
Table 4-2. Register Map - Read Functions
ID Reg (ID1,0 = 0/0)ID0ID1ID2ID3ID4ID5ID6ID7
CS1/0 = 1/1
Status Register 2
ITECASCDTENDTIEOCINTEGTENHCEN
CS1/0=
0/0,0/1,1/0
Function depends on value of CS0/1 bits in Base +3:
Base + 7
8254 C/T 2 Status Register
Base + 6
8254 C/T 1 Status Register
Base + 5
8254 C/T 0 Status Register
Base + 4
Control Status
R0
R1R2R3
MA0MA1MA2EACSBase + 3
Status Register 1
MA0MA1MA2IRQIP1IP2IP3EOCBase + 2
High byte read
AD4AD5AD6AD7AD8AD9AD10AD11Base + 1
Low byte read
FFEMFFOVFF2FF3AD0AD1AD2AD3Base + 0
D0D1D2D3D4D5D6D7
Register
FunctionData BitsREAD
Functions
10
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