Motorola MC68306 User Manual page 5

TABLE OF CONTENTS (Continued)
Paragraph Page
Number Title Number
2.3 DRAM Controller Signals........................................................................................ 2-9
2.3.1 Column Address Strobe (CAS1- CAS0 )............................................................... 2-9
2.3.2 Row Address Strobe (RAS1 -RAS0) .................................................................... 2-9
2.3.3 DRAM Write Signal (DRAMW) ............................................................................. 2-9
2.4 Interrupt Control and Parallel Port Signals ............................................................. 2-9
2.4.1 Interrupt Request (IRQ7-IRQ1) ........................................................................... 2-9
2.4.2 Interrupt Acknowledge (IACK7-IACK1) ............................................................... 2-9
2.4.3 Port A Signals (PA7-PA0) ................................................................................... 2-9
2.4.4 Port B (PB7-PB0) ................................................................................................ 2-9
2.5 Clock and Mode Control Signals ............................................................................ 2-10
2.5.1 Crystal Oscillator (EXTAL, XTAL) ........................................................................ 2-10
2.5.2 Clock Out (CLKOUT) ........................................................................................... 2-10
2.5.3 Address Mode (AMODE) ..................................................................................... 2-10
2.6 Serial Module Signals ............................................................................................. 2-10
2.6.1 Channel A Receiver Serial-Data Input (RxDA) .................................................... 2-10
2.6.2 Channel A Transmitter Serial-Data Output (TxDA) ............................................. 2-10
2.6.3 Channel B Receiver Serial-Data Input (RxDB) .................................................... 2-10
2.6.4 Channel B Transmitter Serial-Data Output (TxDB) ............................................. 2-10
2.6.5 CTSA ................................................................................................................... 2-11
2.6.6 RTSA ................................................................................................................... 2-11
2.6.7 CTSB ................................................................................................................... 2-11
2.6.8 RTSB ................................................................................................................... 2-11
2.6.9 Crystal Oscillator (X1, X2) ................................................................................... 2-11
2.6.10 IP2 ..................................................................................................................... 2-11
2.6.11 OP3 ................................................................................................................... 2-11
2.7 JTAG Port Test Signals .......................................................................................... 2-11
2.7.1 Test Clock (TCK) ................................................................................................. 2-12
2.7.2 Test Mode Select (TMS)...................................................................................... 2-12
2.7.3 Test Data In (TDI) ................................................................................................ 2-12
2.7.4 Test Data Out (TDO) ........................................................................................... 2-12
2.7.5 Test Reset (TRST) .............................................................................................. 2-12
Section 3
68000 Bus Operation Description
3.1 Data Transfer Operations ....................................................................................... 3-1
3.1.1 Read Cycle .......................................................................................................... 3-1
3.1.2 Write Cycle .......................................................................................................... 3-4
3.1.3 Read-Modify-Write Cycle..................................................................................... 3-7
3.1.4 CPU Space Cycle ................................................................................................ 3-11
vi MC68306 USER'S MANUAL MOTOROLA