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Card host LSI and set device including the same

A complete set of equipment and card technology, applied in computer parts, cooperating devices, instruments, etc., can solve the problems of increasing installation area, reducing the total processing capacity of the bus, increasing the required space, etc., to achieve data transmission, expand universal The effect of stable, fast data transfer

Active Publication Date: 2011-01-19
PANASONIC SEMICON SOLUTIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, simply expanding the data bit width of the IO bus will increase the number of terminals of the microcomputer module or card host LSI, resulting in an increase in the mounting area
In addition, the required space for the wiring of the IO bus is also increased
Therefore, especially in portable devices such as mobile phones, there is a problem that the miniaturization and portability cannot be maintained.
[0018] Also, in the case where various peripheral LSIs (for example, USB-LSI or memory, etc.) are connected to the IO bus, in the main microcomputer which has no free space on the IO bus, multiple card host LSIs cannot be connected, so there is an inability to The problem of using multiple cards and increasing the load capacity of the IO bus, increasing the delay of the bus, and reducing the total processing capacity of the bus

Method used

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  • Card host LSI and set device including the same
  • Card host LSI and set device including the same
  • Card host LSI and set device including the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 2

[0139] Figure 9 It is a configuration diagram of the plant 200 according to Embodiment 2 of the present invention. Like Embodiment 1, the plant of this embodiment has the function of controlling an SD card as an example of a removable card, or controlling an embedded module corresponding to the SD card card bus specification.

[0140] like Figure 9 As shown, the plant 200 incorporates a main microcomputer LSI 10 as a microcomputer module, card host LSIs 101 and 102 , and a USB / card host LSI 201 . SD card host I / Fs 12 and 14 are incorporated in the main microcomputer LSI 10 .

[0141] The SD card host I / F 12 and 14 function as a master controller for the SD card bus specification. Furthermore, the SD card host I / F 12 is connected to the card host LSI 101 functioning as a slave via the card bus CB1 as the first card bus. In addition, the SD card host I / F 14 is connected to a USB / card host LSI 201 of an external device functioning as a slave via a card bus CB3 as a second c...

Embodiment approach 3

[0151] In Embodiment 1, the card host LSI 101 is controlled from the host microcomputer LSI 10 only via the card bus CB1, but it may also be configured by providing the SD card host I / F 131, 132, and 133 with switching register bus RB1 and existing The selector of the IO bus IB2, thereby also controlling the card host LSI101 via the IO bus IB2. According to this structure, when the SD card host I / F12 is relatively slow, the IO bus IB2 can be used to control the card host LSI101. In addition, the two buses of the card bus CB1 and the IO bus IB2 can also be used at the same time, for example, the SD card 110a is controlled from the card bus CB1 in a direct screening mode or a register screening mode, and the SD card 110a is controlled from the IO bus IB2 via the SD card host I / F132. SD card 110b.

[0152] Figure 11 It is a configuration diagram of a plant 300 according to Embodiment 3 of the present invention. also, Figure 12 Yes Figure 11 The detailed structural diagram...

Embodiment approach 1

[0153] In Embodiment 1, the slave master microcomputer LSI 10 controls the card host LSI 101 only via the card bus CB1, but the card host LSI 301 in this embodiment is different in that the card host LSI 301 can also be controlled via the IO bus IB2 which is the third card bus. . in addition, Figure 11 and Figure 12 Described will be the first embodiment figure 1 , image 3 The structure after deformation, due to the Figure 9 , Figure 10 The same is true, therefore, the drawings in which Embodiment 2 is modified are omitted. Additionally, for figure 1 , image 3 The same reference numerals are attached to the common structural elements, and the detailed description of this part is omitted here.

[0154] like Figure 11 As shown, the plant 300 incorporates a main microcomputer LSI10 as a microcomputer module, external IO-LSI27a, 27b, and card host LSI301,102. The main microcomputer LSI10 incorporates an IO bus I / F11 and an SD card host I / F12 having an encryption...

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Abstract

A set device including a card host LSI may perform high speed data transfer to removable cards etc. without sacrificing reduction in size and weight. A card host LSI (101) is connected to removable cards (110a, 110b) via card buses (CB11a, CB11b) configured to comply with predetermined card bus specifications. The card host LSI (101) is also connected to a microcomputer module (10) via a card bus (CB1) configured to comply with the predetermined card bus specifications.

Description

technical field [0001] The invention relates to a complete set of equipment with the function of controlling removable cards such as SD cards or embedded modules corresponding to such cards. Background technique [0002] Multimedia has begun to spread in portable devices, and mobile phone terminals and the like are equipped with slots for small card media such as SD cards, and most of them are used as external storage media. Conventionally, in order to control the compact card medium, a card host (card host) LSI is connected to the outside of the microcomputer LSI in the mobile phone terminal, and the compact card medium is accessed through the card host LSI. [0003] In addition, the external communication terminals of the microcomputer LSI generally include low-speed general-purpose port terminals mainly for serial communication and terminal control, and fast IO bus terminals mainly for parallel communication. Since the connection between the microcomputer LSI and the car...

Claims

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Application Information

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IPC IPC(8): G06F13/14G06F3/08G06F13/36G06K17/00
CPCG06F13/36G06F13/385
Inventor 平野雄久藤原睦笛浩一郎伊藤理惠盐见谦太郎
Owner PANASONIC SEMICON SOLUTIONS CO LTD
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