參數(shù)資料
型號: L64777
廠商: LSI CORP
元件分類: 消費家電
英文描述: Digital Video Broadcasting(DVB)-Compliant,quadrature amplitude modulation (QAM)Modulator(數(shù)字視頻廣播系統(tǒng)適配的積分調(diào)幅調(diào)制器)
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP120
封裝: 32 MM, PLASTIC, QFP-120
文件頁數(shù): 103/124頁
文件大?。?/td> 988K
代理商: L64777
L64777 DVB QAM Modulator Technical Manual
A-1
Appendix A
Programming the
L64777 in Serial Host
Interface Mode
This appendix discusses how to program the L64777 internal registers
and data tables in serial host interface mode. This chapter is intended
primarily for system programmers who are developing software drivers
using the serial bus.
This appendix contains the following sections:
Section A.1, “Serial Bus Protocol Overview,” page A-1, provides a
high-level overview of the serial bus protocol.
Section A.2, “Programming the Slave Address Using the Serial Bus
Interface,” page A-4, shows how the slave address is formed and
transmitted.
Section A.3, “Write Cycle Using the Serial Bus Interface,” page A-4,
shows an example of a serial bus write cycle.
Section A.4, “Read Cycle Using the Serial Bus Interface,” page A-5,
shows an example of a serial bus read cycle.
Section A.5, “Limitations,” page A-7, shows the limitations of the
L64777
A.1 Serial Bus Protocol Overview
The multimaster serial bus interface has two 1-bit lines—SDA (Serial
Data) and SCL (Serial Clock)—that are connected to the bus as shown
in Figure A.1. External pullup resistors hold the bus at a logic 1 value
when the bus is not in operation.
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