CS98100 데이터 시트보기 (PDF) - Cirrus Logic

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CS98100

DVD Processor for Low Cost DVD Players

Cirrus Logic 

CS98100

6.2 Serial Interface

There are two 2-wire serial controllers, which sup-

port industry standard protocols. One controller is

a combination master/slave, and is typically used

for debug (slave), or to control a small non-volatile

memory (master). The slave chip select address is

programmable and defaults to a 7-bit value of

0x1A. The second 2-wire controller is a dedicated

master and can be used for controlling certain DVD

devices. A third serial controller in the device sup-

ports industry standard 3-wire and 4-wire proto-

cols. In master mode, this interface can control a

front panel or a small non-volatile memory. In

slave mode, it can operate under control of an ex-

ternal processor, for example, in a combination

unit.

Pin

Signal Name

Type

Description

139

MS_SCL1

B Clock for 2-wire serial port #1 (master/slave port)

140

MS_SDA1

B Data for 2-wire serial port #1 (master/slave port)

142

M_SCL2

B Clock for 2-wire serial port #2 (master)

143

M_SDA2

B Data for 2-wire serial port #2 (master)

119

SER_CLK

B Clock for 4-wire serial port (output for master mode, input

for slave mode)

117

SER_DO

B Output data for 4-wire serial port – may function as bi-

directional data in 3-wire mode.

118

SER_DI

B Input data for 4-wire serial port

115

SER_CS

B Chip select for 4-wire serial port (output for master mode,

input for slave mode). Can also be used as bi-directional

ready line.

Table 17. Serial Interface Pin Assignments

47

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