z80189 ZiLOG Semiconductor, z80189 Datasheet - Page 150
z80189
Manufacturer Part Number
z80189
Description
Z80180, Z8s180, Z8l180 Mpu Operation
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z80189.pdf
(326 pages)
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ASCI0 Extension Control Register (I/O Address: 12H) (Z8S180/L180-Class Processors
Only)
Bit
Bit/Field
R/W
Reset
Note: R = Read W = Write X = Indeterminate ? = Not Applicable
Bit
Position Bit/Field
7
6
5
4
3
2
1
RDRF
Interrupt
Inhibit
DCD0
Disable
CTS0
Disable
X1 Bit
Clk
ASCI0
BRG0
Mode
Break
Feature
Enable
Break
Detect
(RO)
RDRF
Inhibit
R/W
Int
7
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Disable
DCD0
R/W
6
0
Value Description
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Disable
CTS0
R/W
5
0
RDRF Interrupt Inhibit On
RDRF Interrupt Inhibit Off
DCD0 Auto-enables Rx
DCD0 advisory to SW
CTS0 Auto-enable Tx
CTS0 advisory to SW
CKA0 /16 or /64
CKA0 is bit clock
As S180
Enable 16-bit BRG counter
Break Feature Enable On
Break Feature Enable Off
Break Detect On
Break Detect Off
X1 Bit
ASCI0
R/W
Clk
4
0
BRG0
Mode
R/W
3
0
Family MPU User Manual
Feature
Enable
Break
R/W
2
0
Detect
Break
UM005003-0703
(RO)
R/W
1
0
Z8018x
Break
Send
R/W
0
0
135
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