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| 型號： | LC89058W-E |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 MM, SQFP-48 |
| 文件頁數(shù)： | 32/46頁 |
| 文件大?。?/td> | 284K |
| 代理商： | LC89058W-E |
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LC89058W-E
No.A1056-38/64
12. Microcontroller Interface (
_____
INT , CL, CE, DI, DO)
12.1 Description of Microcontroller Interface
12.1.1 Interrupt output (
____
INT)
Interrupts is output when a change has occurred in the PLL lock status or output data information.
Interrupt output consists of the register for selecting the interrupt source, the
______
INT pin that outputs that state transition,
and the registers that store the interrupt source data.
Normally
______
INT is held “H” and output “L” upon occurrence of an interrupt. Following “L” output, it is cleared and
returns to “H” immediately when the interrupt source output register is readout.
The interrupt sources can be selected among the following items. Multiple sources can be selected at the same time
with the contents of CCB address 0xE8 and command address 8.
______
INT outputs OR calculation result of the selected
interrupt sources.
______
INT output = (selected source 1) + (selected source 2) + ... + (selected source n)
Table 12.1 Interrupt Source Setting Contents
No.
Command Name
Description
1
ERROR
Output when RERR pin status has changed
2
INDET
Output when input data pin status has changed (subject to oscillation amplifier operation condition)
3
FSCHG
Output when input fs calculation result has changed. (subject to oscillation amplifier condition)
4
CSRNW
Output when channel status data of first 48 bits have updated
5
UNPCM
Output when
______
AUDIO pin status has changed
6
PCRNW
Output when burst preamble Pc has been updated
7
GPIO
Output when the state of input data changes when the general-purpose I/O parallel input is set.
8
EMPF
Output when emphasis information has changed
The contents of set interrupt source are saved in output registers DO8 to DO15 of CCB address 0xEA, when the
source occurs. However, for the read registers for source items 1 and 5, the each status of the RERR and
____________
AUDIO pins
are output at the time of reading. Other data except for source items 1 and 5 are saved in the registers upon occurrence
of an interrupt source.
Concerning source items 2 and 3, the oscillation amplifier clock is used. Therefore, if the status is monitored even
while the PLL is locked, the oscillation amplifier must be set to the continuous operation mode.
Clearing
______
INT at the same time of readout of an output register is carried out immediately after the output register
0xEA is set. However,
______
INT is not cleared other than the 0xEA setting.
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