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XRS10L140 Datasheet PDF


XRS10L140 - Exar Corporation

Part Number XRS10L140
Description SERIAL ATA II: 1:4 PORT MULTIPLIER
Manufacturers Exar Corporation 
Logo Exar Corporation Logo 
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XRS10L140 datasheet
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XRS10L140 pdf, equivalent, schematic
XRS10L140
PRELIMINARY
SERIAL ATA II: 1:4 PORT MULTIPLIER
REV. P1.0.2
HIGH SPEED I/O FEATURES
High speed outputs with selectable pre-emphasis to extend the link budgets.
High speed input equalization for improved signal integrity.
Compliant with SATA Gen2i & Gen2 specification.
Enables reliable data transmission over 1 meter or more of FR-4 and 15 meters or more of unequalized
copper cable.
Supports spread spectrum clocking to reduce EMI.
PHYSICAL FEATURES
CMOS 0.13 Micron Technology
Single 1.2 V Power Supply
-40°C to 85°C Industrial Temperature Range
2000 V ESD Rating on All Pins
No heatsink or airflow required
100-Pin QFP Package
APPLICATION EXAMPLE
The XRS10L140 is ideally suited for use within an external drive enclosure as a means of providing access to
up to four target devices per XRS10L140. This application is shown in Figure 1. Other applications for the
XRS10L140 include use in fixed-content or network attached storage systems, storage arrays, desktop
applications or entry-level servers, RAID storage or disk-to-disk backup.
FIGURE 1. SYSTEM BLOCK DIAGRAM FOR XRS10L140 IN A DRIVE ENCLOSURE APPLICATION
D R IV E EN C LO S U R E
X R T 10L140
PO R T M ULTIPLIER
X R T 10L140
PO R T M ULTIPLIER
SATA
SATA
SATA
SATA
SATA
SATA
SATA
SATA
2
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XRS10L140 transistor, diode fet, igbt, scr
PRELIMINARY
XRS10L140
REV. P1.0.2
SERIAL ATA II: 1:4 PORT MULTIPLIER
device has issued an R_OK primitive to indicate successful frame reception. In this way, the R_OK status
handshake is interlocked from the device to the host.
If an error is detected during any part of the frame transfer, the XRS10L140 will ensure that the error condition
is propagated to the host and the device. If no error occurs during frame transfer, the XRS10L140 will not alter
the contents of the frame, or modify the CRC in any way.
3.5.1 Transmission from a Device to a Host
A device indicates a transmit to a host in the same way as would be done if the host and device were attached
directly. This transaction obeys the following procedure:
1. After receiving an X_RDY primitive from the device, the XRS10L140 will determine if the X bit is set in the
device port's PSCR (SError) register. The XRS10L140 will not issue an R_RDY primitive to the device until
this bit is cleared to zero.
2. The XRS10L140 will then receive the frame from the device. The XRS10L140 will fill in the PM Port field
with the port address of the transmitting device. The XRS10L140 will then check the CRC received from
the device, and if valid, it will recalculate the CRC based upon the new PM Port field. If the CRC calculated
from the device is incorrect, the XRS10L140 will corrupt the CRC sent to the host to ensure propagation of
the error condition
3. The XRS10L140 will issue an X_RDY primitive to the host to start the transmission of the frame to the host.
After the host issues an R_RDY primitive to the XRS10L140, the frame from the device, with the updated
CRC, will then be transmitted to the host. The XRS10L140 will not send an R_OK status primitive to the
device until the host has issued an R_OK primitive to indicate successful frame reception. In this way, the
R_OK status handshake will be interlocked from the device to the host.
If an error is detected during any part of the frame transfer, the XRS10L140 will ensure that the error condition
is propagated to the host and the device.
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Part NumberDescriptionManufacturers
XRS10L140The function of this parts is a SERIAL ATA II: 1:4 PORT MULTIPLIER.Exar Corporation
Exar Corporation

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