Viking Technology PSFDUC3XXXXYXX Manual

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Manual

9/16/2014

PSFDUC3XXXXYXX Viking Technology

Revision B

Page 9 of 18

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1.4 USB Interface

• The USB interface is compliant with the USB 2.0 specification.

• The USB interface connects the host computer to the embedded USB.

• The USB interface runs at a maximum speed of 2.0 Gbps (gigabits per

second). If the host computer is unable to negotiate a speed of 2.0 Gbps,

the USB interface automatically renegotiates to lower speeds.

2 Product Specifications

2.1 Performance

The host interface speed is 60MB/s with a read/write bandwidth shown in the

following tables.

Table 2-1: Maximum Sustained Read and Write Bandwidth

Access Type

MB/s

Read, Dual Channel

Up to 35

Write, Dual Channel

Up to 23

2.2 Timing

Table 2-2: Timing Specifications

2.3 Power-up AC timing Requirements

Parameter Symbol Min. Typical Max. Unit

Powerup to Ready (from 2.7V

VBUS)

tRESET 100 150 250 ms

Notes:

1. This power-up timing can be changed to 10ms upon request. The long power-up delay is designed to

accommodate slow power-up times of rack systems.