參數(shù)資料
型號(hào): SAA2502H
廠商: NXP SEMICONDUCTORS
元件分類: 消費(fèi)家電
英文描述: ISO/MPEG Audio Source Decoder
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝: PLASTIC, SOT-307, QFP-44
文件頁數(shù): 40/64頁
文件大?。?/td> 318K
代理商: SAA2502H
1997 Nov 17
40
Philips Semiconductors
Preliminary specification
ISO/MPEG Audio Source Decoder
SAA2502
Table 45
Explanation of bits in Table 44
Note
1.
Default settings (settings value after a hard reset).
Table 46
Interrupt masking register: 1 byte (write-only, unrestricted type, local address = 1DH)
The individual bits of the interrupt masking register (Table 46) may mask the interrupt events at the same bit location in
the interrupt event register (Table 44):
logic 0 (default setting, setting value after a hard reset); interrupt event is masked.
logic 1; interrupt event is not masked.
Masked interrupt are still flagged in the interrupt event register, they just do NOT have an effect on the INTRPT interrupt
pin (thus polling of masked interrupts is possible).
BIT
DESCRIPTION
DST0U
STOP
CRCERR
INSNC
NOSNC
DST0 has been set (valid ancillary/PAD data, headers and error report)
rising edge of STOP input signal
MPEG CRC check failed
status bit INSYNC was set
status bit INSYNC was cleared
logic 0
(1)
; no interrupt for this event
logic 1; interrupt for this event
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
0
0
0
IMSK4
IMSK3
IMSK2
IMSK1
IMSK0
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