R1121 RDC [RDC Semiconductor], R1121 Datasheet - Page 3

• Manufacturer Part Number: R1121
• Description: 16 Bit RISC Micro Processor
• Manufacturer: RDC [RDC Semiconductor]

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