Figure 2-1. Mc68306 Detailed Block Diagram - Motorola MC68306 User Manual

DRAMW
RAS1
DRAM
RAS0
CONTROLLER
CAS1
CAS0
EXTAL
XTAL CLOCK
CLKOUT
MODE
AMODE
CONTROLLER
JTAG
PORT
TRST
IRQ7
IRQ4
INTERRUPT
IRQ1
CONTROLLER
IACK7
IACK4
IACK1
IRQ6/PB7
IRQ5/PB6
IRQ3/PB5
IRQ2/PB4
PORT B
IACK6/PB3
IACK5/PB2
IACK3/PB1
IACK2/PB0
2-2
CHIP
SELECTS
PORT A

Figure 2-1. MC68306 Detailed Block Diagram

MC68306 USER'S MANUAL
EC000
CORE
PROCESSOR
TWO-
16-BIT
CHANNEL
TIMER/
SERIAL
COUNTER
I/O
FLOW
CONTROL
A19–A16
A15/DRAMA14–A1/DRAMA0
D15–D0
FC2–FC0
RESET
BERR
HALT
AS
UDS
LDS
R/W
UW
LW
OE
DTACK
BR
BG
BGACK
X2
X1/CLK
RxDA
TxDA
RxDB
TxDB
RTSB/OP1
RTSA/OP0
CTSB/IP1
CTSA/IP0
MOTOROLA