参数资料
型号: PSD511B1
英文描述: PSD5XX/ZPSD5XX FAMILY FIELD-PROGRAMMABLE MICROCONTROLLER PERIPHERALS
中文描述: PSD5XX/ZPSD5XX家庭领域,可编程微控制器外设
文件页数: 84/153页
文件大小: 1036K
代理商: PSD511B1
PSD5XX Famly
81
Address
Ofset
Register Name
Address
Ofset
Register Name
+A9h
STATUS FLAGS
+A8h
GLOBAL COMMAND
+A6h
DLCY
+A5h
SOFTWARE LOAD/STORE
+A4h
FREEZE COMMAND
+A3h
CMD3
+A2h
CMD2
+A1h
CMD1
+A0h
CMD0
+9Fh
CNTR3
+9Eh
CNTR3
+9Dh
CNTR2
+9Ch
CNTR2
+9Bh
CNTR1
+9Ah
CNTR1
+99h
CNTR0
+98h
CNTR0
+97h
IMG3
+96h
IMG3
+95h
IMG2
+94h
IMG2
+93h
IMG1
+92h
IMG1
+91h
IMG0
+90h
IMG0
Table 23. Ofset Address Map of Counter/Timer-Unit Registers
Counter/Timer
Operation
(Cont.)
9.6.2 Counter/Timer Registers
Registers CNTR0,CNTR1,CNTR2 and CNTR3 serve as actual counting logic. Registers
IMG0,IMG1,IMG2 and IMG3 serve as images of these Counter/Timers. Depending upon the
selected mode of operation, a Counter can load a new value or transfer its content to the
image register. Registers IMG0 - IMG3 and CNTR0 - CNTR3 are accessible to the
Microcontroller only before setting the start bit (Bit 1 in the Global Command Register).
When CNTR0-CNTR3 are active, the value in the read operation is not guaranteed to be
stable and during a write operation there could be contention between the image register
write and microcontroller write. Therefore the access of registers CNTR0-CNTR3 should
be suspended when the Counter/Timers are active. Only IMG0, IMG1, IMG2 and IMG3
registers are accessible when the Counter/Timers are active.
Tables 23 and 23a give the address map for the various port and Counter/Timer-unit
registers. This address offset map is of the host processor, relative to CSIOP (Chip Select
Input Output Port) i.e. address space allocated by the host Microcontroller to access all the
PSD5XX embedded peripherals.
Table 23a is for 16-bit Motorola Microcontrollers which require different address offsets.
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