Z80181 Zilog., Z80181 Datasheet - Page 21

• Manufacturer Part Number: Z80181
• Description: SMART ACCESS CONTROLLER (SAC)
• Manufacturer: Zilog.

Zilog
DS971800500
Upon Reset
Upon Reset
R/W
R/W
Bit
Bit
STAT1
STAT0
RDRF OVRN
RDRF OVRN
R
0
R
0
†† /CTS
† /DCD
R
0
R
0
L
H
0
0
Pin
- Depending on the condition of /DCD
PE
PE
Figure 12. ASCI Status Register (Ch. 1)
R
0
R
0
Figure 11. ASCI Status Register
TDRE
0
1
FE
FE
R
0
R
0
R/W
RIE
R/W
RIE
0
0
CTS1E
/DCD
R/W
0
R
†
0
TDRE
TDRE
R
††
1
R
Addr 05h
0
Addr 04h
Pin.
R/W
TIE
R/W
TIE
0
0
Transmit Interrupt Enable
Transmit Data Register
Empty
/CTS1 Enable
Receive Interrupt Enable
Framing Error
Parity Error
Over Run Error
Receive Data Register Full
Transmit Interrupt Enable
Transmit Data Register
Empty
Data Carrier Detect
Receive Interrupt Enable
Framing Error
Parity Error
Over Run Error
Receive Data Register Full
S
MART
A
CCESS
C
ONTROLLER
Z80181
2-21
SAC
™