Extension for the advanced microcontroller bus architecture (AMBA)
    1.
    发明授权
    Extension for the advanced microcontroller bus architecture (AMBA) 有权
    扩展用于高级微控制器总线架构(AMBA)

    公开(公告)号:US06857037B2

    公开(公告)日:2005-02-15

    申请号:US10022380

    申请日:2001-11-30

    摘要: System (50), e.g. a System on a chip (SoC), comprising a system bus (56), a high-speed functional block (51) operably linked to the system bus (56), and a high-speed clock line (54) for applying a high-speed clock to the high-speed functional block (51). The system (50) further comprises a peripheral bus (59), a low-speed functional block (52) operably linked to this peripheral bus (59), a circuitry (53) for generating a wait signal (PWAIT), a low-speed clock line (57) for applying a low-speed clock (PCLK) to the low-speed functional block (52), a select line (58) for feeding a select signal (PSEL) from the peripheral bus (59) to the low-speed functional block (52), an enable line (55) for applying a clock enable signal (PCLKEN) to the circuitry (53), and a wait line (61) for feeding the wait signal (PWAIT) to the high-speed functional block (51). The circuitry (53) generates the wait signal (PWAIT) from the select line signal (PSEL) and the clock enable signal (PCLKEN).

    摘要翻译: 系统(50),例如 芯片上的系统(SoC),包括系统总线(56),可操作地连接到系统总线(56)的高速功能块(51)和用于施加高电平的高速时钟线(54) - 速度到高速功能块(51)。 系统(50)还包括外围总线(59),可操作地连接到该外围总线(59)的低速功能块(52),用于产生等待信号(PWAIT)的电路(53) 用于将低速时钟(PCLK)施加到低速功能块(52)的高速时钟线(57),用于将来自外围总线(59)的选择信号(PSEL)馈送到 低速功能块(52),用于向电路(53)施加时钟使能信号(PCLKEN)的使能线(55)以及用于将等待信号(PWAIT)馈送到高电平的等待线(61) 速度功能块(51)。 电路(53)根据选择线信号(PSEL)和时钟使能信号(PCLKEN)产生等待信号(PWAIT)。