IA8044 Datasheet, PDF (12/49 Pages) InnovASIC, Inc – SDLC COMMUNICATIONS CONTROLLER

IA8044/IA8344
SDLC COMMUNICATIONS CONTROLLER
Data Sheet
Special Function Registers
The IA8044/IA8344 contains the following special function registers:
Symbol
Register Description
ACC
B
PSW
SP
DPH
DPL
P0
P1
P2
P3
IP
IE
TMOD
TCON
TH0
TL0
TH1
TL1
SMD
STS
NSNR
STAD
TBS
TBL
TCB
RBS
RBL
RFL
RCB
DMA CNT
FIFO
SIUST
Accumulator
B register
Program Status Word
Stack Pointer
Data Pointer High Byte
Data Pointer Low Byte
Port 0
Port 1
Port 2
Port 3
Interrupt Priority
Interrupt Enable
Timer/Counter Mode
Timer/Counter Control
Timer/Counter 0 high byte
Timer/Counter 0 low byte
Timer/Counter 1 high byte
Timer/Counter 1 low byte
Serial Mode
SIU Status and Command
SIU Send/Receive Count
SIU Station Address
Transmit Buffer Start Address
Transmit Buffer Length
Transmit Control Byte
Receive Buffer Start Address
Receive Buffer Length
Receive Field Length
Receive Control Byte
DMA Count
FIFO contents (3 bytes)
SIU State Counter
Byte
Address(Hex)
E0h
F0h
D0h
81h
82h
83h
80h
90h
A0h
B0h
B8h
A8h
89h
88h
8Ch
8Ah
8Dh
8Bh
C9h
C8h
D8h
CEh
DCh
DBh
DAh
CCh
CBh
CDh
CAh
CFh
DF,DE,DDh
D9h
Bit Addresses (Hex)
(MSB - LSB)
E7h – E0h
F7h – F0h
D7h – D0h
-
-
-
87h – 80h
97h – 90h
A7h – A0h
B7h – B0h
BCh – B8h
AFh,ACh – A8h
-
8Fh – 88h
-
-
-
-
-
CFh – C8h
DFh – D8h
-
-
-
-
-
-
-
-
-
-
-
Copyright © 2003
innovASIC
The End of Obsolescence™
ENG210010112-00
Page 12 of 49
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