z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 84

• Manufacturer Part Number: z8f1621
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Table 28. IRQ0 Enable High Bit Register (IRQ0ENH)
PS019921-0308
BITS
FIELD
RESET
R/W
ADDR
IRQ0 Enable High and Low Bit Registers
T2ENH
7
where x indicates the specific GPIO Port C pin number (0 through 3).
The IRQ0 Enable High and Low Bit registers (see
a priority encoded enabling for interrupts in the Interrupt Request 0 register. Priority is
generated by setting bits in each register.
Table 27. IRQ0 Enable and Priority Encoding
T2ENH—Timer 2 Interrupt Request Enable High Bit
T1ENH—Timer 1 Interrupt Request Enable High Bit
T0ENH—Timer 0 Interrupt Request Enable High Bit
U0RENH—UART 0 Receive Interrupt Request Enable High Bit
U0TENH—UART 0 Transmit Interrupt Request Enable High Bit
I2CENH—I
SPIENH—SPI Interrupt Request Enable High Bit
ADCENH—ADC Interrupt Request Enable High Bit
Note: where x indicates the register bits from 0 through 7.
IRQ0ENH[x] IRQ0ENL[x]
0
0
1
1
T1ENH
6
2
C Interrupt Request Enable High Bit
T0ENH
0
1
0
1
5
U0RENH
Disabled
Priority
Level 1
Level 2
Level 3
4
FC1H
R/W
Table 27
0
U0TENH
3
Description
Disabled
Nominal
Table 28
describes the priority control for IRQ0.
High
Low
Z8 Encore! XP
I2CENH
and
2
Table 29
Product Specification
SPIENH
1
®
on page 71) form
Interrupt Controller
F64XX Series
ADCENH
0
70