DS705 Datasheet, PDF(44/54 Page) Xilinx, Inc – Integrated adder for complex multiply or multiply-add operation

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

DS705 Datasheet, PDF (44/54 Pages) Xilinx, Inc – Integrated adder for complex multiply or multiply-add operation

◁

XA Spartan-3A DSP Automotive FPGA Family Data Sheet

Configuration and JTAG Timing

General Configuration Power-On/Reconfigure Timing

X-Ref Target - Figure 10

VCCINT

(Supply)

1.0V

VCCAUX

(Supply)

2.0V

VCCO Bank 2

(Supply)

PROG_B

(Input)

INIT_B

(Open-Drain)

2.0V

TPOR

TPROG

TPL

CCLK

(Output)

TICCK

Notes:

1. The VCCINT, VCCAUX, and VCCO supplies can be applied in any order.

2. The Low-going pulse on PROG_B is optional after power-on.

3. The rising edge of INIT_B samples the voltage levels applied to the mode pins (M0 - M2).

Figure 10: Waveforms for Power-On and the Beginning of Configuration

1.2V

2.5V

3.3V

2.5V

3.3V

DS705_11_061908

Table 46: Power-On Timing and the Beginning of Configuration

Symbol

Description

Device

Min

Max

Units

TPOR(2)

The time from the application of VCCINT, VCCAUX, and VCCO

All

Bank 2 supply voltage ramps (whichever occurs last) to the

rising transition of the INIT_B pin

TPROG

TPL(2)

The width of the low-going pulse on the PROG_B pin

All

0.5

Î¼s

The time from the rising edge of the PROG_B pin to the

All

rising transition on the INIT_B pin

TINIT

TICCK(3)

Minimum Low pulse width on INIT_B output

All

300

The time from the rising edge of the INIT_B pin to the

All

0.5

Î¼s

generation of the configuration clock signal at the CCLK

output pin

Notes:

1. The numbers in this table are based on the operating conditions set forth in Table 8. This means power must be applied to all VCCINT, VCCO,

and VCCAUX lines.

2. Power-on reset and the clearing of configuration memory occurs during this period.

3. This specification applies only to the SPI and BPI modes.

4. For details on configuration, see UG332, Spartan-3 Generation Configuration User Guide.

DS705 (v1.1) January 20, 2009

www.xilinx.com

Product Specification

▷