Signal Definitions

32580B

 

 

Signal Definitions3

This section defines the signals and describes the external interface of the SC2200 processor. 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).

System

Interface

Memory

Interface

ACCESS.bus Interface

Parallel Port/ TFT Interface

Video Port

Interface

POR#

 

 

 

 

 

HSYNC

X32I

 

 

 

 

 

VSYNC

X32O

 

 

 

 

 

VREF

X27I

 

 

 

 

 

SETRES

X27O

 

 

 

 

 

RED, GREEN, BLUE

PCIRST#

 

 

 

 

 

 

BOOT16+ROMCS#

 

 

 

 

 

 

 

 

 

LPC_ROM+PCICLK1

 

 

 

 

IDE_ADDR2+TFTD4

TFT_PRSNT+SDATA_OUT

Straps

IDE_ADDR1+TFTD2

FPCI_MON+PCICLK0

 

 

 

 

IDE_ADDR0+TFTD3

DID0+GNT0#, DID1+GNT1#

 

 

 

 

 

 

 

 

IDE_DATA15+TFTD7

 

 

 

 

 

 

IDE_DATA14+TFTD17

MD[63:0]

 

 

 

 

 

IDE_DATA13+TFTD15

MA[12:0]

 

 

 

 

 

IDE_DATA12+TFTD13

BA[1:0]

 

 

 

 

 

IDE_DATA11+GPIO41

CS[1:0]#

AMD Geode™

 

IDE_DATA10+DDC_SCL

RASA#

 

IDE_DATA9+DDC_SDA

CASA#

SC2200

 

 

IDE_DATA8+GPIO40

WEA#

Processor

 

 

IDE_DATA7+INTD#

DQM[7:0]

 

 

 

 

 

IDE_DATA6+IRQ9

CKEA

 

 

 

 

 

IDE_DATA5+CLK27M

SDCLK[3:0]

 

 

 

 

IDE_DATA4+FP_VDD_ON

SDCLK_IN

 

 

 

 

 

IDE_DATA3+TFTD12

SDCLK_OUT

 

 

 

 

 

IDE_DATA2+TFTD14

 

 

 

 

 

 

IDE_DATA1+TFTD16

AB1C+GPIO20+DOCCS#

 

 

IDE_DATA0+TFTD6

 

 

IDE_IOR0#+TFTD10

AB1D+GPIO1+IOCS1#

 

 

 

 

IDE_IOW0#+TFTD9

GPIO12+AB2C

 

 

 

 

 

 

 

 

 

 

IDE_CS0#+TFTD5

GPIO13+AB2D

 

 

 

 

 

 

 

 

 

 

IDE_CS1#+TFTDE

 

 

 

 

 

 

 

 

 

 

 

 

IDE_IORDY0+TFTD11

ACK#+TFTDE

 

 

 

 

 

IDE_DREQ0+TFTD8

AFD#/DSTRB#+TFTD2

 

 

IDE_DACK0#+TFTD0

BUSY/WAIT#+TFTD3

 

 

IDE_RST#+TFTDCK

ERR#+TFTD4

 

 

 

 

 

IRQ14+TFTD1

INIT#+TFTD5

 

 

 

 

 

 

PD7+TFTD13

PD6+TFTD1

PD[5:0]+TFTD[11:6]

PE+TFTD14

SLCT+TFTD15

SLIN#/ASTRB#+TFTD16

STB#/WRITE#+TFTD17

VPD[7:0]

VPCKIN

CRT Interface

IDE/TFT Interface

Note: Straps are not the default signal, shown with system signals for reader convenience. However, they are also listed with the appropriate functional group.

Figure 3-1. Signal Groups

AMD Geode™ SC2200 Processor Data Book

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AMD SC2200 manual CRT Interface IDE/TFT Interface, AMD Geode, Processor, Signal Definitions 32580B