Rainbow Electronics AT89C5122 - Manual (Page 166)

166
AT8xC5122/23
4202E–SCR–06/06
Reset Value = X00X 00X0b (Bit addressable)
Table 103. Interrupt Priority Low Register 1 - IPL1 (B2h) for AT8xC5122
7 6 5 4 3 2 1 0
- PUSBL - - PSCIL PSPIL - PKBDL
Bit
Number
Bit
Mnemonic Description
7 -
Reserved
The value read from this bit is indeterminate. Do not change this bit.
6 PUSBL
USB Interrupt Priority bit
Refer to PUSBH for priority level.
5 - 4 -
Reserved
The value read from this bit is indeterminate. Do not change these bits.
3 PSCIL
SCI Interrupt Priority bit
Refer to PSPIH for priority level.
2 PSPIL
SPI Interrupt Priority bit
Refer to PSPIH for priority level.
1 -
Reserved
The value read from this bit is indeterminate. Do not change this bit.
0 PKBL
Keyboard Interrupt Priority bit
Refer to PKBDH for priority level.