Graphics ClientM User Manual
110120-1000A
50
The following table lists the standard and volume production options for the display and
backlight interfaces.
Symbol
Parameter
Standard
Production
Units
LCD (note 14)
V
PNL_PWR
LCD supply voltage (note 15)
5
3.3
V
V
PNL_DATA
Display signal voltage (note 16, 17)
3.3
5
V
Scan Direction (active displays)
R
PNL_RL
Pull-up/down resistance on PNL_RL
(note 18)
4.7
4.7
kΩ
V
PNL_RL
V
PNL_PWR
0
V
R
PNL_UD
Pull-up/down resistance on PNL_UD
(note 19)
4.7
4.7
kΩ
V
PNL_UD
V
PNL_PWR
0
V
Backlight
V
BKLT_PWM
PWM control (note 20)
0-5
0-3.3, 0-V_IN
V
Notes:
14. The PXA320 enables the display power and display signal buffer.
15. Resistor R121 selects 5 V power, while R120 selects 3.3 V.
16. Inductor L10 selects 3.3 V signal levels, while L11 selects 5 V.
17. A standard GCM is configured for 3.3 V display signal voltage levels.
5 V displays with VIH <= 0.6
VPNL_PWR (3.0 V) will work reliably with 3.3 V data.
18. PNL_RL is pulled high by R54, while R57 pulls the signal low.
19. PNL_UD is pulled high by R55, while R58 pulls the signal low.
20. Support for backlight PWM control at 3.3 V and V_IN are available as volume production
options.
Summary of Contents for PXA320
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