PI7C9X130DNDE Pericom Semiconductor, PI7C9X130DNDE Datasheet - Page 145

• Manufacturer Part Number: PI7C9X130DNDE
• Description: IC PCIE-PCIX BRIDGE 1PORT 256BGA
• Manufacturer: Pericom Semiconductor

Specifications of PI7C9X130DNDE

• Applications: PCI-to-PCI Bridge
• Interface: SMBus (2-Wire/I²C)
• Voltage - Supply: 1.8V, 3.3V
• Package / Case: 256-PBGA
• Mounting Type: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Package Type: BGA
• Rad Hardened: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9 CLOCK SCHEME
10
PERICOM SEMICONDUCTOR - Confidential
INTERRUPTS
PCI Express interface:
PI7C9X130 requires 100MHz differential clock inputs through REFCLKP and REFCLKN Pins.
PCI-X / PCI interface:
To use external clock source, PI7C9X130 requires PCI-X clock (up to 133MHz) to be connected to the
Pin T6, CLKIN / M66EN. PI7C9X130 uses the CLKIN and generates seven clock outputs, CLKOUT
[6:0]. Also, PI7C9X130 requires one of the CLKOUT [6:0] (preferably CLKOUT [6]) to be connected
to FBCLKIN for the PCI-X interface logic of PI7C9X130.
To enable internal clock generator and auto frequency detection, CLKIN / M66EN needs to connect to
M66EN of a PCIX / PCI compliant device.
enable the internal clock generator and auto frequency detection. Please note that PI7C9X130 samples
CLKIN/M66EN pin continuously throughout the entire operation. If PI7C9X130 detectes 15 or more
rising edges on CLKIN/M66EN pin due to signal glitches or other reasons any time in the operation,
PI7C9X130 will switch to external clock mode immediately and stay in the mode until the chip is reset.
Therefore, it is important that CLKIN/M66EN signal be maintained in a stable state when internal clock
is used. The frequency output of CLKOUT[0:6] is determined by the state of CLKIN (M66EN),
PCIXCAP, PCIXUP and SEL100 listed as below:
The actual number of masters supported will vary depending on the loading of the PCI-X bus.
Typically, PI7C9X130 can support up to one 133MHz PCI-X slot or two 66MHz PCI-X slots.
The PI7C9X130 PCI Clock Outputs, CLKOUT [6:0], can be enabled or disabled through the
configuration register.
PI7C9X130 supports interrupt message packets on PCIe side. PI7C9X130 supports PCI interrupt
(INTA, B, C, D) pins or MSI (Message Signaled Interrupts) on PCI side. PCI interrupts and MSI are
mutually exclusive. In order words, if MSI is enabled, PCI interrupts will be disabled. PI7C9X130
support 64-bit addressing MSI.
CLKIN (M66EN)
dont care
dont care
dont care
dont care
high
high
low
low
PCIXCAP
10K to gnd
10K to gnd
Page 145 of 165
high
high
gnd
gnd
gnd
gnd
The CLK / M66EN input pin is driven high or low to
SEL100
High
high
high
high
low
low
low
low
PCI EXPRESS TO PCI-X BRIDGE
Mar 2010 - Rev 2.0
PCIX 100 Mhz
PCIX 133 Mhz
PCIX 50 Mhz
PCIX 66 Mhz
PCI 25 Mhz
PCI 33 Mhz
PCI 50 Mhz
PCI 66 Mhz
Frequency
PI7C9X130