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28

Revision 3.2

Figure 4-2. Panel Power Up/Down Sequence

Table 4-3. CS9210 Registers (Power Up/Down)

Bit

Description

Index 14h

Power Up/Down Signal Delay Register (R/W)

Reset Value = 31h

7:4

Power Up Signal On Display: 4-bit value that defines the number of FP_VSYNC pulses between FP_VDDEN active and

the LCD timing signals (FLM, LP, SHFCLK, UD[11:0], and LD[11:0]) active. These bits also affect the timing of the

FP_VCONEN and DISPOFF# signals. (Refer to Figure 4-2.)

3:0

Power Down Signal Off Delay: 4-bit value that defines the number of FP_VSYNC pulses between LCD timing signals

inactive and FP_VDDEN inactive.

Index 15h

Power Up/Down LCD Enable Delay Register (R/W)

Reset Value = 23h

7:4

Power Up LCD On Delay: 4-bit value that defines the number of FP_VSYNC pulses between LCD timing signals active

and FP_VCONEN active. These bits also affect the timing of DISPOFF#. The Power Down LCD Off Delay register field

also affects the timing of FP_VDDEN. (Refer to Figure 4-2.)

3:0

Power Down LCD Off Delay: 4-bit value that defines the number of FP_VSYNC pulses between FP_VCONEN inactive

and the LCD timing signals inactive.

Index 16h

Power Up/Down Display On/Off Delay Register (R/W)

Reset Value = 12h

7:4

Power Up Display On Delay: 4-bit value that defines the number of FP_VSYNC pulses between FP_VCONEN active

and DISPOFF# active (high).

3:0

Power Down Display Off Delay: 4-bit value that defines the number of FP_VSYNC pulses between DISPOFF# inactive

(low) and FP_VCONEN inactive. These bits also affect the timing of the LCD timing signals and FP_VDDEN. (Refer to

Figure 4-2.)

Index 17h-1Fh

Reserved

00h

ENA_VDDIN

FP_VDDEN

Power Up

Signal On Delay

Power Down

Signal Off Delay

Power Up

LCD On Delay

Power Down

LCD Off Delay

FLM, LP,

SHFCLK, UD, LD

FP_VCONEN

Power Up Display

On Delay

Power Down Display

Off Delay

DISPOFF#

First FP_VSYNC after

ENA_VDDIN asserted

First FP_VSYNC after

ENA_VDDIN deasserted

Index 14h[7:4]

Index 14h[3:0]

Index 15h[7:4]

Index 15h[3:0]

Index 16h[7:4]

Index 16h[3:0]