Rainbow Electronics AT89C51SND1C - Manual (Page 42)

42
AT8xC51SND1C
4109E–8051–06/03
Table 53. IPH0 Register
IPH0 (S:B7h) – Interrupt Priority High Register 0
Reset Value = X000 0000b
7 6 5 4 3 2 1 0
- IPHAUD IPHMP3 IPHS IPHT1 IPHX1 IPHT0 IPHX0
Bit
Number
Bit
Mnemonic Description
7 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6 IPHAUD
Audio Interface Interrupt Priority Level MSB
Refer to Table 49 for priority level description.
5 IPHMP3
MP3 Decoder Interrupt Priority Level MSB
Refer to Table 49 for priority level description.
4 IPHS
Serial Port Interrupt Priority Level MSB
Refer to Table 49 for priority level description.
3 IPHT1
Timer 1 Interrupt Priority Level MSB
Refer to Table 49 for priority level description.
2 IPHX1
External Interrupt 1 Priority Level MSB
Refer to Table 49 for priority level description.
1 IPHT0
Timer 0 Interrupt Priority Level MSB
Refer to Table 49 for priority level description.
0 IPHX0
External Interrupt 0 Priority Level MSB
Refer to Table 49 for priority level description.