PCI 9056 Applications
Motorola PowerQUICC Designs
The PCI 9056 is ideal for MPC 850/860-
based PowerQUICC designs that target
datacom and telecom applications such as
high-speed routers/switches, Frame Relay
adapters, WAN/LAN controllers, and
modem cards.
The PCI 9056 simplifies these designs by
providing an enhanced direct-connect inter-
face to the PowerQUICC processor family.
The flexible 3.3V, 5V tolerant I/O buffers,
combined with local bus operation up to
66MHz, are ideally suited for current and
future PowerQUICC processors.
The PCI 9056 supports the PowerQUICC
IDMA channels for data transfer between
the integrated PowerQUICC communication
channels and PCI.
In addition, the PCI 9056 exploits PLX’s
leading edge Data Pipe Architecture technol-
ogy, allowing unlimited bursts, as illustrated
in the figure below.
1
For PowerQUICC IDMA operation, the
PCI 9056 transfers data to the PCI bus under
the control of the IDMA handshake protocol
using Direct Master transfers.
2
Simultaneously, the two PCI 9056 DMA
channels run as masters on both buses to
perform bi-directional data transfers
between the local bus and the PCI bus.
This is a prime example of how the PCI
9056 gives PowerQUICC designers greater
flexibility in implementing multiple simulta-
neous I/O transfers.
Generic 32-bit, 66MHz Local Bus Designs
The PCI 9056 also supports two generic de
facto standard bus interfaces, one with
demultiplexed and the other with multi-
plexed address and data busses. Due to their
high speed and relative simplicity, these
C and J bus modes have been embraced
by designers of a wide variety of devices
including processors, DSPs, memories, cus-
tom ASICs, and FPGAs.
CompactPCI Adapters
The PCI 9056 is the ideal choice for
CompactPCI adapters in industrial, telecom,
and networking applications. These applica-
tions include WAN/LAN controllers, modem
cards, Frame Relay adapters, and telephony
cards for telecom switches and remote-
access systems.
The PCI 9056 has integrated key features
to enable live insertion and extraction of
CompactPCI Hot Swap adapters. The PCI
9056 is PICMG 2.1 r2.0 Hot Swap Silicon,
supporting Programming Interface 0 (PI=0).
It includes Bias Voltage and Early power
support for ease of Hot Swap board design.
Further, the PCI 9056 includes an option to
suppress PCI target retries during chip intial-
ization, providing the optimal behavior for
live insertion in Hot Swap systems.
The PCI 9056, with its internal PCI
arbiter, reset signal direction control, and
Type 0/1 PCI configuration support, is ideal
for CompactPCI system cards.
PCI Adapters
The PCI 9056 is also designed for traditional
PCI adapter card applications requiring 32-
bit, 66MHz PCI operation and bandwidth.
Specific applications are high performance
communications, networking, disk control,
RAID, and data encryption adapters.
Today, Power Management and Green
PCs are major initiatives in traditional PCI
applications. The PCI 9056 supports PCI
power management, including generation
of PME in the D3
COLD
state. This is a require-
ment for modem and communications
adapters in Windows 98 and 2000 systems.
Embedded Host Designs
I/O intensive embedded host designs are
another major application of the PCI 9056.
These applications include network switch-
es/routers, printer engines, set-top boxes,
CompactPCI system cards, and industrial
equipment.
While the support requirements of these
embedded host designs share many similari-
ties with peripheral card designs, there are
three significant differences:
s
A host must configure the PCI bus. The PCI
9056 supports PCI Type 0 and Type 1
configuration cycles.
s
A host must provide a PCI bus arbiter. The
PCI 9056 arbiter supports seven external
PCI masters, enough for a CompactPCI
backplane with 7 peripheral slots.
For hosts, the directions of reset and inter-
rupt signals reverse. The PCI 9056 includes
a strapping option to accomplish this. In
one setting, the directions are appropriate
for a peripheral. In the other, they are
appropriate for a host.
s
COM 1
COM 2
COM N
IDMA
1
MPC860
2
SDRAM
Flash
DMA 0
32-bit, 66MHz
Local Bus
2
DMA 1
J1
EEPROM
PCI 9056
32-bit, 66MHz PCI Bus
PCI 9056 PowerQUICC
CompactPCI Adapter
PLX [ PLX TECHNOLOGY ]
