Maxim Integrated High-Speed Microcontroller Users Guide: Network Microcontroller Supplement - Manual (Page 91)

High-Speed Microcontroller User’s
Guide: Network Microcontroller
Supplement
91
7 6 5 4 3 2 1 0
SFR F7 — — — — V1PF V3PF SPTA2 SPRA2
R-1 R-1 R-1 R-1 R-0 R-0 R-0 R-0
Status Register 1 (STATUS1)
R = Unrestricted read, -n = Value after reset
Extended Interrupt Priority (EIP)
R = Unrestricted read, W = Unrestricted write, -n = Value after reset
Bits 7–0
V1PF
Bit 3
V3PF
Bit 2
SPTA2
Bit 1
SPRA2
Bit 0
Reserved.
Vcc1 power-fail. When set, this bit indicates that the voltage level of Vcc1 has fallen below Vpfw1.
Hardware setting of this bit forces PFI bit (WDCON.4) to 1. V1PF is cleared when PFI bit is cleared.
Vcc3 power-fail. When set, this bit indicates that the voltage level of Vcc3 has fallen below Vpfw3.
Hardware setting of this bit forces PFI bit (WDCON.4) to 1. V3PF is cleared when PFI bit is cleared.
Serial port 2 transmit activity monitor. When set, this bit indicates that data is currently being trans-
mitted by serial port 2. It is cleared when TI_2 is set.
Serial port 2 receive activity monitor. When set, this bit indicates that data is currently being received
by serial port 2. It is cleared when RI_2 bit is set.
EPMIP
Bit 7
C0IP
Bit 6
EAIP
Bit 5
PWDI
Bit 4
PWPI
Bit 3
PS2
Bit 2
PT3
Bit 1
PX2-5
Bit 0
Ethernet power mode interrupt priority.
EPMIP = 1 selects the Ethernet power mode interrupt source as a high priority.
EPMIP = 0 selects the Ethernet power mode interrupt source as a low priority.
CAN 0 interrupt LSB priority control. This bit does not exist in the DS80C411.
C0IP = 1 selects the CAN 0 status register source as a high priority.
C0IP = 0 selects the CAN 0 status register source as a low priority.
Ethernet activity interrupt priority.
EAIP = 1 selects the Ethernet activity interrupt as a high priority.
EAIP = 0 selects the Ethernet activity interrupt as a low priority.
Watchdog interrupt priority. Watchdog interrupt is a high priority when this bit is set to 1, and is a low
priority when this bit is cleared to 0.
Write-protected interrupt priority. Write-protected interrupt is a high priority when this bit is set to 1
and is a low priority when this bit is cleared to 0. This bit does not exist in the DS80C410/411.
Serial port 2 interrupt priority. Setting this bit to 1 selects serial port 0 interrupt source as a high pri-
ority, a 0 selects it as a low priority.
Timer 3 interrupt priority. Setting this bit to 1 selects timer 3 interrupt source as a high priority; a 0
selects it as a low priority.
External interrupt 2–5 priority. External interrupts 2–5 and 1-Wire bus master interrupt (if EOWMI = 1)
are high priority when this bit is set to 1 and are low priority when this bit is cleared to 0.
7 6 5 4 3 2 1 0
SFR F8h EPMIP C0IP EAIP PWDI PWPI PS2 PT3 PX2-5
RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0 RW-0
Maxim Integrated