Texas Instruments DS320-SLIMSAS-EVM, User Manual

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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).
www.ti.com Introduction
SNLU299 – NOVEMBER 2022
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