OR3LP26B datasheet(131/184 Pages) AGERE

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Lucent Technologies Inc.

131

Data Sheet

ORCA OR3LP26B FPSC

March 2000

Embedded Master/Target PCI Interface

Lucent Technologies Inc.

FPGA Configuration Data Format (continued)

Figure 49. Serial Configuration Data Format—Autoincrement Mode

Figure 50. Serial Configuration Data Format—Explicit Mode

Note: For slave parallel mode, the byte containing the preamble must be 11110010. The number of leading header dummy bits must

be (n * 8) + 4, where n is any nonnegative integer and the number of trailing dummy bits must be (n * 8), where n is any positive

integer. The number of stop bits/frame for slave parallel mode must be (x * 8), where x is a positive integer. Note also that the bit

stream generator tool supplies a bit stream that is compatible with all configuration modes, including slave parallel mode.

Table 43. Configuration Frame Format and Contents

Header

11110010

Preamble.

24-bit Length Count

Configuration frame length.

11111111

Trailing header—8 bits.

ID Frame

0101 1111 1111 1111

ID frame header.

Configuration Mode

00 = autoincrement, 01 = explicit.

Reserved [41:0]

Reserved bits set to 0.

20-bit part ID.

Checksum

8-bit checksum.

11111111

Eight stop bits (high) to separate frames.

Configuration

Data

Frame

(repeated for each

data frame)

Data frame header.

Data Bits

Number of data bits depends upon device.

Alignment Bits = 0

String of 0 bits added to bit stream to make frame header, plus

data bits reach a byte boundary.

Checksum

8-bit checksum.

11111111

Eight stop bits (high) to separate frames.

Configuration

Address

Frame

Address frame header.

14 Address Bits

14-bit address of location to start data storage.

Checksum

8-bit checksum.

11111111

Eight stop bits (high) to separate frames.

Postamble

Postamble header.

11111111 111111

Dummy address.

1111111111111111

16 stop bits.

5-5759(F)

CONFIGURATION DATA

PREAMBLE LENGTH

ID FRAME

CONFIGURATION

POSTAMBLE

CONFIGURATION HEADER

COUNT

DATA FRAME 1

DATA FRAME 2

5-5760(F)

PREAMBLE LENGTH

ID FRAME

CONFIGURATION

POSTAMBLE

CONFIGURATION HEADER

ADDRESS

COUNT

DATA FRAME 1

DATA FRAME 2

FRAME 2

FRAME 1

CONFIGURATION DATA

0 1

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