SAB82C257 SIEMENS [Siemens Semiconductor Group], SAB82C257 Datasheet - Page 2

• Manufacturer Part Number: SAB82C257
• Description: Advanced DMA Controller for 16-Bit Microcomputer Sytems (ADMA)
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Advanced DMA Controller
for 16-Bit Microcomputer Sytems (ADMA)
Siemens Aktiengesellschaft
Addr.
Data
Bus
Control
Signals
CLK
RESET
Block Diagram SAB 82C258A
Bus Interface
Incrementer
Temp. Data
Data Path
Generator
Registers
Counters
Address
Control
Control
Timing
Burst
Unit
Bus
&
Registers
Registers
Registers
L
a
c
h
t
Match
Mask
Data
Data Handler
Address Unit
Registers
Pointer
ALU
Internal Data Bus
2
A
U
L
Internal Channel
Byte Count Unit
Multiplexer
Requests
Command
Registers
Registers
Registers
Counters
Channel
Channel
Control
Status
Byte
Central Control
Instruction
instruction
Instruction
Registers
Registers
Registers
Pipeline
Priority
Pointer
Micro-
Cache
Logic
ROM
SAB 82C258A
SAB 82C257
ITS05934
Channel
Control
Signals