Texas Instruments DS320-SLIMSAS-EVM Manuale utente
EVM User's Guide: DS320-SLIMSAS-EVM
DS320-SLIMSAS-EVM User's Guide
ABSTRACT
The DS320-SLIMSAS-EVM together with the DS320PR810-RSC-EVM, or other Texas Instrument's riser-card
style PCI-Express™ 5.0 redriver evaluation module, provides a complete high-bandwidth platform for evaluating
the signal conditioning features of the Texas Instruments PCI-Express 5.0 linear redrivers. These evaluation
boards can be used for performance evaluation and initial system prototyping.
Figure 1-1. DS320-SLIMSAS-EVM – Top Side View
Table of Contents
1 Introduction.............................................................................................................................................................................3
1.1 Features............................................................................................................................................................................. 3
1.2 Applications........................................................................................................................................................................3
1.3 Description......................................................................................................................................................................... 3
1.4 Quick-Start Guide...............................................................................................................................................................5
2 Typical Test Setup...................................................................................................................................................................5
3 Board Layout...........................................................................................................................................................................6
4 Schematic................................................................................................................................................................................7
5 Bill of Materials..................................................................................................................................................................... 12
List of Figures
Figure 1-1. DS320-SLIMSAS-EVM – Top Side View...................................................................................................................1
Figure 2-1. Example Test Setup.................................................................................................................................................. 5
Figure 3-1. Top Layer...................................................................................................................................................................6
Figure 3-2. Bottom Layer............................................................................................................................................................. 6
Figure 4-1. Controls Schematic Page..........................................................................................................................................7
Figure 4-2. Clock Distribution Schematic Page........................................................................................................................... 8
Figure 4-3. Goldfinger Connector Schematic Page..................................................................................................................... 9
Figure 4-4. SlimSAS Connector 1 Schematic Page.................................................................................................................. 10
Figure 4-5. SlimSAS Connector 2 Schematic Page...................................................................................................................11
www.ti.com Table of Contents
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DS320-SLIMSAS-EVM User's Guide 1
Copyright © 2022 Texas Instruments Incorporated
List of Tables
Table 1-1. Main Connectors and Access Points.......................................................................................................................... 3
Table 1-2. PCIe Side Band Signal Controls................................................................................................................................. 3
Table 1-3. PCIe Reference Clock Controls and Access Points................................................................................................... 4
Table 5-1. Bill of Materials..........................................................................................................................................................12
Trademarks
PCI-Express™ is a trademark of PCI SIG.
All trademarks are the property of their respective owners.
Trademarks www.ti.com
2DS320-SLIMSAS-EVM User's Guide SNLU299 – NOVEMBER 2022
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Copyright © 2022 Texas Instruments Incorporated
1 Introduction
DS320-SLIMSAS-EVM is a PCI-Express 5.0 x16 to two x8 SlimSAS (SFF-8654) adapter, which enables
DS320PR810-RSC-EVM and other Texas Instruments PCI-Express 5.0 redriver riser card evaluation modules to
interface with up to four U.2 solid state drives (SSDs) using commercially available SlimSAS (SFF-8654) to U.2
(SFF-8639) cable assemblies (not included). Interface to M.2 SSDs is also possible using commercially available
U.2 to M.2 adapter cards (not included).
DS320-SLIMSAS-EVM features Texas instruments LMK00334 PCI-Express clock buffer for distributing the PCI-
Express 100 MHz reference clock to downstream SSDs. It also allows flexible assignment of the PCI-Express
side band signals using jumpers.
1.1 Features
• PCIe-Express CEM 5.0 compliant Goldfinger connector
• Two x8 SlimSAS (SFF-8654) connectors
• LMK00334 PCI-Express clock buffer
• Flexible assignment of PCI-Express side band signals
• Supports PCI-Express 1 x4, 2 x4, and 4 x4 bifurcation
1.2 Applications
• PCI Express Gen-1, 2, 3, 4 and 5
• Enterprise storage
1.3 Description
1.3.1 Connectors and Access Points
Table 1-1 shows DS320-SLIMSAS-EVM main connectors and access points.
Table 1-1. Main Connectors and Access Points
COMPONENT NAME FUNCTION / DESCRIPTION
P2 PCIe 4.0 x8 SlimSAS
Connector 1
Access points to PCIe lanes 0 - 7.
Use a SlimSAS (SFF-8654) to U.2 (SFF-8639) cable assembly (not included) to
interface to SSDs with U.2 form factor.
P3 PCIe 4.0 x8 SlimSAS
Connector 1
Access points to PCIe lanes 8 - 15.
Use a SlimSAS (SFF-8654) to U.2 (SFF-8639) cable assembly (not included) to
interface to SSDs with U.2 form factor.
P1 PCIe CEM 5.0 x16
Goldfinger Connector
Access points to PCIe lanes 0 - 15.
Plug into a PCIe x16 CEM slot.
J7 3x1 Header I2C bus access point.
J1 2x1 Header Access point to WAKE and CLKREQ pins on the CEM connector.
Table 1-2 shows PCIe side band signal controls and access points.
Table 1-2. PCIe Side Band Signal Controls
COMPONENT NAME FUNCTION / DESCRIPTION
J8 3x1 Header
Provision for connecting PERST# signal from the CEM connector to B11 or B12 pin
of SlimSAS connector P2.
Shunt installed across pins 1-2: PERST# signal routed to B11 pin of SlimSAS
connector P2.
Shunt installed across pins 2-3: PERST# signal routed to B12 pin of SlimSAS
connector P2 (default).
J10 3x1 Header
Provision for connecting PERST# signal from the CEM connector to B29 or B30 pin
of SlimSAS connector P2.
Shunt installed across pins 1-2: PERST# signal routed to B29 pin of SlimSAS
connector P2.
Shunt installed across pins 2-3: PERST# signal routed to B30 pin of SlimSAS
connector P2 (default).
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Table 1-2. PCIe Side Band Signal Controls (continued)
COMPONENT NAME FUNCTION / DESCRIPTION
J9 3x1 Header
Provision for connecting PERST# signal from the CEM connector to B11 or B12 pin
of SlimSAS connector P3.
Shunt installed across pins 1-2: PERST# signal routed to B11 pin of SlimSAS
connector P3.
Shunt installed across pins 2-3: PERST# signal routed to B12 pin of SlimSAS
connector P3 (default).
J11 3x1 Header
Provision for connecting PERST# signal from the CEM connector to B29 or B30 pin
of SlimSAS connector P3.
Shunt installed across pins 1-2: PERST# signal routed to B29 pin of SlimSAS
connector P3.
Shunt installed across pins 2-3: PERST# signal routed to B30 pin of SlimSAS
connector P3 (default).
J16 4x2 Header
Provision for connecting PRSNT1 signal to PRSNT2_1, PRSNT2_2, PRSNT2_3
and PRSNT2_4 pins on the CEM connector.
Shunt installed across pins 1-2: PRSNT1 signal routed to PRSNT2_1 pin on the
CEM connector (default).
Shunt installed across pins 3-4: PRSNT1 signal routed to PRSNT2_2 pin on the
CEM connector (default).
Shunt installed across pins 5-6: PRSNT1 signal routed to PRSNT2_3 pin on the
CEM connector (default).
Shunt installed across pins 7-8: PRSNT1 signal routed to PRSNT2_4 pin on the
CEM connector (default).
J5 4x1 Header Access point to the pins A8, A9, A26, and A27 of SlimSAS connector P2.
J6 4x1 Header Access point to the pins A8, A9, A26, and A27 of SlimSAS connector P3.
J12 3x1 Header Provision for connecting PRSNT2_2 pin on the CEM connector to B11 or B12 pin
of SlimSAS connector P2.
J14 3x1 Header Provision for connecting PRSNT2_1 pin on the CEM connector to B29 or B30 pin
of SlimSAS connector P2.
J13 3x1 Header Provision for connecting PRSNT2_4 pin on the CEM connector to B11 or B12 pin
of SlimSAS connector P3.
J15 3x1 Header Provision for connecting PRSNT2_3 pin on the CEM connector to B29 or B30 pin
of SlimSAS connector P3.
Table 1-2 shows PCIe reference clock controls and access points.
Table 1-3. PCIe Reference Clock Controls and Access Points
COMPONENT NAME FUNCTION / DESCRIPTION
JMP2 3x1 Header
Clock distributor (LMK00334) output enable
Shunt installed across pins 1-2: outputs disabled.
Shunt installed across pins 2-3: outputs enabled (default).
JMP1 3x1 Header
Clock distributor (LMK00334) input select
Shunt installed across pins 1-2: CLKIN1 (An external clock source coming from the
SMP connectors) selected.
Shunt installed across pins 2-3: CLKIN0 (PCIe system clock coming from the CEM
connector) selected (default).
J2 - J3 SMP Connectors Provision for connecting an external clock source to the LMK00334 CLK1 input
Plug into a PCIe x16 CEM slot.
JMP3 3x1 Header
Clock distributor (LMK00334) LVCMOS reference output enable
Shunt installed across pins 1-2: reference output enabled.
Shunt installed across pins 2-3: reference output disabled (default).
J4 SMP Connector Access point to the LMK00334 reference output.
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1.4 Quick-Start Guide
1. Check that the shunts are at the following default positions as shown in Figure 1-1.
• J8: Shunt installed across pins 2-3: PERST# signal routed to B12 pin of SlimSAS connector P2.
• J10: Shunt installed across pins 2-3: PERST# signal routed to B30 pin of SlimSAS connector P2.
• J9: Shunt installed across pins 2-3: PERST# signal routed to B12 pin of SlimSAS connector P3.
• J11: Shunt installed across pins 2-3: PERST# signal routed to B30 pin of SlimSAS connector P3.
• J16: Shunts installed across pins 1-2, 3-4, 5-6, and 7-8: PRSNT1 signal routed to PRSNT2_1,
PRSNT2_2, PRSNT2_3, and PRSNT2_4 pins on the CEM connector.
• JMP2: Shunt installed across pins 2-3: LMK00334 outputs enabled.
• JMP1: Shunt installed across pins 2-3: PCIe system clock selected as an input to the LMK00334.
• JMP3: Shunt installed across pins 2-3: LMK00334 reference output disabled.
2. Plug DS320PR810-RSC-EVM, or other riser card style TI evaluation board into a PCIe x16 CEM slot on a
motherboard. Ensure that the motherboard is powered down prior to installing the riser card.
3. Install DS320-SLIMSAS-EVM into the straddle connector on the riser card selected in the prior step.
4. Connect a SlimSAS (SFF-8654) to U.2 (SFF-8639) cable assembly (not included) into the SlimSAS
connector P2 of the DS320-SLIMSAS-EVM. Alternatively, connect the second cable assembly into the
SlimSAS connector P3 of the DS320-SLIMSAS-EVM.
5. Attached an endpoint or endpoints on the other side of the cable. Ensure that the power is also provided to
one or more of the endpoints prior to powering up the motherboard.
6. Power-up the motherboard.
7. Observe a successful linkup of one or more of the endpoints using system BIOS or other available system
utility.
2 Typical Test Setup
Figure 2-1 shows a typical system test setup with the DS3200PR810-RSC-EVM and DS320-SLIMSAS-EVM
placed between a CPU on a server motherboard and PCIe 5.0 endpoints. The endpoints are SSDs with M.2
form factor mounted on U.2 to M.2 adapters.
Figure 2-1. Example Test Setup
The test setup features the following items not included in the DS320-SLIMSAS-EVM:
• SlimSAS x8 (SFF-8654) to 2x PCIe Drive Receptacle (SFF-8639) Cable (for U.2, 1×4 only), Part #:
SLSP-8X-39X2F4-0.5M. More information about this item is available here.
• PCIe 4.0 U.2 to M.2 Adapter, Part #: PCI-AD-U2M2-04-G4. More information about this item is available here.
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