Rainbow Electronics AT89C5131 - Manual (Page 96)

96
AT89C5131
4136A–USB–03/03
Table 69. IPL1 Register
IPL1 - Interrupt Priority Register (B2h)
Reset Value = XXXX X000b
Bit addressable
7 6 5 4 3 2 1 0
- PUSBL - - - PSPIL PKBDL
Bit
Number
Bit
Mnemonic Description
7 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6 PUSBL
USB Interrupt Priority bit
The value read from this bit is indeterminate. Do not set this bit.
5 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
3 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
2 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
1 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
0 PKBL
Keyboard Interrupt Priority bit
Refer to KBDH for priority level.