HPC3130A
PCI HOT PLUG CONTROLLER
SCPS055 – NOVEMBER 1999
description
The Texas Instruments HPC3130A 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 HPC3130A is to allow noninterfering hot-plug slot connection/disconnection with
the other PCI devices on the bus. The HPC3130A 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
HPC3130A 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 HPC3130A is provided below. The block diagram illustrates the HPC3130A
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.
SYSTEM INTERFACE
SLOT INTERFACE
CS
PWRON/OFF
Slot
Power I/F
Parallel
Bus
Slave
RD
WR
DATA 7–0
A 4–0
PWRFAULT
PWRGOOD
Interface
PRSNT1
PRSNT2
DETECT
Card
Detection
SDA
SCL
ADD 6–0
Serial Bus
Slave I/F
Control
and
Status
Registers
M66EN
BUSON
SYSM66EN
INTR
REQ64ON
REQ64ON
CLKON
CBT-Switch
Control
PRST
and
Slot Reset
IDLEREQ
IDLEGNT
FRAME
IRDY
SLOTRST
SLOTREQ64
Switch
Timing
ATTN0
ATTN1
Attention
Indicators
SREQ
SGNT
PCLK
2
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