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    參數(shù)資料
    型號: 935242210557
    廠商: NXP SEMICONDUCTORS
    元件分類: 消費家電
    英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP160
    封裝: PLASTIC, SOT-322, QFP-160
    文件頁數(shù): 75/147頁
    文件大?。?/td> 526K
    代理商: 935242210557
    1998 Apr 09
    33
    Philips Semiconductors
    Product specication
    Multimedia bridge, high performance
    Scaler and PCI circuit (SPCI)
    SAA7146A
    Table 10 Main control register 1
    OFFSET
    (HEX)
    NAME
    BIT
    TYPE
    DESCRIPTION
    Mask word
    FC
    M15 to M00
    31 to 16
    RW
    16-bit mask word for bit-selective writes to the control word; when
    read these bits always return logic 0
    Control word
    FC
    MRST_N
    15
    RW
    Master Reset Not: this is the master reset for the SAA7146A. Writing
    a logic 0 to this bit will reset the SAA7146A to the same state as after
    a power-on reset. When read this bit always returns a logic 0.
    14
    reserved: when read this bit always returns a logic 0
    ERPS1
    13
    RW
    Enable Register Program Sequencer Task 1: if ERPS1 = 1, then
    any RPS Task 1 action is enabled. If ERPS1 = 0, then RPS Task 1
    action does not fetch any more commands.
    ERPS0
    12
    RW
    Enable Register Program Sequencer Task 0: if ERPS0 = 1, then
    any RPS Task 0 action is enabled. If ERPS0 = 0, then RPS Task 0
    action does not fetch any more commands.
    EDP
    11
    RW
    Enable DEBI Port pins: if EDP = 0, all pins of the DEBI port are set
    to 3-state. If EDP = 1, then the function of all pins at the DEBI port is
    as programmed via the DEBI registers.
    EVP
    10
    RW
    Enable Real Time Video Ports pins: if EVP = 0, all 24 pins of the
    real time video interface (DD1 port) are 3-stated. If EVP = 1, then the
    function of all pins at the real time video interface (DD1 port) is as
    programmed by the scaler register; see Table 66.
    EAP
    9
    RW
    Enable Audio Port pins: if EAP = 0, all 14 pins of the audio interface
    port are set to 3-state. If EAP = 1, then the function of all pins at the
    audio interface is as programmed in Section 7.16.3.
    EI2C
    8
    RW
    Enable I2C Port pins: if EI2C = 0, then both pins of the I2C-bus
    interface port are set to 3-state. If EI2C = 1, then the I2C-bus interface
    is enabled and will function as programmed in Section 7.17.2.
    TR_E_DEBI
    7
    RW
    Transfer Enable bit of the DEBI.
    TR_E_1
    6
    RW
    Transfer enable bit of video Channel 1: if set this channel is included
    in the internal arbitration scheme. If not set, this channel will be
    ignored and no transfer will start using this FIFO.
    TR_E_2
    5
    RW
    Transfer Enable bit of video channel 2
    TR_E_3
    4
    RW
    Transfer Enable bit of video channel 3
    TR_E_A2_OUT
    3
    RW
    Transfer Enable bit of audio channel 2 out
    TR_E_A2_IN
    2
    RW
    Transfer Enable bit of audio channel 2 in
    TR_E_A1_OUT
    1
    RW
    Transfer Enable bit of audio channel 1 out
    TR_E_A1_IN
    0
    RW
    Transfer Enable bit of audio channel 1 in
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