TS68020
HCMOS 32-bit Virtual Memory Microprocessor
Datasheet
Features
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Object Code Compatible with Earlier TS68000 Microprocessors
Addressing Mode Extensions for Enhanced Support of High Level Languages
New Bit Field Data Type Accelerates Bit-oriented Application, i.e. Video Graphics
Fast on-chip Instruction Cache Speed Instructions and Improves Bus Bandwidth
Co-processor Interface to Companion 32-bit Peripherals: TS68881 and TS68882 Floating Point Co-processors
Pipelined Architecture with High Degree of Internal Parallelism Allowing Multiple Instructions to be Executed Concurrently
High Performance Asynchronous Bus in Non-multiplexed and Full 32 Bits
Dynamic Bus Sizing Efficiently Supports 8-, 16-, 32-bit Memories and Peripherals
Full Support of Virtual Memory and Virtual Machine
Sixteen 32-bit General-purpose Data and Address Registers
Two 32-bit Supervisor Stack Pointers and 5 Special Purpose Control Registers
18 Addressing Modes and 7 Data Types
4-Gbyte Direct Addressing Range
Processor Speed: 16.67 MHz - 20 MHz - 25 MHz
Power Supply: 5.0 V
DC
± 10%
Description
The TS68020 is the first full 32-bit implementation of the TS68000 family of microprocessors. Using HCMOS technology,
the TS68020 is implemented with 32-bit registers and data paths, 32-bit addresses, a rich instruction set, and versatile
addressing modes.
Screening/Quality
This product is manufactured in full compliance with either:
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MIL-STD-883 (class B)
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DESC 5962 - 860320
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or according to e2v standards
See
“Ordering Information” on page 42.
Pin connection: see
page 4.
Visit our website: www.e2v.com
for the latest version of the datasheet
e2v semiconductors SAS 2007
0850B–HIREL–04/07
TS68020
R suffix
PGA 114
Ceramic Pin Grid Array
F suffix
CQFP 132
Ceramic Quad Flat Pac
1. Introduction
The TS68020 is a high-performance 32-bit microprocessor. It is the first microprocessor to have evolved
from a 16-bit machine to a full 32-bit machine that provides 32-bit address and data buses as well as 32-
bit internal structures. Many techniques were utilized to improve performance and at the same time
maintain compatibility with other processors of the TS68000 Family. Among the improvements are new
addressing modes which better support high-level language structures, an expanded instruction set
which provides 32-bit operations for the limited cases not supported by the TS68000 and several new
instructions which support new data types. For special-purpose applications when a general-purpose
processor alone is not adequate, a co-processor interface is provided.
The TS68020 is a high-performance microprocessor implemented in HCMOS, low power, small geome-
try process. This process allows CMOS and HMOS (high density NMOS) gates to be combined on the
same device. CMOS structures are used where speed and low power is required, and HMOS structures
are used where minimum silicon area is desired. This technology enables the TS68020 to be very fast
while consuming less power (less than 1.5 watts) and still have a reasonably small die size. It utilizes
about 190.000 transistors, 103.000 of which are actually implemented. The package is a pin-grid array
(PGA) with 114 pins, arranged 13 pins on a side with a depopulated center and 132 pins ceramic quad
flat pack.
Figure 1-1
is a block diagram of the TS68020. The processor can be divided into two main sections: the
bus controller and the micromachine. This division reflects the autonomy with which the sections
operate.
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TS68020
Figure 1-1.
TS68020 Block Diagram
The bus controller consists of the address and data pads and multiplexers required to support dynamic
bus sizing, a macro bus controller which schedules the bus cycles on the basis of priority with two state
machines (one to control the bus cycles for operated accesses and the other to control the bus cycles for
instruction accesses), and the instruction cache with its associated control.
The micromachine consists of an execution unit, nanorom and microrom storage, an instruction decoder,
an instruction pipe, and associated control sections. The execution unit consists of an address section,
an operand address section, and a data section. Microcode control is provided by a modified two-level
store of microrom and nanorom. Programmed logical arrays (PLAs) are used to provide instruction
decode and sequencing information. The instruction pipe and other individual control sections provide
the secondary decode of instructions and generated the actual control signals that result in the decoding
and interpretation of nanorom and micorom information.
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TS68020
Figure 1-2.
PGA Terminal Designation
Figure 1-3.
CQFP Terminal Designation
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TS68020
Figure 1-4.
Functional Signal Groups
2. Signal Description
Figure 1-4
illustrates the functional signal groups and
Table 2-1
lists the signals and their function.
The V
CC
and GND pins are separated into four groups to provide individual power supply connections for
the address bus buffers, data bus buffers, and all other output buffers and internal logic.
Group
Address Bus
Data Bus
Logic
Clock
V
CC
A9, D3
M8, N8, N13
D1, D2, E3, G11, G13
GND
A10, B9,C3, F12
L7, L11, N7, K3
G12, H13, J3, K1
B1
–
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