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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
76543 2 1 0
Bit Name
RESERVED INT_21_EN INT_284_EN INT_V_EN
Default
00000 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
0INT_V_EN
interrupt enable for new video field
Bit Number
76543 2 1 0
Bit Name
RESERVED CLR_INT_21 CLR_INT_284 CLR_INT_V
Default
00000 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
543 2:0
Bit Name
INT_21 INT_284 INT_V FLD
Default
000 0
Bit Mnemonic Function
5INT_21
Interrupt flag for line 21 (closed caption) complete
4 INT_284
Interrupt flag for line 284 (closed caption) complete
3INT_V
Interrupt flag for video field change
2:0 FLD_ST
Field Status bits(001 = field 1,000 = field 8)
Bit Number 76543210
Bit Name
DEVICE_ID
Default
00000100
Bit Mnemonic Function
7:0 DEVICE_ID
Device identification: CS4954: 0000 0100, CS4955: 0000 0101