mc68331cpv20b1 Freescale Semiconductor, Inc, mc68331cpv20b1 Datasheet - Page 213

• Manufacturer Part Number: mc68331cpv20b1
• Description: Mc68331 32 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

FRZ[1:0] — FREEZE Response
STOPP — Stop Prescaler
INCP — Increment Prescaler
SUPV — Supervisor/Unrestricted Data Space
IARB[3:0] — Interrupt Arbitration
D.2.2 GPTMTR — GPT Module Test Register (Reserved)
D.2.3 ICR — GPT Interrupt Configuration Register
IPA — Interrupt Priority Adjust
IPL — Interrupt Priority Level
IVBA — Interrupt Vector Base Address
MC68331
USER’S MANUAL
15
0
FRZ1 is not used; FRZ0 encoding determines response to the IMB FREEZE signal.
Each module that generates interrupts must have an IARB value. IARB values are
used to arbitrate between interrupt requests of the same priority.
This address is currently unused and returns zeros when read. It is reserved for GPT
factory test.
ICR fields determine internal and external interrupt priority, and provide the upper nib-
ble of the interrupt vector number supplied to the CPU when an interrupt is acknowl-
edged.
Specifies which of the 11 internal GPT interrupt sources is assigned highest priority.
Specifies the priority level of GPT interrupt requests.
Contains the most significant nibble of interrupt vector numbers supplied by the GPT.
RESET:
0 = Ignore IMB FREEZE signal
1 = Freeze the current state of the GPT
0 =Normal operation
1 =Stop prescaler and pulse accumulator from incrementing. Ignore changes to in-
0 =Has no meaning
1 =If STOPP is asserted, increment prescaler once and clock input synchronizers
0 =Registers with access controlled by the SUPV bit are accessible from either the
1 =Registers with access controlled by the SUPV bit are restricted to supervisor
0
put pins.
once.
user or supervisor privilege level.
access only.
IPA
0
12
0
Freescale Semiconductor, Inc.
11
For More Information On This Product,
0
0
10
0
Go to: www.freescale.com
REGISTER SUMMARY
IPL
0
8
0
7
0
0
IVBA
0
4
0
3
0
0
2
0
0
$YFF902
$YFF904
1
0
0
0
0
0
D-5
D