STPC4EDBC datasheet(12/93 Pages) STMICROELECTRONICS

Part #	STPC4EDBC

Description	X86 Core PC Compatible Information Appliance System-on-Chip

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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PIN DESCRIPTION

12/93

Release 1.5 - January 29, 2002

Table 2-2. Definition of Signal Pins

Signal Name

Dir

Buffer Type2

Description

Qty

BASIC CLOCKS AND RESETS

SYSRSETI#

I

SCHMITT_FT

System Power Good Input

1

SYSRSTO#

O

BD8STRP_FT

System Reset Output

1

XTALI

I

ANA

14.3 MHz Crystal Input- External

Oscillator Input

1

XTALO

I/O

OSCI13B

14.3 MHz Crystal Output

1

HCLK

I/O

BD4STRP_FT

Host Clock (Test)

1

DEV_CLK

O

BT8TRP_TC

24 MHz Peripheral Clock (floppy drive)

1

DCLK

I/O

BD4STRP_FT

27-135 MHz Graphics Dot Clock

1

VDD_xxx_PLL

1

VDDCO

Power Supply for PLL Clocks

SDRAM CONTROLLER

MCLKI

I

TLCHT_TC

Memory Clock Input

1

MCLKO

O

BT8TRP_TC

Memory Clock Output

1

CS#[1:0]

O

BD8STRP_TC

DIMM Chip Select

2

CS2# / MA11

O

BD16STARUQP_TC

DIMM Chip Select / Memory Address

1

CS3# / MA12 / BA1

O

BD16STARUQP_TC

DIMM Chip Select / Memory Address /

Bank Address

1

BA[0]

O

BD8STRP_TC

Bank Address

1

MA[10:0]

O

BD16STARUQP_TC

Memory Row & Column Address

12

MD[63:49]

I/O

BD8STRUP_FT

Memory Data

15

MD[48:1]

I/O

BD8TRP_TC

Memory Data

48

MD[0]

I/O

BD8STRUP_FT

Memory Data

1

RAS#[1:0]

O

BD16STARUQP_TC

Row Address Strobe

2

CAS#[1:0]

O

BD16STARUQP_TC

Column Address Strobe

2

MWE#

O

BD16STARUQP_TC

Write Enable

1

DQM[7:0]

O

BD8STRP_TC

Data Input/Output Mask

8

PCI CONTROLLER

PCI_CLKI

I

TLCHT_FT

33 MHz PCI Input Clock

1

PCI_CLKO

O

BT8TRP_TC

33 MHz PCI O/P Clk (from internal PLL)

1

AD[31:0]

I/O

BD8PCIARP_FT

PCI Address / Data

32

CBE[3:0]

I/O

BD8PCIARP_FT

Bus Commands / Byte Enables

4

FRAME#

I/O

BD8PCIARP_FT

Cycle Frame

1

IRDY#

I/O

BD8PCIARP_FT

Initiator Ready

1

TRDY#

I/O

BD8PCIARP_FT

Target Ready

1

LOCK#

I

TLCHT_FT

PCI Lock

1

DEVSEL#

I/O

BD8PCIARP_FT

Device Select

1

STOP#

I/O

BD8PCIARP_FT

Stop Transaction

1

PAR

I/O

BD8PCIARP_FT

Parity Signal Transactions

1

SERR#

O

BD8PCIARP_FT

System Error

1

PCIREQ#[2:0]

I

BD8PCIARP_FT

PCI Request

3

PCIGNT#[2:0]

O

BD8PCIARP_FT

PCI Grant

3

PCI_INT#[3:0]

I

BD4STRUP_FT

PCI Interrupt Request

4

Note1: These pins are must be connected to the 2.5 V power supply. They must not be connected to the 3.3 V supply.

Note2: See Table 2-3 for buffer type descriptions

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