SC1100 datasheet(16/348 Pages) NSC

16 / 348 page

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Revision 1.1

2.0

Signal Definitions

This section defines the signals and describes the external

interface of the SC1100. Figure 2-1 shows the signals

organized by their functional groups. Where signals are

multiplexed, the default signal name is listed first and is

separated by a plus sign (+). A slash (/) in a signal name

means that the function is always enabled and available

(i.e., cycle multiplexed).

Figure 2-1. Signal Groups

System

POR#

X32I

X27I

System

MD[63:0]

MA[12:0]

BA[1:0]

DQM[7:0]

SDCLK[3:0]

SDCLK_IN

SDCLK_OUT

ACCESS.bus

Interface

PCIRST#

IDE_ADDR[2:0]

IDE_DATA[15:0]

IDE_CS[1:0]#

IDE_RST#

X32O

X27O

Geode™

SC1100

IDE_IOR0#

IDE_IOW0#

IDE_IORDY0

IDE_DREQ0

IDE_DACK0#

Dedicated

GPIO32+LAD0

GPIO33+LAD1

GPIO34+LAD2

GPIO35+LAD3

GPIO36+LDRQ#

GPIO37+LFRAME#

GPIO39+SERIRQ

Power

Management

GPWIO[2:0]

ONCTL#

PWRBTN#

PWRCNT[2:1]

THRM#

TCK

TDI

TDO

TMS

TRST#

JTAG

POWER_EN

OVER_CUR#

DPOS_PORT1

DNEG_PORT1

DPOS_PORT2

DNEG_PORT2

DPOS_PORT3

DNEG_PORT3

USB

Interface

SIN

SOUT

GPIO7+RTS#+IDE_DACK1#

GPIO8+CTS#+IDE_DREQ1

GPIO6+DTR#/BOUT+IDE_IOR1#

GPIO11+RI#+IRQ15

GPIO9+DCD#+IDE_IOW1#

GPIO10+DSR#+IDE_IORDY1

CS[1:0]#

RASA#

CASA#

WEA#

CKEA

AB1C

AB1D

AB2C+GPIO12

AB2D+GPIO13

Serial Port

(UART) /

BIT_CLK

SDATA_OUT+CLKSEL2

SDATA_IN

SYNC+CLKSEL3

AC97_CLK

AC9T_RST#

IRRX1+GPIO16+PC_BEEP

AC97 Audio

Interface

GPIO1

GPIO18

GPIO38

GPIO47

SDTEST5+GPIO40

GPIO41

IRQ14

PCICLKO

PCICLK

INTA#, INTB#, INTD#

GPIO19+INTC#

FRAME#

PERR#

SERR#

REQ[3:0]#

GNT[3:2]#

GNT1#+CLKSEL1

A[23:0]/AD[23:0]

D[7:0]/AD[32:24]

D[11:8]/C/BE[3:0]#

D12/PAR

D13/TRDY#

D14/IRDY#

D15/STOP#

BHE#/DEVSEL#

GPIO17+IOCHRDY+IOCS0#

ROMCS#+BOOT16

GPIO20+DOCCS#

RD#+CLKSEL0

WR#

GPIO15+DOCW#+IOW#

GPIO14+IOCS1#+DOCR#+IOR#

GPIO0+TRDE#

GPIO2+F5BAR4CS#

GPIO3+F5BAR5CS#

FMUL3B

IRTX+GXCLK

PLL5B

GTEST

SDTEST[4:0]

GPIO

IDE

Interface

Sub-ISA/PCI

Bus Interface

GPIO/LPC

Bus Interface

Test and

Measurement /

Infrared

Signals

Memory

Interface

IDE Interface

/ Infrared

GNT0#+LPC_ROM

SC1100 Datasheet(PDF) 16 Page - National Semiconductor (TI)

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