DP8344BV National Semiconductor, DP8344BV Datasheet - Page 2

• Manufacturer Part Number: DP8344BV
• Description: IC BIPHASE COMM PROCESSR 84-PLCC
• Manufacturer: National Semiconductor

Specifications of DP8344BV

• Processor Type: 8-Bit RISC
• Speed: 20MHz
• Voltage: 4.5 ~ 5.5V
• Mounting Type: Surface Mount
• Package / Case: 84-PLCC
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Mounting: Surface Mount
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: Not Compliant
• Other names: *DP8344BV

The DP8344B is an enhanced version of the DP8344A exhibiting improved switching performance and additional
functionality The device has been been characterized in a number of applications and found to be a compatible
replacement for the DP8344A Differences between the DP8344A and DP8344B are noted by shading of the text on the
pages of this data sheet For more information refer to Section 6 6
Note In this document XXX denotes a control or status bit in a register
1 0 COMMUNICATIONS PROCESSOR OVERVIEW
2 0 CPU DESCRIPTION
1 1 Communications Protocols
1 2 Internal Architecture Overview
1 3 Timing Overview
1 4 Data Flow
1 5 Remote Interface Overview
2 1 CPU Architectural Description
2 2 Functional Description
2 1 1 Register Set
2 1 2 Timer
2 1 3 Instruction Set
2 2 1 ALU
2 2 2 Timing
2 2 3 Interrupts
2 2 4 Oscillator
2 1 1 1 Banked Registers
2 1 1 2 Timing Control Registers
2 1 1 3 Interrupt Control Registers
2 1 1 4 Timer Registers
2 1 1 5 Transceiver Registers
2 1 1 6 Condition Code Remote Handshaking
2 1 1 7 Index Registers
2 1 1 8 Stack Registers
2 1 2 1 Timer Operation
2 1 3 1 Harvard Architecture Implications
2 1 3 2 Addressing Modes
2 1 3 3 Instruction Set Overview
Register
Table of Contents
2
3 0 TRANSCEIVER
4 0 REMOTE INTERFACE AND ARBITRATION SYSTEM
3 1 Transceiver Architectural Description
3 2 Transceiver Functional Description
4 1 RIAS Architectural Description
4 2 RIAS Functional Description
(RIAS)
3 1 1 Protocols
3 2 1 Transmitter
3 2 2 Receiver
3 2 3 Transceiver Interrupts
3 2 4 Protocol Modes
3 2 5 Line Interface
4 1 1 Remote Arbitration Phases
4 1 2 Access Types
4 1 3 Interface Modes
4 1 4 Execution Control
4 2 1 Buffered Read
4 2 2 Latched Read
4 2 3 Slow Buffered Write
4 2 4 Fast Buffered Write
4 2 5 Latched Write
4 2 6 Remote Rest Time
YYY denotes a register
3 1 1 1 IBM 3270
3 1 1 2 IBM 3299
3 1 1 3 IBM 5250
3 1 1 4 General Purpose 8-Bit
3 2 5 1 3270 Line Interface
3 2 5 2 5250 Line Interface