Samsung S3C6400X, User Manual, Page: 32 / 1189

PRELIMINARY
S3C6400
RISC MICROPROCESSOR PRODUCT OVERVIEW
1-29
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.
XhiWEn I I IO O IO XhiWEn XEINT[26] DATA_CF[13] IOWR_CF GPM[3]
XhiOEn I I IO I IO XhiOEn XEINT[27] DATA_CF[14] IORDY_CF GPM[4]
XhiINTR O IO IO XhiINTR DATA_CF[15] GPM[5]
XhiADDR[2:0] I O O IO IO XhiADDR[2:0] XkpCOL[2:0] ADDR_CF[2:0] GPL[2:0]
XhiADDR[7:3] I O IO IO XhiADDR[7:3] XkpCOL[7:3] GPL[7:3]
XhiADDR[8] I I O O IO XhiADDR[8] XEINT[16] CE_CF[0] GPL[8]
XhiADDR[9] I I O I IO XhiADDR[9] XEINT[17] CE_CF[1] GPL[9]
XhiADDR[10] I I O I IO XhiADDR[10] XEINT[18] IORD_CF GPL[10]
XhiADDR[11] I I O I IO XhiADDR[11] XEINT[19] IOWR_CF GPL[11]
XhiADDR[12] I I I IO XhiADDR[12] XEINT[20] IORDY_CF GPL[12]
XhiDATA[0] IO O IO IO IO XhiDATA[0] XhrxREADY DATA_CF[0] DATA_CF[0] GPK[0]
XhiDATA[1] IO I IO IO IO XhiDATA[1] XhrxWAKE DATA_CF[1] DATA_CF[1] GPK[1]
XhiDATA[2] IO I IO IO IO XhiDATA[2] XhrxFLAG DATA_CF[2] DATA_CF[2] GPK[2]
XhiDATA[3] IO I IO IO IO XhiDATA[3] XhrxDATA DATA_CF[3] DATA_CF[3] GPK[3]
XhiDATA[4] IO I IO IO IO XhiDATA[4] XhtxREADY DATA_CF[4] DATA_CF[4] GPK[4]
XhiDATA[5] IO O IO IO IO XhiDATA[5] XhtxWAKE DATA_CF[5] DATA_CF[5] GPK[5]
XhiDATA[6] IO O IO IO IO XhiDATA[6] XhtxFLAG DATA_CF[6] DATA_CF[6] GPK[6]
XhiDATA[7] IO O IO IO IO XhiDATA[7] XhtxDATA DATA_CF[7] DATA_CF[7] GPK[7]
XhiDATA[15:8] IO I IO IO XhiDATA[15:8] XkpROW[7:0] DATA_CF[15:8] GPK[15:8]
XhiDATA[16
]
IO I IO IO XhiDATA[16] XEINT[21] DATA_CF[8] GPL[13]
XhiDATA[17
]
IO I IO IO XhiDATA[17] XEINT[22] DATA_CF[9] GPL[14]
Signal I/O Description
XhiCSn I Chip select, driven by the Modem chip
XhiCSn_main I Chip select for LCD bypass main, driven by the Modem chip
XhiCSn_sub I Chip select for LCD bypass sub, driven by the Modem chip
XhiWEn I
Write enable, driven by the Modem chip
XhiOEn I
Read enable, driven by the Modem chip
XhiINTR O Interrupt request to the Modem chip
XhiADDR[12:0] I Address bus, driven by the Modem chip
XhiDATA[17:0] IO Data bus, driven by the Modem chip
XEINT[27:16] I External interrupts
XkpCOL[7:0] O Keypad interface column outputs
XhrxREADY O
The READY-signal indicates that the transmission of a new physical layer frame can
begin. (Modem to Application Processor)
XhrxWAKE I
The WAKE-signal is used to indicate to the receiver that the transmitter is willing to
start a transmission. (Modem to Application Processor)