Samsung S3C2451X User Manual page 37

S3C2451X RISC MICROPROCESSOR
Signal
RTCK
Power
VDDalive
VDDiarm
VDDi
VDDA_MPLL
VDDA_EPLL
VDD_SDRAM
VDD_SRAM
VDD_OP1
VDD_OP2
VDD_OP3
VDD_CAM
VDD_LCD
VDD_SD
VDD_RTC
VDDA_ADC
VSS
VSSA_MPLL
VSSA_EPLL
VSSA_ADC
VDD_USBOSC
VDDI_UDEV
VSSI_UDEV
VDD33
VSS33C/VSS33T
NOTES: I/O : Input/Output. AI/AO : Alalog I/O. ST : Schmitt-trigger. P : Power. G : Ground.
In/Out
O Returned Clock
P S3C2451X reset block and port status register VDD.
It should be always supplied whether in normal mode or in Sleep mode.
P S3C2451X core logic VDD for ARM core.
P S3C2451X core logic VDD for Internal block.
P S3C2451X MPLL analog and digital VDD.
P S3C2451X EPLL analog and digital VDD
P S3C2451X SDRAM I/O Power (1.8V/ 2.5V)
P S3C2451X ROM/SRAM I/O Power
P S3C2451X System I/O Power 1 (2.5 ~ 3.3V)
P S3C2451X System I/O Power 2 ( 1.8 ~ 3.3V)
P S3C2451X System I/O Power 3 ( 1.8 ~ 3.3V)
P S3C2451X Camera I/O Power (1.8 ~ 3.3V)
P S3C2451X LCD I/O Power (2.5 ~ 3.3V)
P S3C2451X SD/MMC I/O Power (1.8 ~ 3.3V)
P RTC VDD (3.0V, Input range: 2.5 ~ 3.6V)
This pin must be connected to power properly if RTC isn't used.
P S3C2451X ADC VDD(3.3V)
G S3C2451X digital ground(internal / arm / IO)
G S3C2451X MPLL analog and digital VSS.
G S3C2451X EPLL analog and digital VSS
G S3C2451X ADC VSS
P USB 2.0 Oscillator Power(1.8 ~ 3.3V)
P USB 2.0 PHY Power ( 1.2V)
G USB 2.0 PHY Ground
P USB 2.0 PHY Power ( 3.3V)
G USB 2.0 PHY Ground
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
Description
PRODUCT OVERVIEW
1-33