Interrupt register 0, Interrupt register 1, Status register 0 – Cirrus Logic CS4955 User Manual
Page 52: Status register 1

CS4954 CS4955
52
DS278F6
Interrupt Register 0
Address
0
×
32
INT_EN
Read/Write
Default Value = 00h
Interrupt Register 1
Address
0
×
33
INT_CLR
Read/Write
Default Value = 00h
Status Register 0
Address
0
×
34
STATUS_0
Read Only
Default Value = 00h
Status Register 1
Address
0
×
5A
STATUS_1
Read only
Default Value = 04h
Bit Number
7
6
5
4
3
2
1
0
Bit Name
RESERVED
INT_21_EN
INT_284_EN
INT_V_EN
Default
0
0
0
0
0
0
0
0
Bit
Mnemonic
Function
7:3
-
reserved
2
INT_21_EN
interrupt enable for closed caption line 21
1
INT_284_EN
interrupt enable for closed caption line 284
0
INT_V_EN
interrupt enable for new video field
Bit Number
7
6
5
4
3
2
1
0
Bit Name
RESERVED
CLR_INT_21
CLR_INT_284
CLR_INT_V
Default
0
0
0
0
0
0
0
0
Bit
Mnemonic
Function
7:3
-
reserved
2
CLR_INT_21
clear interrupt for closed caption line 21 (INT 21)
1
CLR_INT_284
clear interrupt for closed caption line 284 (INT_284)
0
CLR_INT_V
clear interrupt for new video field (INT_V)
Bit Number
5
4
3
2:0
Bit Name
INT_21
INT_284
INT_V
FLD
Default
0
0
0
0
Bit
Mnemonic
Function
5
INT_21
Interrupt flag for line 21 (closed caption) complete
4
INT_284
Interrupt flag for line 284 (closed caption) complete
3
INT_V
Interrupt flag for video field change
2:0
FLD_ST
Field Status bits(001 = field 1,000 = field 8)
Bit Number
7
6
5
4
3
2
1
0
Bit Name
DEVICE_ID
Default
0
0
0
0
0
1
0
0
Bit
Mnemonic
Function
7:0
DEVICE_ID
Device identification: CS4954: 0000 0100, CS4955: 0000 0101