SE7210TP1-E Datasheet, PDF (43/145 Pages) Intel Corporation – Intel® Server Board Technical Product Specification

Intel® Server Board SE7210TP1-E TPS
Functional Architecture
z PCI/PCI-X target latency of 16 clocks maximum for first target access cycle that
transfers data and 8 clocks for other responses
z Supports wire interrupts and Message-Signaled Interrupts (MSI)
z Hardware-implemented endian support for command and scatter/gather data transfer
to reduce driver translation overhead
3.4.5.2
Performance and Throughput
The Adaptec 7901 contain improved Adaptec RISC-based processors (ARPs) that execute
SCSI Control Blocks (SCBs) to initiate data transfers between the PCI-X and SCSI interfaces.
The ARPs support execution speeds of 40 MIPS and provide 8 KB of SRAM microcode storage.
These ASICs operate at up to 66 MHz in PCI mode with a maximum 533 MB/sec data burst rate.
3.4.5.3
PCI/PCI-X Mode Operation
Depending on the state of the initialization pattern on the PCI bus during power up, the Adaptec
7901 can be initialized to operate in either conventional PCI or PCI-X mode; both wire and
message-signaled interrupts are supported.
3.4.5.4
PCI Bus
The Adaptec 7901 performance levels at 3.3 VIO are as follows:
z When operation in PCI-X mode as a 64-bit bus master, the Adaptec 7901 can support
memory data transfer up to 533 MB/sec at 66 MHz.
z When operation in PCI-X mode as a 32-bit bus master, the Adaptec 7901 can support
memory data transfer up to 266 MB/sec at 66MHz
z When operation in PCI-X mode as a 64-bit bus master, the Adaptec 7901 can support
memory data transfer up to 266 MB/sec at 33MHZ
z When operation in PCI-X mode as a 32-bit bus master, the Adaptec 7901 can support
memory data transfer up to 133 MB/sec at 33MHZ
3.4.5.5
SCSI Bus
The Adaptec 7901 can operate in SE or LVD mode, depending on the voltage level of the SCSI
DIFFSENSE (F2), which is determined by the combination of the SCSI devices attached to the
bus, the SCSI bus operates in SE mode and the SCSI data transfer rate is speed of the SCSI
device currently transferring data.
Note: The Adaptec 7901 does not support High Voltage Differential (HVD) devices. When an
HVD device is detected, the bus goes tri-state and transmission stops.
Revision 2.0
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