TSI148-133CL IDT, Integrated Device Technology Inc, TSI148-133CL Datasheet - Page 20

• Manufacturer Part Number: TSI148-133CL
• Description: IC PCI-VME BRIDGE 456PBGA
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: Tsi148&Trade;r

Specifications of TSI148-133CL

• Applications: PCI-to-VME Bridge
• Interface: PCI
• Voltage - Supply: 3.3V
• Package / Case: 456-PBGA
• Mounting Type: Surface Mount
• Package Type: BGA
• Rad Hardened: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 800-1906

Bit Ordering Notation
When referring to PCI/X transactions, this document assumes the most significant bit is the
largest number (also known as little-endian bit ordering). For example, the PCI address/data
bus consists of AD[31:0], where AD[31] is the most significant bit and AD[0] is the
least-significant bit of the field.
Both bits and bytes have an ordering convention. The bit ordering convention for the PCI bus
interface is little-endian bit ordering in which bit 0 is the least significant bit. The byte
ordering convention of the PCI bus is little-endian. Byte 0 represents the least significant data
bits of the word. This corresponds to the bit and byte ordering convention of the PCI bus. PCI
is consistent in the bit and byte ordering.
The bit ordering convention for the VMEbus interface is little-endian bit ordering in which bit
0 is the least significant bit. The byte ordering convention is big-endian. Byte 0 represents the
most significant bits of the word. This corresponds to the bit and byte ordering convention of
the VMEbus. The VMEbus is not consistent in the bit and byte ordering.
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Tsi148 PCI/X-to-VME Bus Bridge User Manual
80A3020_MA001_13