參數(shù)資料
型號： MC68331CFC20B1
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 20 MHz, MICROCONTROLLER, PQFP132
封裝： 0.950 X 0.950 INCH, 0.025 INCH PITCH, PLASTIC, QFP-132
文件頁數(shù)： 73/90頁
文件大?。?/td> 481K
代理商： MC68331CFC20B1
MC68331
MOTOROLA
MC68331TS/D
75
6.4 GPT Registers
The GPTMCR contains parameters for configuring the GPT.
STOP — Stop Clocks
0 = Internal clocks not shut down
1 = Internal clocks shut down
FRZ1 — Not implemented at this time
FRZ0 — FREEZE Response
0 = Ignore FREEZE
1 = FREEZE the current state of the GPT
STOPP — Stop Prescaler
0 = Normal operation
1 = Stop prescaler and pulse accumulator from incrementing. Ignore changes to input pins.
INCP — Increment Prescaler
0 = Has no meaning
1 = If STOPP is asserted, increment prescaler once and clock input synchronizers once.
SUPV — Supervisor/Unrestricted Data Space
0 = Registers with access controlled by SUPV bit are accessible from either user or supervisor priv-
ilege level.
1 = Registers with access controlled by SUPV bit are restricted to supervisor access only.
IARB — Interrupt Arbitration Field
The IARB field is used to arbitrate between simultaneous interrupt requests of the same priority. Each
module that can generate interrupt requests must be assigned a unique, non-zero IARB field value. Re-
fer to 3.8 Interrupts for more information.
MTR — GPT Module Test Register (Reserved)
$YFF902
This address is currently unused and returns zeros if read. It is reserved for GPT factory test.
IPA — Interrupt Priority Adjust
Specifies which GPT interrupt source is given highest internal priority
IPL — Interrupt Priority Level
Specifies the priority level of interrupts generated by the GPT.
IVBA — Interrupt Vector Base Address
Most significant nibble of interrupt vector number generated by the GPT when an interrupt service re-
quest is acknowledged.
GPTMCR — GPT Module Configuration Register
$YFF900
15
14
13
12
11
10
9
8
7
6
5
4
3
0
STOP
FRZ1
FRZ0
STOPP
INCP
0
SUPV
0
IARB
RESET:
0
1
0
ICR — GPT Interrupt Configuration Register
$YFF904
15
12
11
10
8
7
4
3
2
1
0
IPA
0
IPL
IVBA
0
RESET:
0
相關(guān)PDF資料
PDF描述
MC68331CPV20B1 32-BIT, 20 MHz, MICROCONTROLLER, PQFP144
MC68331CFC25B1 32-BIT, 25 MHz, MICROCONTROLLER, PQFP132
MC68331CPV16B1 32-BIT, 16 MHz, MICROCONTROLLER, PQFP144
MC68331CPV20 32-BIT, 20.97 MHz, MICROCONTROLLER, PQFP144
MC68331CFC25 32-BIT, MICROCONTROLLER, PQFP132
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