HPC3130

PCI HOT PLUG CONTROLLER

SCPS029B – DECEMBER1998

2

POST OFFICE BOX 655303

description

The Texas Instruments HPC3130 is a peripheral component interconnect (PCI) hot-plug controller, compliant

with

PCI Hot-Plug Specification, Revision 1.0. This device supports hot insertion/removal of up to four hot-plug

slots on a PCI bus, provides a 64-bit data path in any of the four hot-plug slots, and supports 66-MHz systems

for two slots.

The primary function of the HPC3130 is to allow noninterfering hot-plug slot connection/disconnection with the

other PCI devices on the bus. The HPC3130 provides automatic bus connection sequencing and supports a

protocol for connection during bus idle conditions. It also supports an interrupt pin to report hot-plug slot events.

The interrupt event status and enable state are compliant with the

Advanced Configuration and Power Interface

(ACPI) Specification.

Internal registers may be accessed through either a two-signal serial interface or a generic parallel bus. The

serial interface slave decoding circuit supports up to eight different controllers or other serial bus devices with

the same system base. Decoding through the parallel interface supports multiple controllers with external

chip-select logic. Two double-words of configuration and control registers are provided per slot. As a result, the

HPC3130 decodes an address range of 32 bytes.

An advanced complementary metal-oxide semiconductor (CMOS) process provides low system power

consumption while operating at PCI clock rates up to 66 MHz.

functional block diagram

A simplified block diagram of the HPC3130 is provided below. The block diagram illustrates the HPC3130

functionality on a per slot basis. The SMODE chip input, not shown, is used for terminal multiplexing of the serial

and parallel bus slave interfaces.

CS

Parallel

Bus

Slave

Interface

Serial Bus

Slave I/F

Switch

Timing

Control

and

Status

Registers

Slot

Power I/F

Card

Detection

CBT-Switch

Control

and

Slot Reset

Attention

Indicators

RD

WR

DATA 7–0

A 4–0

SDA

SCL

ADD 6–0

IDLEREQ

IDLEGNT

FRAME

IRDY

SREQ

SGNT

PCLK

PWRON/OFF

PWRFAULT

PWRGOOD

PRSNT2

PRSNT1

REQ64ON

REQ64ON

CLKON

SLOTRST

SLOTREQ64

ATTN0

ATTN1

SYSM66EN

INTR

PRST

BUSON

M66EN

DETECT

SYSTEM INTERFACE

SLOT INTERFACE