R1121 Datasheet, PDF (3/5 Pages) RDC Semiconductor – 16 Bit RISC Micro Processor

RDC®
RISC DSP Communication
2. Block Diagram
R1121
16 Bit RISC Micro Processor
CLKOUTA
INT2/INTA0
INT1/SELECT
INT3/INTA1/IRQ
CLKOUTB INT6-INT4
INT0 NMI
X1 ^X2
Clock and
VCC
Power
GND
Management
Interrupt
Control Unit
TMROUT0 TMROUT1
TMRIN0 TMRIN1
Timer Control
Unit
RST
LCS/ONCE0
UCS/ONCE1
MCS0/RAS
MCS1/UCAS
MCS2/LCAS
MCS3/RFSH
PCS5/A1
PCS6/A2
Chip
Select
Unit
DRAM
Control
Unit
ARDY
SRDY
S2~S0
DT/R
DEN
HOLD
HLDA
S6/CLKDIV2
UZI
Refresh
Control
Unit
Bus
Interface
Unit
Instruction
Queue (64bits)
Instruction
Decoder
Control Signal
Register
File
General,
Segment,
Eflag Register
Micro
ROM
EA / LA
Address
ALU
(Special,
Logic,
Adder,
BSF)
Execution
Unit
DRQ0
DRQ1
DMA
Unit
PIO
Unit
Asynchro-
nous Serial
Port0
Asynchro-
nous Serial
Port1
RTS0/RTR0
CTS0/ENRX0
TXD0
RXD0
RTS1/RTR1
CTS1/ENRX1
TXD1
RXD1
A19-A0(MA8-MA0)
AD15~AD0
ALE
RD
WHB
WLB
WR
BHE/ADEN
Specifications subject to change without notice, contact your sales representatives for the most update information.
RDC Confidential
Page 3 of 5
REV 1.0 May. 03 2007