Multipurpose and programmable pad ring for an integrated circuit

• US 7,664,888 B2
• Filed: 10/29/2003
• Issued: 02/16/2010
• Est. Priority Date: 10/29/2002
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Tran, Hoang T, Baumer, Howard A
• Primary Examiner(s): Hafiz; Tariq R.
• Assistant Examiner(s): SUN, SCOTT C
• Application Number:
  US10/694,729
• Publication Number:
  US 20040088443A1
• Time in Patent Office: 2,302 Days
• Field of Search: 710/8, 710/11, 710/315, 370/466
• US Class Current: 710/11
• CPC Class Codes: G06F 13/4027 using bus bridges G06F13/4022 takes precedence
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: Y04S 40/00 Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them

Abstract

A multi-port SERDES transceiver includes multiple parallel and serial ports, and the flexibility to connect any one of the parallel or serial ports to another parallel or serial port. The ports include programmable pads that are capable of supporting multiple different data protocols, timing protocols, electrical specifications, and input-output functions. A management data IO pad also enables the transceiver to support different electrical requirements and data protocols at the same time. The substrate layout of the transceiver is configured so that the parallel ports and the serial ports are on the outer perimeter. A logic core is at the center, where the logic core operates the serial and parallel data ports, and the bus that connects the data ports. The bus can be described as a “ring” structure (or donut “structure”) around the logic core, and is configured between the logic core and the data ports.

Claims

1. A transceiver, comprising:

a substrate;

a plurality of ports including serial ports and parallel ports, said plurality of ports being configured and arranged such that any one of said serial and parallel ports can be connected to another serial or parallel port, each port including programmable pads, said plurality of ports being arranged on said substrate in a rotational symmetric layout,

wherein a first programmable pad is part of a first parallel port and a second programmable pad is part of a first serial port,

wherein at least one of a group consisting of said first programmable pad and said second programmable pad is configurable to operate according to a plurality of electrical specifications and a plurality of data protocols;

a bus coupled to said plurality of ports on said substrate; and

a pad control system constructed and arranged to configure said at least one of said first programmable pad and said second programmable pad to operate in accordance with a specified data protocol from among said plurality of data protocols and a specified electrical specification from among said plurality of electrical specifications.

2. The transceiver of claim 1, wherein said pad control system comprises:

a timing controller configured to modulate a delay between an input and an output of said at least one of said group consisting of said first programmable pad and said second programmable pad.

3. The transceiver of claim 2, wherein said pad control system comprises:

a timing register configured to send instructions to adjust said delay.

4. The transceiver of claim 1, wherein said pad control system comprises:

an input controller to configure said at least one of said group consisting of said first programmable pad and said second programmable pad to receive at least one of a group consisting of a data signal and a control signal.

5. The transceiver of claim 1, wherein said pad control system comprises:

an output controller to configure said at least one of said group consisting of said first programmable pad and said second programmable pad to send at least one of a group consisting of a data signal and a control signal.

6. The transceiver of claim 1, wherein said pad control system comprises:

a testing register configured to send a test message to measure leakage current from said at least one of said group consisting of said first programmable pad and said second programmable pad.

20. The transceiver of claim 1, wherein at least one of said first parallel port and said second parallel port is configured to operate according to a 10 Gigabit Media Independent Interface (XGMII) protocol.

21. The transceiver of claim 1, wherein said first parallel port is configured to operate at 1/10 of a data rate of said first serial port.

22. The transceiver of claim 1, wherein said first serial port is configured to operate according to a 10 Gigabit Attachment Unit Interface (XAUI) protocol.

23. The transceiver of claim 1, wherein said first serial port is configured to operate at a plurality of data rates.

24. The transceiver of claim 23, wherein said plurality of data rates includes at least one of:

3.125 GHz, 2.5 GHz, and 1.25 GHz.

25. The transceiver of claim 1, wherein said first serial port is configured to operate according to a 10 Gigabit Ethernet Extended Sublayer (XGXS) protocol.

26. The transceiver of claim 1, wherein said first serial port is configured to perform a parallel to serial conversion when said first serial port receives parallel data.

27. The transceiver of claim 1, wherein said first parallel port is configured to perform a serial to parallel conversion when said first parallel port receives serial data.

28. The transceiver of claim 1, wherein said pad control system comprises:

a register configured to send instructions to configure said at least one of said group consisting of said first programmable pad and said second programmable pad to comply with said specified data protocol and said specified electrical specification.

29. The transceiver of claim 1, wherein at least one of a group consisting of an operating voltage of said first programmable pad and an operating voltage of said second programmable pad is defined according to said specified electrical specification.

30. The transceiver of claim 1, wherein said at least one of said group consisting of said first programmable pad and said second programmable pad is configured to either send or receive data after having been configured to comply with said specified data protocol and said specified electrical specification.

39. The transceiver of claim 1, wherein said bus is arranged to form a ring structure around a central logic core, said central logic core including said pad control system.

40. The transceiver of claim 1, wherein said rotational symmetric layout of said substrate allows said transceiver to maintain its functionality and configuration when rotated.

41. The transceiver of claim 40, wherein said rotational symmetric layout of said substrate allows said transceiver to maintain its functionality and configuration when rotated approximately 180 degrees.

7. A method for programming a plurality of ports including serial ports and parallel ports, said plurality of ports being configured and arranged such that any one of said serial and parallel ports can be connected to another serial or parallel port, each port including a plurality of programmable pads, said plurality of pads being arranged on a substrate in a rotational symmetric layout, wherein a first programmable pad among said plurality of programmable pads is part of a first parallel port and a second programmable pad among said plurality of programmable pads is part of a first serial port, comprising:

(A) accessing a first set of instructions that specify a specified data protocol from among a plurality of data protocols;

(B) accessing a second set of instructions that specify a specified electrical specification from among a plurality of electrical specifications;

(C) sending a first control signal to at least one of a group consisting of said first programmable pad and said second programmable pad that carries said first set and second set of instructions;

(D) executing said first set and second set of instructions to configure said at least one of said group consisting of said first programmable pad and said second programmable pad;

(E) sending a second control signal to instruct said at least one of said group consisting of said first programmable pad and said second programmable pad to function as an output or an input based on said first set and second set of instructions.

8. The method according to claim 7, further comprising:

(F) sending an input control message to configure said at least one of said group consisting of said first programmable pad and said second programmable pad to receive at least one of a group consisting of a data and a control message.

9. The method according to claim 7, further comprising:

(F) sending an output control message to configure said at least one of said group consisting of said first programmable pad and said second programmable pad to send at least one of a group consisting of a data and a control message.

10. The method according to claim 7, further comprising:

(F) sending a test message to measure leakage current at said at least one of said group consisting of said first programmable pad and said second programmable pad.

11. The method according to claim 7, further comprising:

(F) sending a delay control message to adjust said delay between an input and an output at said at least one of said group consisting of said first programmable pad and said second programmable pad.

12. The method according to claim 11, further comprising:

(G) delaying said data at said at least one of said group consisting of said first programmable pad and said second programmable pad for a fixed time interval; and

(H) sending said data to a destination external to said at least one of said group consisting of said first programmable pad and said second programmable pad upon expiration of said fixed time interval, wherein said delay control message determines said fixed time interval.

13. The method according to claim 11, further comprising:

(G) delaying said data in a buffer at said at least one of said group consisting of said first programmable pad and said second programmable pad for a fixed time interval; and

(H) sending said data to a second buffer or a destination external to said at least one of said group consisting of said first programmable pad and said second programmable pad upon expiration of said fixed time interval, wherein said delay control message determines whether said data is sent to said second buffer or said destination.

34. The method of claim 7, wherein step (B) comprises:

(B)(i) accessing said electrical specification, said electrical specification including instructions to change at least one of a group consisting of an operating voltage of said first programmable pad and an operating voltage of said second programmable pad.

35. The method of claim 7, wherein step (B) comprises:

(B)(i) sending said second control signal to instruct said at least one of said group consisting of said first programmable pad and said second programmable pad to function as said output or said input based on said protocol and electrical specification instructions, after executing said protocol and electrical specification instructions.

36. The method of claim 7, further comprising:

(F) receiving data by least one of said first parallel part and said first serial port.

37. The method of claim 36, further comprising:

(F) sending data from said first parallel part to at least one of a group consisting of a second parallel port and said first serial port in accordance with said data protocol and said electrical specification.

38. The method of claim 36, further comprising:

(G)(i) sending data from first serial port to at least one of a group consisting of a second serial port and said first parallel port in accordance with said data protocol and said electrical specification.

42. The method according to claim 7, wherein said rotational symmetric layout of said substrate allows said transceiver to maintain its functionality and configuration when rotated.

43. The method according to claim 42, wherein said rotational symmetric layout of said substrate allows said transceiver to maintain its functionality and configuration when rotated approximately 180 degrees.

14. A transceiver, comprising:

a substrate;

a plurality of ports including serial ports and parallel ports, said plurality of ports being configured and arranged such that any one of said serial and parallel ports can be connected to another serial or parallel port, each port including programmable pads, said plurality of ports being arranged on said substrate to provide a rotational symmetric layout

wherein at least one of a group consisting of said first programmable pad and said second programmable pad is configurable to operate with a plurality of electrical specifications and a plurality of data protocols;

means for coupling said plurality of ports on said substrate;

means for accessing instructions that specify at least one of a specified data protocol from among a plurality of data protocols and a specified electrical specification from among a plurality of electrical specifications; and

means for executing said instructions to configure at least one of said group consisting of said first programmable pad and said second programmable pad to comply with said specified data protocol and said specified electrical specification.

15. The transceiver of claim 14, further comprising:

means for instructing said at least one of said group consisting of said first programmable pad and said second programmable pad to receive at least one of data and a control message.

16. The transceiver of claim 14, further comprising:

means for instructing said at least one of said group consisting of said first programmable pad and said second programmable pad to send at least one of a group consisting of data and a control message.

17. The transceiver of claim 14, further comprising:

means for measuring leakage current at said at least one of said group consisting of said first programmable pad and said second programmable pad.

18. The transceiver of claim 14, further comprising:

means for adjusting said delay between an input and an output at said at least one of said group consisting of said first programmable pad and said second programmable pad.

19. The transceiver of claim 18, further comprising:

means for delaying said data at said at least one of said group consisting of said first programmable pad and said second programmable pad for a fixed time interval; and

means for sending said data to a destination external to said group consisting of at least one of said first programmable pad and said second programmable pad upon expiration of said fixed time interval, wherein said timing means determines said fixed time interval.

31. The transceiver of claim 14, wherein said instructions include instructions to change an operating voltage of said at least one of said group consisting of said first programmable pad and said second programmable pad.

32. The transceiver of claim 14, wherein said at least one of said group consisting of said first programmable pad and said second programmable pad is configured to function as an output or an input based on said instructions.

33. The transceiver of claim 14, wherein said at least one of said group consisting of said first programmable pad and said second programmable pad is configured to either send or receive data after having been configured to comply with said specified data protocol and said specified electrical specification.

44. The transceiver of claim 14, wherein said means for coupling is arranged to form a ring structure around a central logic core, said central logic core including said means for executing said instructions.

45. The transceiver of claim 14, wherein said rotational symmetric layout of said substrate allows said transceiver to maintain its functionality and configuration when rotated.

46. The transceiver of claim 45, wherein said rotational symmetric layout of said substrate allows said transceiver to maintain its functionality and configuration when rotated approximately 180 degrees.