Cirrus Logic CS4955 - Manual (Page 52)

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