Z89320 Datasheet, PDF (2/7 Pages) Zilog, Inc. – 16-BIT DSP DIGITAL SIGNAL PROCESSOR

GENERAL DESCRIPTION (Continued)
Register
Pointer
0-2
256 Word
RAM
0
256 Word
RAM
1
Register
Pointer
4-6
Instruction
Register
S-Bus
16-Bit Bus
Switch
X
Y
16 x16
Multiplier
24-bit P
24
24-Bit Bus
P Bus
MUX
Shifter
B
A
ALU
Switch
D Bus
Stack
Status
(5)
PC
4K
Word
ROM
Ready
16-bit
I/O
Port
16
EXT0-15
/RDYE,
ER//W,
/EI
3
EA0-2
Interrupt
User
Port
3
INTO-2
/RESET
2
UI0-1
2
UO0-1
ACC
Functional Block Diagram
2