TNETA1585

ATM TRAFFIC MANAGEMENT SCHEDULER DEVICE

WITH RECEIVE UTOPIA AND COPROCESSOR INTERFACES

SDNS041A – NOVEMBER 1996 – REVISED JULY 1998

10

POST OFFICE BOX 655303

RM-cell-contents FIFO A

When the TNETA1575 reads the next-cell register and an indication is given that an RM cell should be sent from

the RM-cell-contents FIFO A, the TNETA1575 must make 12 accesses to control-memory location 10001h to

fetch one entire cell payload. The data that is returned by the TNETA1585 is in big-endian format as follows:

Byte 0 (31–24)

Byte 1 (23–16)

Byte 2 (15–8)

Byte 3 (7–0)

The ordering and formatting of data (as it is sequentially read from this register) is:

Word 0 – Bytes 0, 1, 2, 3

Word 1 – Bytes 0, 1, 2, 3

•

•

•

RM-cell-contents FIFO B

When the TNETA1575 reads the next-cell register and an indication is given that an RM cell should be sent from

the RM-cell-contents FIFO B, the TNETA1575 must make 12 accesses to control-memory location 10002h to

fetch one entire cell payload. The data that is returned by the TNETA1585 is in big-endian format as follows:

Byte 0 (31–24)

Byte 1 (23–16)

Byte 2 (15–8)

Byte 3 (7–0)

The ordering and formatting of data (as it is sequentially read from this register) is:

Word 0 – Bytes 0, 1, 2, 3

Word 1 – Bytes 0, 1, 2, 3

•

•

•

RM-cell-contents FIFO C

When the TNETA1575 reads the next-cell register and an indication is given that an RM cell should be sent from

the RM-cell-contents FIFO C, the TNETA1575 must make 12 accesses to control-memory location 10003h to

fetch one entire cell payload. The data that is returned by the TNETA1585 is in big-endian format as follows:

Byte 0 (31–24)

Byte 1 (23–16)

Byte 2 (15–8)

Byte 3 (7–0)

The ordering and formatting of data (as it is sequentially read from this register) is:

Word 0 – Bytes 0, 1, 2, 3

Word 1 – Bytes 0, 1, 2, 3

•

•

•