Preliminary
PRODUCT OVERVIEW
S3C2451X RISC MICROPROCESSOR
1-30
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
RGB_VSYNC/SY
S_CS1
O
RGB I/F Vertical Sync. Signal
i80 I/F Sub LCD Select
RGB_HSYNC/
SYS_CS0
O
RGB I/F Horizontal Sync. Signal
i80 I/F Main LCD Select
RGB_VDEN/
SYS_RS
O
RGB I/F Data Enable
i80 I/F Register/ State select
RGB_LEND/
SYS_OE
O
RGB I/F Line End Signal
i80 I/F Output Enable
CAMERA Interface
CAMRESET
O
Camera interface reset
CAMCLKOUT
O
Camera interface master clock
CAMPCLK
I
Camera interface pixel clock
CAMHREF
I
Camera interface horizontal sync
CAMVSYNC
I
Camera interface horizontal sync
CAMDATA[7:0]
I
Camera interface data
CAM_FIELD_A
I
Interlace field (only used in interlace mode)
Interrupt Control Unit
EINT[23:0]
I
External interrupt request
External I/F
nXDREQ[1:0]
I
External DMA request
nXDACK[1:0]
O
External DMA acknowledge
nXBREQ
I
nXBREQ (Bus Hold Request) allows another bus master to request control of
the local bus. nXBACK active indicates that bus control has been granted.
nXBACK
O
nXBACK (Bus Hold Acknowledge) indicates that the S3C2451X has
surrendered control of the local bus to another bus master.
UART
RXD[3:0] I
UART
receives data input (ch. 0/1/2)
TXD[3:0]
O
UART transmits data output (ch. 0/1/2)
nCTS[2:0]
I
UART clear to send input signal (ch. 0/1)
nRTS[2:0]
O
UART request to send output signal (ch. 0/1)
EXTUARTCLK
I
External clock input for UART
TSADC
AIN[9:0]
AI
ADC input [9:0]. If do not use ADC function, AIN [9] and AIN [7] pins are tied
to VDDA_ADC. Others are tied to GND.
When touch screen device is used, A[6], A[7] , A[8] and A[9] are used as YM,
YP, XM and XP, respectively.
Vref
AI
ADC reference voltage
IIC-Bus
IICSDA
IO
IIC-bus data