mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 235

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

16.1 Contents
16.2 Introduction
MC68HC908LD64
Freescale Semiconductor
Data Sheet — MC68HC908LD64
—
Rev. 3.0
16.2
16.3
16.4
16.5
16.6
16.6.1
16.6.2
16.6.3
16.6.4
16.6.5
16.6.6
16.6.7
16.7
This DDC12AB Interface module is used by the digital monitor to show
its identification information to the video controller. It contains DDC1
hardware and a two-wire, bidirectional serial bus which is fully
compatible with multi-master IIC bus protocol to support DDC2AB
interface.
This module not only can be applied in internal communications, but can
also be used as a typical command reception serial bus for factory setup
and alignment purposes. It also provides the flexibility of hooking
additional devices to an existing system for future expansion without
adding extra hardware.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Programming Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 248
I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
DDC Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
DDC Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
DDC Address Register (DDCADR) . . . . . . . . . . . . . . . . . . 238
DDC2 Address Register (DDC2ADR) . . . . . . . . . . . . . . . . 239
DDC Control Register (DDCCR) . . . . . . . . . . . . . . . . . . . . 240
DDC Master Control Register (DDCMCR) . . . . . . . . . . . . . 241
DDC Status Register (DDCSR) . . . . . . . . . . . . . . . . . . . . . 244
DDC Data Transmit Register (DDCDTR) . . . . . . . . . . . . . . 246
DDC Data Receive Register (DDCDRR) . . . . . . . . . . . . . . 247
DDC12AB Interface
Section 16. DDC12AB Interface
Data Sheet
235