Communication system for transmitting and receiving control frames

• US 10,261,924 B2
• Filed: 08/03/2016
• Issued: 04/16/2019
• Est. Priority Date: 08/03/2016
• Status: Active Grant

• Current Assignee: NXP USA, Inc. (NXP Semiconductors NV)
• Original Assignee: NXP USA, Inc. (NXP Semiconductors NV)
• Inventors: Nautiyal, Hemant, Kapoor, Rajan, Kaushik, Arvind, Khandelwal, Puneet
• Primary Examiner(s): Tsai, Henry
• Assistant Examiner(s): Bartels, Christopher A
• Application Number:
  US15/227,834
• Publication Number:
  US 20180039589A1
• Time in Patent Office: 986 Days
• Field of Search: None
• CPC Class Codes: G06F 13/24 using interrupt G06F13/32 takes precedence
• CPC Class Codes: G06F 13/4286 using a handshaking protocol, e.g. RS232C link
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A communication system for communicating control data between a processor and an interface includes configuration registers, a packet processor, an interrupt processor, a timing monitor, a configuration sampler, a control-frame processor, a mode selector, and a transceiver. The processor, timing monitor, and configuration sampler generate control data, a timing signal and frame structure data, respectively. The packet processor generates a transmit control configuration packet, which includes the control data. The control-frame processor inserts the transmit control configuration packet into a first control frame, outputs the control frame to the interface and extracts a receive-configuration packet from a second control frame for generating one or more interrupts. The mode selector generates mode and idle signals for determining the mode of the interface, based on the idle signal. In one implementation, the system uses JESD control frames to reduce GPIO pin usage.

Claims

1. A communication system connected between a baseband processor and a Joint Electron Devices Engineering Council (JEDEC) Standards Document (JESD) 204B compliant serial interface for transmitting and receiving first and second JESD control frames corresponding to first and second data, respectively, the communication system comprising:

a set of configuration registers that receives and stores at least one of first and second control data from the baseband processor, and outputs at least one of first and second control-configuration data based on the first and second control data, respectively;

a packet processor that (i) receives at least one receive-configuration packet, (ii) receives the first control-configuration data from the set of configuration registers, and generates at least one transmit-configuration packet and at least one receive-configuration data based on the first control-configuration data and the at least one receive-configuration packet, respectively;

a configuration sampler that (i) receives at least one of first and second frame-configuration data, (ii) identifies first and second frame-structure data based on the first and second frame-configuration data, respectively, and (iii) outputs at least one of the first and second frame-structure data;

a timing monitor circuit that receives at least one of first and second frame-timing data and outputs at least one of first and second timing signals, respectively;

a control-frame processor that (i) receives the second JESD control frame, (ii) is connected to the packet processor, the configuration sampler, and the timing monitor circuit, (iii) receives the at least one transmit-configuration packet, the at least one of the first and second frame-structure data, and the at least one of the first and second timing signals, respectively, and (iv) generates the first JESD control frame and the at least one receive-configuration packet, wherein the first JESD control frame is generated based on the at least one transmit-configuration packet, the first timing signal, and the first frame-structure data, and wherein the at least one receive-configuration packet is generated based on the second JESD control frame, the second timing signal, and the second frame-structure data; and

a transceiver connected to the serial interface, the baseband processor, and the control frame processor, wherein the transceiver (i) receives the first JESD control frame including first configuration data, the second JESD control frame including second configuration data, and the first data, respectively, (ii) identifies the first and second frame-configuration data based on the first and second configuration data, respectively, and the first and second frame-timing data based on the first and second configuration data, respectively, and (iii) outputs the at least one of the first and second frame-configuration data, the at least one of the first and second frame-timing data, the first JESD control frame, and the first data, wherein the first JESD control frame includes the first configuration data and the first control data, and wherein the serial interface receives the first JESD control frame and the first data, thereby transmitting and receiving the first and second JESD control frames corresponding to the first and second data, respectively.

2. The communication system of claim 1, wherein the transceiver outputs the second configuration data and the second data, and the baseband processor receives the second data and the second configuration data from the transceiver.

3. The communication system of claim 1, further comprising a mode selector that is connected to the control frame processor, wherein the mode selector (i) receives the at least one receive-configuration packet, (ii) generates a mode signal corresponding to the second data based on the at least one receive-configuration packet, (iii) generates an idle signal based on the mode signal, and (iv) outputs the mode and idle signals.

4. The communication system of claim 3, wherein the transceiver receives and outputs the idle signal, and the baseband processor receives the idle signal from the transceiver.

5. The communication system of claim 3, wherein the configuration sampler is connected to the mode selector and receives the mode signal and updates the second frame configuration data based on the mode signal.

6. The communication system of claim 5, wherein the mode signal indicates at least one of a burst mode and a continuous mode.

7. The communication system of claim 1, wherein the configuration sampler and the timing monitor circuit are connected to the transceiver and receive the at least one of the first and second frame-configuration data and the at least one of the first and second frame-timing data, respectively.

8. A radio frequency integrated circuit (RFIC) for connection between a baseband processor and a Joint Electron Devices Engineering Council (JEDEC) Standards Document (JESD) 204B compliant serial interface, wherein the baseband processor generates first configuration data and first and second control data, the RFIC comprising:

a communication system that receives the first configuration data and the first and second control data from the baseband processor, and transmits and receives first and second JESD control frames corresponding to first and second data, respectively, wherein the communication system comprises;

a set of configuration registers that receives at least one of the first and second control data, stores the at least one of the first and second control data, and outputs at least one of first and second control-configuration data based on the first and second control data, respectively;

a packet processor that receives at least one receive-configuration packet, receives the first control-configuration data from the set of configuration registers, and generates at least one transmit-configuration packet and receive-configuration data based on the first control-configuration data and the at least one receive-configuration packet, respectively;

a configuration sampler that receives at least one of first and second frame-configuration data, identifies first and second frame-structure data based on the first and second frame-configuration data, respectively, and outputs at least one of the first and second frame-structure data;

a timing monitor circuit that receives at least one of first and second frame-timing data and outputs at least one of first and second timing signals, respectively;

a control-frame processor that (i) receives the second JESD control frame, (ii) is connected to the packet processor, the configuration sampler, and the timing monitor circuit, (iii) receives the at least one transmit-configuration packet, the at least one of the first and second frame-structure data, and the at least one of the first and second timing signals, respectively, and (iv) generates the first JESD control frame and the at least one receive-configuration packet, wherein the first control frame is generated based on the at least one transmit-configuration packet, the first timing signal, and the first frame-structure data, and wherein the at least one receive-configuration packet is generated based on the second JESD control frame, the second timing signal, and the second frame-structure data; and

a transceiver that (i) receives the second data and the second JESD control frame including second configuration data, (ii) receives the first data and the first configuration data from the baseband processor, and the first JESD control frame from the control frame processor, (iii) identifies the first and second frame-configuration data based on the first and second configuration data, respectively, and the first and second frame-timing data based on the first and second configuration data, respectively, and (iv) outputs the at least one of the first and second frame-configuration data, the at least one of the first and second frame-timing data, the first JESD control frame, and the first data, wherein

the first JESD control frame includes the first configuration data and the first control data; and

wherein the JESD interface (i) outputs the second JESD control frame and the second data, and (ii) receives the first JESD control frame and the first data from the communication system, such that the communication system transmits and receives the first and second JESD control frames corresponding to the first and second data, respectively.

9. The RFIC of claim 8, wherein the transceiver outputs the second configuration data and the second data, and the baseband processor receives the second data and the second configuration data from the transceiver.

10. The RFIC of claim 8, further comprising a mode selector connected to the control frame processor, wherein the mode selector (i) receives the at least one receive-configuration packet, (ii) generates a mode signal corresponding to the second data based on the at least one receive-configuration packet, (iii) generates an idle signal based on the mode signal, and (iv) outputs the mode and idle signals.

11. The RFIC of claim 10, wherein the transceiver further receives and outputs the idle signal, and the baseband processor receives the idle signal from the transceiver.

12. The RFIC of claim 10, wherein the configuration sampler is connected to the mode selector and receives the mode signal and updates the second frame-configuration data based on the mode signal.

13. The RFIC of claim 12, wherein the mode signal indicates at least one of a burst mode and a continuous mode.

14. The RFIC of claim 8, wherein the configuration sampler and the timing monitor circuit are connected to the transceiver and receive the at least one of the first and second frame-configuration data and the at least one of the first and second frame-timing data, respectively.