ak4140 AKM Semiconductor, Inc., ak4140 Datasheet - Page 29

• Manufacturer Part Number: ak4140
• Description: Digital Btsc Decoder
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The INT1/0 pin goes “H” when one of following three statuses changes without masking. Each change of status can be
masked by MPLT bit, MSP bit and MNS bit. When masked, the interrupt event does not affect the operation of the INT1/0
pin (the masks do not affect the status registers). When the PDN pin= “L” or RSTN= “0”, the INT pin goes to “L”.
Once INT1/0 pin goes to “H”, it remains “H” for the hold time controlled by the INT11-10, INT01-00 bits.
MS0547-E-01
Event
INT1/0 pin
1.
2.
3.
Status Change Handling
(PILOT, SAP or NOISE bit)
PILOT bit : PILOT detection
SAP bit
NOISE bit
: SAP detection
: Noise detection
Goes “1” when the Pilot signal is detected.
Goes “1” when the SAP signal is detected.
Goes “1” when the noise is detected.
INT01 bit
INT11 bit
0
0
1
1
0
0
1
1
Table 20. INT0 pin Hold Time Control
Table 21. INT1 pin Hold Time Control
INT00 bit
INT10 bit
0
1
0
1
0
1
0
1
Figure 14. INT pin Timing
Holds “H” until the status register is read.
Holds “H” until the status register is read.
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INT0 pin Hold time
INT1 pin Hold time
1024 LRCK cycle
4096 LRCK cycle
1024 LRCK cycle
4096 LRCK cycle
Internal Counter Initialized
1LRCK cycle
1LRCK cycle
Hold Time
Hold Time
[AK4140]
2007/03