock cycle time
t_cl
Serial clock low pulse
t_ch
Serial clock high pulse
t_ds
Data setup time
t_dh
Data hold time
t_rss Register select setup time
t_rsh Register select hold time
Min
(t_cyc / 2) (±) t_prop
(t_cyc / 2) (±) t_prop
39 (±) t_prop
18 (±) t_prop
18 (±) t_prop
(t_cyc / 2) (±) t_prop
(t_cyc / 2) (±) t_prop
(15 * t_cyc / 2) (±) t_prop
(t_cyc / 2) (±) t_prop
Typical Max Units
—
—
ns
—
—
ns
—
2641 ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
LCD_CLK
LCD_RS
LCD_CS
LCD_DATA[15:0]
trss trsh
tcyc
tds
tdh
command data
display data
This diagram illustrates the timing when CSPOL=0
LCD_CLK
LCD_RS
trss trsh
tcyc
LCD_CS
LCD_DATA[15:0]
tds
tdh
command data
display data
This diagram illustrates the timing when CSPOL=1
Figure 44. SLCDC Timing Diagram—Parallel Transfers to LCD Device
Table 45. SLCDC Parallel Interface Timing Parameters
Symbol
Parameter
t_cyc Parallel clock cycle time
t_ds
Data setup time
t_dh
Data hold time
Min
78 (±) t_prop
(t_cyc / 2) (±) t_prop
(t_cyc / 2) (±) t_prop
Typical Max Units
—
4923 —
—
—
—
—
—
—
i.MX27 and i.MX27L Data Sheet, Rev. 1.7
Freescale Semiconductor
83