Preliminary
S3C2451X RISC MICROPROCESSOR
PRODUCT OVERVIEW
1-33
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.
Signal In/Out
Description
RTCK
O
Returned Clock
Power
VDDalive
P
S3C2451X reset block and port status register VDD.
It should be always supplied whether in normal mode or in Sleep mode.
VDDiarm
P
S3C2451X core logic VDD for ARM core.
VDDi
P
S3C2451X core logic VDD for Internal block.
VDDA_MPLL
P
S3C2451X MPLL analog and digital VDD.
VDDA_EPLL
P
S3C2451X EPLL analog and digital VDD
VDD_SDRAM
P
S3C2451X SDRAM I/O Power (1.8V/ 2.5V)
VDD_SRAM
P
S3C2451X ROM/SRAM I/O Power
VDD_OP1
P
S3C2451X System I/O Power 1 (2.5 ~ 3.3V)
VDD_OP2
P
S3C2451X System I/O Power 2 ( 1.8 ~ 3.3V)
VDD_OP3 P
S3C2451X
System
I/O Power 3 ( 1.8 ~ 3.3V)
VDD_CAM
P
S3C2451X Camera I/O Power (1.8 ~ 3.3V)
VDD_LCD
P
S3C2451X LCD I/O Power (2.5 ~ 3.3V)
VDD_SD
P
S3C2451X SD/MMC I/O Power (1.8 ~ 3.3V)
VDD_RTC
P
RTC VDD (3.0V, Input range: 2.5 ~ 3.6V)
This pin must be connected to power properly if RTC isn't used.
VDDA_ADC P
S3C2451X ADC VDD(3.3V)
VSS
G
S3C2451X digital ground(internal / arm / IO)
VSSA_MPLL
G
S3C2451X MPLL analog and digital VSS.
VSSA_EPLL
G
S3C2451X EPLL analog and digital VSS
VSSA_ADC
G
S3C2451X ADC VSS
VDD_USBOSC
P
USB 2.0 Oscillator Power(1.8 ~ 3.3V)
VDDI_UDEV
P
USB 2.0 PHY Power ( 1.2V)
VSSI_UDEV
G
USB 2.0 PHY Ground
VDD33
P
USB 2.0 PHY Power ( 3.3V)
VSS33C/VSS33T
G
USB 2.0 PHY Ground
NOTES:
I/O : Input/Output. AI/AO : Alalog I/O. ST : Schmitt-trigger. P : Power. G : Ground.