Rainbow Electronics AT89C5132 User Manual
Page 43
43
AT8xC5132
4173A–8051–08/02
Table 53. IPH1 Register
IPH1 (S:B3h) – Interrupt Priority High Register 1
Reset Value = 0000 0000b
7
6
5
4
3
2
1
0
-
IPHUSB
–
IPHKB
IPHADC
IPHSPI
IPHI2C
IPHMMC
Bit
Number
Bit
Mnemonic
Description
7
-
Reserved
The values read from this bit is always 0. Do not set this bit.
6
IPHUSB
USB Interrupt Priority Level MSB
Refer to Table 48 for priority level description.
5
-
Reserved
The values read from this bit is always 0. Do not set this bit.
4
IPHKB
Keyboard Interrupt Priority Level MSB
Refer to Table 48 for priority level description.
3
IPHADC
A-to-D Converter Interrupt Priority Level MSB
Refer to Table 48 for priority level description.
2
IPHSPI
SPI Interrupt Priority Level MSB
Refer to Table 48 for priority level description.
1
IPHI2C
Reserved
The values read from this bit is always 0. Do not set this bit.
0
IPHMMC
MMC Interrupt Priority Level MSB
Refer to Table 48 for priority level description.