89HPES4T4ZBBCGI Integrated Device Technology (Idt), 89HPES4T4ZBBCGI Datasheet - Page 2

• Manufacturer Part Number: 89HPES4T4ZBBCGI
• Description: PCI Express Switch 144-Pin CABGA Tray
• Manufacturer: Integrated Device Technology (Idt)

Specifications of 89HPES4T4ZBBCGI

• Package: 144CABGA
• Operating Temperature: -40 to 85 °C

Product Description
latency, and simple board layout with a minimum number of board layers. Each lane provides 2.5 Gbps of bandwidth in both directions and is fully
compliant with PCI Express Base specification 1.1.
tion layers in compliance with PCI Express Base specification Revision 1.1. The PES4T4 can operate either as a store and forward or cut-through
switch and is designed to switch memory and I/O transactions. It supports eight Traffic Classes (TCs) and one Virtual Channel (VC) with sophisticated
resource management to allow efficient switching for applications requiring additional narrow port connectivity and also some high-end connectivity.
SMBus Interface
ridden following a reset with values programmed in an external serial EEPROM. The master interface is also used by an external Hot-Plug I/O
expander. Two pins make up the SMBus master interface. These pins consist of an SMBus clock pin and an SMBus data pin.
Hot-Plug Interface
an external I/O expander, such as that used on PC motherboards, connected to the SMBus master interface. Following reset and configuration, when-
ever the state of a Hot-Plug output needs to be modified, the PES4T4 generates an SMBus transaction to the I/O expander with the new value of all of
the outputs. Whenever a Hot-Plug input changes, the I/O expander generates an interrupt which is received on the IOEXPINTN input pin (alternate
function of GPIO) of the PES4T4. In response to an I/O expander interrupt, the PES4T4 generates an SMBus transaction to read the state of all of the
Hot-Plug inputs from the I/O expander.
IDT 89HPES4T4 Data Sheet
Utilizing standard PCI Express interconnect, the PES4T4 provides the most efficient fan-out solution for applications requiring x1 connectivity, low
The PES4T4 is based on a flexible and efficient layered architecture. The PCI Express layer consists of SerDes, Physical, Data Link and Transac-
The PES4T4 contains an SMBus master interface. This master interface allows the default configuration register values of the PES4T4 to be over-
The PES4T4 supports PCI Express Hot-Plug on each downstream port. To reduce the number of pins required on the device, the PES4T4 utilizes
5 General Purpose Input/Output Pins
Option A Package: 13mm x 13mm 144-ball BGA with 1mm ball spacing
Option B Package: 10mm x 10mm 132-ball QFN with 1mm ball spacing
– Each pin may be individually configured as an input or output
– Each pin may be individually configured as an interrupt input
– Each pin has a selectable alternate function
x1
Figure 2 I/O Expansion Application
LOM
GE
Processor
2 of 30
Bridge
x1
PES4T4
North
Bridge
South
LOM
GE
Processor
x1
x1
Memory
Memory
1394
Memory
Memory
January 25, 2011