Datasheet

Register Map
MC68HC812A4 Data Sheet, Rev. 7
Freescale Semiconductor 197
16.4 Register Map
NOTE
The register block can be mapped to any 2-Kbyte boundary within the
standard 64-Kbyte address space. The register block occupies the first 512
bytes of the 2-Kbyte block. This register map shows default addressing
after reset.
Addr.Register Name Bit 7654321Bit 0
$0060
ATD Control Register 0
(ATDCTL0)
See page 199.
Read:
00000000
Write:
Reset:00000000
$0061
ATD Control Register 1
(ATDCTL1)
See page 199.
Read: 0 0 0 00000
Write:
Reset:00000000
$0062
ATD Control Register 2
(ATDCTL2)
See page 200.
Read:
ADPU AFFC AWAI
000
ASCIE
ASCIF
Write:
Reset:00000000
$0063
ATD Control Register 3
(ATDCTL3)
See page 201.
Read: 0 0 0 0 0 0
FRZ1 FRZ0
Write:
Reset:00000000
$0064
ATD Control Register 4
(ATDCTL4)
See page 201.
Read: 0
SMP1 SMP0 PRS4 PRS3 PRS2 PRS1 PRS0
Write:
Reset:00000001
$0065
ATD Control Register 5
(ATDCTL5)
See page 202.
Read: 0
S8CM SCAN MULT CD CC CB CA
Write:
Reset:00000000
$0066
ATD Status Register 1
(ATDSTAT1)
See page 204.
Read: SCF 0 0 0 0 CC2 CC1 CC0
Write:
Reset:00000000
$0067
ATD Status Register 2
(ATDSTAT2)
See page 204.
Read: CCF7 CCF6 CCF5 CCF4 CCF3 CCF2 CCF1 CCF0
Write:
Reset:00000000
$0068
ATD Test Register 1
(ATDTEST1)
See page 205.
Read:
SAR9 SAR8 SAR7 SAR6 SAR5 SAR4 SAR3 SAR2
Write:
Reset:00000000
$0069
ATD Test Register 2
(ATDTEST2)
See page 205.
Read:
SAR1 SAR0 RST TSTOUT TST3 TST2 TST1 TST0
Write:
Reset:00000000
= Unimplemented
Figure 16-2. ATD I/O Register Summary