![](http://datasheet.mmic.net.cn/280000/MC68SC302_datasheet_16094312/MC68SC302_9.png)
Table of Contents
Paragraph
Number
Title
Page
Number
MOTOROLA
MC68SC302 USER’S MANUAL
ix
4.6.2
4.6.3
4.6.3.1
4.6.3.2
4.6.3.2.1
4.6.3.2.2
4.6.3.2.3
4.7
4.7.1
4.7.1.1
4.7.2
4.7.3
4.7.4
4.7.4.1
4.7.4.2
4.7.4.3
4.7.4.4
4.7.5
4.8
SCP Clock and Data Relationship......................................................... 4-49
SCP Transmit/Receive Buffer Descriptor.............................................. 4-49
SCP Data Transmit/Receive Processing............................................... 4-50
SCP - Serial EEPROM interface........................................................... 4-50
16- Bit Address EEPROM..................................................................... 4-50
8-Bit Address EEPROM........................................................................ 4-51
Mixed Address EEPROM...................................................................... 4-52
Serial Management Controllers (SMCs)................................................ 4-52
SMC Overview ...................................................................................... 4-52
Using GCI with the SMCs...................................................................... 4-52
SMC Programming Model..................................................................... 4-54
SMC Commands................................................................................... 4-54
SMC Memory Structure and Buffers Descriptors.................................. 4-54
SMC1 Receive Buffer Descriptor .......................................................... 4-55
SMC1 Transmit Buffer Descriptor ......................................................... 4-56
SMC2 Receive Buffer Descriptor .......................................................... 4-56
SMC2 Transmit Buffer Descriptor ......................................................... 4-57
SMC Interrupt Requests........................................................................ 4-57
Revision Number................................................................................... 4-58
Section 5
ISA Plug and Play Interface
5.1
5.2
5.3
5.3.1
5.3.1.1
5.3.1.2
5.3.2
5.3.3
5.3.3.1
5.3.3.2
5.3.3.3
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
5.4.7
5.4.8
5.5
5.6
5.7
5.7.1
Introduction.............................................................................................. 5-1
Main Features ......................................................................................... 5-1
ISA Memory Map..................................................................................... 5-1
ISA I/O Address Space ........................................................................... 5-2
DPR Addressing...................................................................................... 5-4
CCR Addressing...................................................................................... 5-4
ISA Memory Address Space................................................................... 5-4
CCMR Structure...................................................................................... 5-4
DPR......................................................................................................... 5-5
Parameter RAM....................................................................................... 5-5
CCR Register Map.................................................................................. 5-5
ISA-PNP Configuration Programming..................................................... 5-7
Resource Data Layout in a Byte Serial Device ....................................... 5-7
Reading Resource Data.......................................................................... 5-9
I/O Configuration................................................................................... 5-10
Memory Configuration........................................................................... 5-11
IRQ Configuration.................................................................................. 5-12
Resource Management......................................................................... 5-12
Logical Device ID .................................................................................. 5-13
Unsupported Resources........................................................................ 5-13
ISA-PNP Card Level Control Registers................................................. 5-13
Logical Device Control Registers.......................................................... 5-19
ISA-PNP Configuration Registers ......................................................... 5-20
Access to Inactive Registers................................................................. 5-25