參數(shù)資料
        型號(hào): M3720-3
        廠商: Electronic Theatre Controls, Inc.
        英文描述: 1 KEY 1 SOUND
        中文描述: 1鍵1聲
        文件頁數(shù): 50/121頁
        文件大小: 1907K
        代理商: M3720-3
        MITSUBISHI MICROCOMPUTERS
        M37207MF-XXXSP/FP, M37207M8-XXXSP
        M37207EFSP/FP
        SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
        and ON-SCREEN DISPLAY CONTROLLER
        50
        The display position in the vertical direction is determined by count-
        ing the horizontal sync signal (H
        SYNC
        ). At this time, when V
        SYNC
        and
        H
        SYNC
        are positive polarity (negative polarity), it starts to count the
        rising edge (falling edge) of H
        SYNC
        signal from after fixed cycle of
        rising edge (falling edge) of V
        SYNC
        signal. So interval from rising edge
        (falling edge) of V
        SYNC
        signal to rising edge (falling edge) of H
        SYNC
        signal needs enough time (2 machine cycles or more) for avoiding
        jitter. The polarity of H
        SYNC
        and V
        SYNC
        signals can select with the
        CRT port control register (address 00EC
        16
        ).
        Fig. 48. Vertical Position Register i
        Fig. 47. Supplement Explanation for Display Position
        When bits 0 and 1 of the CRT port control register
        (address 00EC
        16
        ) are set to “1” (negative polarity)
        V
        SYNC
        signal input
        V
        control
        signal in
        microcomputer
        Period of counting
        H
        SYNC
        signal
        0.125 to 0.50 [
        μ
        s]
        ( at f(X
        IN
        ) = 8MHz)
        (Note 2)
        H
        signal input
        Not count
        1
        2
        3
        4
        5
        Notes 1 :
        The vertical position is determined by counting falling edge of H
        SYNC
        signal after rising edge of V
        SYNC
        control signal in the microcomputer.
        2 :
        Do not generate falling edge of H
        SYNC
        signal near rising edge of
        V
        SYNC
        control signal in microcomputer to avoid jitter.
        8 machine cycles
        or more
        8 machine cycles
        or more
        b7 b6 b5 b4 b3 b2 b1 b0
        Vertical position register i (CVi) (i = 1 to 3) [Addresses 00E1
        16
        to 00E3
        16
        ]
        B
        Name
        Functions
        After reset
        R W
        Vertical Position Register i
        0
        to
        6
        7
        Vertical display start positions
        (CVi : CVi0 to CVi6)
        128 steps (00
        16
        to 7F
        16
        )
        Indeterminate
        0
        Nothing is assigned. This bit is a write disable bit.
        When this bit is read out, the value is “0.”
        R W
        R —
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        相關(guān)代理商/技術(shù)參數(shù)
        參數(shù)描述
        M3720-4 制造商:未知廠家 制造商全稱:未知廠家 功能描述:1 KEY 1 SOUND
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        M37207EFFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER and ON-SCREEN DISPLAY CONTROLLER