R DC
Contents
RISC DSP Controller
R8820LV
RDC Semiconductor Co.
Rev:1.0
Subject to change without notice
2
---------------------------------------------------------------------------------------
page
1. Features
-------------------------------------------------------------------------------- 4
2. Block Diagram
------------------------------------------------------------------------ 4
3. Pin Configuration
-------------------------------------------------------------------- 5
4. Pin Description
------------------------------------------------------------------------ 8
5. Basic Application System Block
& Read/Write timing Diagram
----------14
6. Oscillator Characteristics
----------------------------------------------------------17
7. Execution Unit
-----------------------------------------------------------------------18
7.1
General Register
-----------------------------------------------------------------18
7.2
Segment Register
----------------------------------------------------------------18
7.3
Instruction Pointer and Status Flags Register
--------------------------------19
7.4
Address Generation
-------------------------------------------------------------20
8. Peripheral Control Block Register
-----------------------------------------------21
9. System Clock Block
-----------------------------------------------------------------23
10. Reset
----------------------------------------------------------------------------------24
11. Bus Interface Unit
------------------------------------------------------------------26
11.1
Memory and I/O Interface
----------------------------------------------------26
11.2
Data Bus
-------------------------------------------------------------------------26
11.3
Wait States
----------------------------------------------------------------------27
11.4
Bus Hold
------------------------------------------------------------------------28
11.5 Bus Width
----------------------------------------------------------------------30
12. Chip Select Unit
--------------------------------------------------------------------31
12.1
UCS
----------------------------------------------------------------------------31
12.2
LCS
----------------------------------------------------------------------------32
12.3
MCSx
--------------------------------------------------------------------------33
12.4
PCSx
---------------------------------------------------------------------------34
13. Interrupt Controller Unit
---------------------------------------------------------37
13.1
Master Mode and Slave Mode
------------------------------------------------37
13.2
Interrupt Vector, Type and Priority
------------------------------------------38
13.3
Interrupt Request
--------------------------------------------------------------39
13.4
Interrupt Acknowledge
--------------------------------------------------------39
13.5
Programming Register
---------------------------------------------------------40