Z8018x Family
MPU User Manual
147
Internal Address/Data Bus
Phi
TXS
RXS
CKS
CSI/O Transmit/Receive
Data Register:
TRDR (8)
Baud Rate
Generator
CSI/O Control Register:
CNTR (8)
Interrupt Request
Figure 57. CSI/O Block Diagram
CSI/O Registers Description
CSI/O Control/Status Register (CNTR: I/O Address 0AH)
CNTR is used to monitor CSI/O status, enable and disable the CSI/O,
enable and disable interrupt generation, and select the data clock speed
and source.
CSI/O Control/Status Register (CNTR: 0AH)
Bit
7
EF
R
6
EIE
R/W
0
5
RE
R/W
0
4
TE
R/W
0
3
2
SS2
R/W
1
1
SS1
R/W
1
0
SS0
R/W
1
Bit/Field
R/W
—
Reset
0
Note: R = Read W = Write X = Indeterminate ? = Not Applicable
UM005001-ZMP0400
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