RDC
®
RISC DSP Communication
R1122I
16-BIT RISC MICROCONTROLLER
2.
Block Diagram
INT2/INTA0
INT1/SELECT
CLKOUTA
INT3/INTA1/IRQ
CLKOUTB
INT4
INT0 NMI
TMROUT0
TMROUT1
TMRIN0
TMRIN1
DRQ0
DRQ1
X1
X2
PLL
VCC
GND
Clock & Power
Management
Interrupt
Control Unit
Timer Control
Unit
DMA
Unit
RST
LCS/ONCE0
MCS3/RFSH
MCS2-MCS0
UCS/ONCE1
PCS3-PCS0
PCS5/A1
PCS6/A2
Chip
Select
Unit
PSRAM
Control
Unit
Instruction
Queue (64bits)
Instruction
Decoder
Control Signal
Micro
ROM
PIO
Unit
ARDY
SRDY
S2~S0
DT/R
DEN
Refresh
Control
Unit
Register
File
General,
Segment,
Eflag Register
EA / LA
Address
Asynchro-
nous Serial
Port
TXD
RXD
HOLD
HLDA
S6/CLKDIV2
UZI
Bus
Interface
Unit
ALU
(Special,
Logic,
Adder,
BSF)
Execution
Unit
Synchronous
Serial Interface
SCLK
A19~A0
AD15~AD0
ALE
RD
WHB
WLB
SDATA
SDEN0 SDEN1
WR
BHE/ADEN
Specifications subject to change without notice, contact your sales representatives for the most update information.
Page
3 of
5
REV
1.0
Jun.13 2006
RDC [ RDC SEMICONDUCTOR ]
