OR3C80 datasheet(90/210 Pages) AGERE

90 / 210 page

Lucent Technologies Inc.

Data Sheet

June 1999

ORCA Series 3C and 3T FPGAs

Configuration Data Format (continued)

5-5759(F)

Figure 52. Serial Configuration Data Format—Autoincrement Mode

5-5760(F)

Figure 53. Serial Configuration Data Format—Explicit Mode

Table 32. Configuration Frame Format and Contents

* In MPI configuration mode, the number of stop bits = 32.

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.

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.*

CONFIGURATION DATA

1 0

PREAMBLE LENGTH

ID FRAME

CONFIGURATION

POSTAMBLE

CONFIGURATION HEADER

COUNT

DATA FRAME 1

DATA FRAME 2

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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