Rainbow Electronics T89C5121 - Manual (Page 56)

56
A/T8xC5121
4164G–SCR–07/06
Table 39. IPH1 Register
Reset Value = XXXX 0XXXb
7 6 5 4 3 2 1 0
- - - - PSCIH - - -
Bit
Number
Bit
Mnemonic Description
7 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6 -
Reserved
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 PSCIH
SCI Interrupt Priority level most significant bit
PSCIH PSCIL Priority level
0
0 Lowest
0 1
1 0
1 1 Highest priority
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 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.