CN205656615U - Treater based on MPC824x provides generic interface - Google Patents

Abstract

The utility model discloses a treater based on MPC824x provides generic interface, including central control unit to and the MPC603E microprocessor kernel that links to each other with central control unit respectively, store controller, PCI the control unit, double -H groove weld ART unit, ethernet controller, I2C unit etc. Adopt general fei sikaer MPC603e treater, high processing capacity, and multiple general communication interface is provided, including the PCI interface, the ethernet interface, serial communication interface, I2C bus interface etc, can extensively be used for wireless LAN, router / switch, embedded calculator, multichannel modem, the network storage, an image display system, the IO input -output process of enterprise ware, ethernet visit equipment, RAID system disk controller, copy the printing apparatus controller.

Description

A Processor Providing General Interface Based on MPC824x

technical field

The utility model relates to the field of processor research, in particular to a processor providing a general interface based on MPC824x.

Background technique

In various high-end applications of the Internet and data communication, the processor, as the center of communication and control, is an indispensable core module. Due to the complex technology of the processor module and numerous interfaces, this greatly increases the technical difficulty of development.

The use of high-performance general-purpose processor modules frees developers from complex processor design work, and only focuses on the design and application of peripheral circuits, which can reduce the time spent on debugging part of the processor and possible occurrences during project development. errors, greatly shortening design cycles, speeding time to market, and reducing the time and complexity of upgrades, resulting in lower total cost of ownership and outstanding scalability.

MPC824X is the second-generation PowerPC with high speed and low price. It has PCI 2.2 interface. It is widely used in practical work.

Therefore, the development is based on the MPC824x processor and provides various general interfaces, such as PCI interface, I ² C interface, Ethernet interface, RS485 interface, etc., which are of great significance for meeting various high-end applications of Internet and data communication and shortening the development cycle. important application value.

Utility model content

The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art, and provide a processor based on MPC824x that provides a general interface. The processor has multiple interfaces, strong processing capability, and wide application occasions.

The purpose of this utility model is realized by following technical scheme: a kind of processor based on MPC824x comprises central control unit, and the MPC603E microprocessor kernel that links to each other with central control unit, storage controller, PCI control unit and double UART unit . Described central control unit is the core control unit in the MPC824x processor chip, is connected with MPC603E microprocessor kernel, Boot (startup program device), Flash, SDRAM (Synchronous Dynamic Random Access Memory, synchronous dynamic random access memory) by 60X bus line, It is responsible for the control and communication between the MPC603E microprocessor core and all peripheral components. The storage controller is connected with Flash and SDRAM through a storage control line, and supports dual-boot startup at the same time. One of the UART controllers in the dual UART unit is externally connected to an RS232 level conversion chip, which is used to provide a debugging serial port of the RS232 level standard; for serial communication.

Preferably, the processor includes an Ethernet controller, the Ethernet controller is connected to the PCI control unit through a PCI bus, and is externally connected with an Ethernet level conversion chip for providing a 10M/100M adaptive Ethernet communication interface.

Preferably, the processor includes an I ² C unit, and the I ² C unit is connected to the central control unit for providing an I ² C standard communication interface.

Specifically, the RS232 level conversion chip adopts ADM3202ARN.

Specifically, the Ethernet level conversion chip adopts a PHY device MS5153.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

The utility model adopts the universal Fiscal MPC603E microprocessor, which has strong processing ability, and provides various general communication interfaces, including PCI interface, Ethernet interface, serial communication interface, I ² C bus interface, etc., which can be widely used In wireless LAN, router/switch, embedded calculator, multi-channel modem, network storage, image display system, enterprise I/O input and output processor, Ethernet access device, RAID system disk controller, copying and printing device controller.

Description of drawings

Fig. 1 is the structural schematic diagram of the utility model device.

detailed description

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example 1

As shown in Fig. 1, the processor described in this embodiment adopts Fiscal POWERPC series MPC824x as the main control chip, and the main control chip integrates MPC603E microprocessor core, 32-bit PCI main bridge, and 64-bit bus SDRAM controller. With high-performance processing capability, the processing capability reaches 488MIPS@266MHz. At the same time, it provides a standard PCI interface, supports up to 272MB ROM, 2GB SDRAM, and supports dual Boot. MPC603E integrates functions such as floating point unit, operation/storage unit, and system register unit.

This embodiment adopts a dual-channel integrated DMA controller, supports direct mode or link mode, supports between PCI and PCI, between local and PCI, and between local and local, and each channel has a 64-byte transmission queue. The storage controller is connected with Flash and SDRAM through a storage control line, and supports dual-boot startup at the same time. In the processor, the MPC603E microprocessor core and the central control unit are respectively connected to the Flash and SDRAM through the 60X bus, and support dual-Boot startup at the same time.

This embodiment includes a PCI control unit for providing a PCI bus interface, and the interface signals are P_CLK, P_IDSEL, P_IDSEL2, P_INT<3..0>, P_REQ<3..0>, P_GNT<3..0>, REQ2, GNT2, P_FRAME, P_DEVSEL, P_IRDY, P_LOCK, P_PAR, P_TRDY, P_PERR, P_STOP, P_SERR, P_CBE<3..0>, P_AD<31..0>,. Compatible with PCI2.2 specification, 32-bit bus, maximum support 66MHZ. Support up to 5 PCI devices to be connected, request and permission through REQ<4..0>, GNT<4..0>. Support to work in PCI master mode or PCI slave mode, the specific implementation method is:

(1) When working in PCI master mode (PCI_MODE=0), P_REQ<3..0>, P_GNT<3..0> are used for external PCI devices. P_REQ4\P_GNT4 is used for PCI device RTL8139 inside the module.

(2) When working in PCI slave mode (PCI_MODE=1), P_REQ3/P_GNT3 is used for this MPC824x to apply for bus usage right from the main PCI, and REQ2/GNT2 is used for the Ethernet controller RTL8139 in this module to apply for bus usage from the main PCI right.

The processor described in this embodiment also includes an RTL8139 Ethernet controller, the RTL8139 Ethernet controller is connected to the PCI bus, and the external PHY device MS5153 Ethernet level conversion chip can provide 10M/100M adaptive Ethernet Communication interface, the interface signals are FE_TX+, FE_TX-, FE_RX+, FE_RX-.

This embodiment provides a dual UART unit compatible with ST16550, which includes two UART controllers. One of the UART controllers is externally connected to the PHY device RS232 level conversion chip ADM3202ARN, which provides an RS232 level standard debugging interface for online debugging with the computer serial communication port, and the interface signals are RS232_TX and RS232_RX. Another UART controller is directly connected to the daughter card socket for serial communication on the motherboard using RS485 level, and the interface signals are RS485TX, RS485TEN, RS485RX, RS485REN.

The processor in this embodiment further includes an I ² C unit, which is connected to the central control unit and used to provide an I ² C standard communication interface, and the interface signals are ^I2C_SCL and I2C_SDA.

The external output interface signals of the module in this embodiment are shown in Table 1.

Table 1 Module external interface signal definition

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (5)

1. the processor that general-purpose interface is provided based on MPC824x, it is characterised in that include central authorities' control Unit processed, and be connected with central control unit respectively MPC603E micro-processor kernel, storage control, PCI control unit and dual uart unit, in described central control unit is MPC824x processor chips Core control part, by 60X bus and MPC603E micro-processor kernel, Boot, Flash, SDRAM Connect, for being responsible for the control between MPC603E micro-processor kernel and other all parts and leading to Letter；Described storage control is connected with Flash, SDRAM by storage control line, supports double Boot simultaneously Start；The wherein external RS232 electrical level transferring chip of a UART controller in described dual uart unit, For providing the debugging serial ports of RS232 level standard；Another UART controller is directly connected to subcard and inserts Seat, uses RS485 level to carry out serial communication for motherboard.

The processor that general-purpose interface is provided based on MPC824x the most according to claim 1, its feature Being, described processor includes that ethernet controller, described ethernet controller pass through with PCI control unit Pci bus is connected, and an external Ethernet electrical level transferring chip is used for providing 10M/100M self adaptation Ethernet Communication interface.

The processor that general-purpose interface is provided based on MPC824x the most according to claim 1, its feature Being, described processor includes I²C cell, described I²C cell is connected with central control unit, is used for providing I²C standard communication interface.

The processor that general-purpose interface is provided based on MPC824x the most according to claim 1, its feature Being, described RS232 electrical level transferring chip uses ADM3202ARN.

The processor that general-purpose interface is provided based on MPC824x the most according to claim 2, its feature Being, described Ethernet electrical level transferring chip uses PHY device MS5153.