參數(shù)資料
型號： SAA7384
廠商： NXP Semiconductors N.V.
英文描述： Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems
中文描述： 地面數(shù)字音頻解碼器為傳統(tǒng)載波鎖相環(huán)中頻系統(tǒng)
文件頁數(shù)： 16/40頁
文件大?。?/td> 182K
代理商： SAA7384
1996 Oct 24
16
Philips Semiconductors
Preliminary specification
Terrestrial digital sound decoder for
conventional intercarrier PLL-IF systems
SAA7284
Table 11
Explanation of Table 10
I
2
C slave transmitter register map
The bus master can perform single-byte, two-byte, three-byte, four-byte or five-byte read in the order shown in Table 12.
Table 12
Slave transmitter data byte
ITEM
DESCRIPTION
START
Slave_addr
X
R
ACK
Data_byte
ACK
STOP
I
2
C-bus start condition
101101XR
logic 0 when ADSEL = 0; logic 1 when ADSEL = 1
logic 1, I
2
C-bus read from slave transmitter
I
2
C-bus acknowledge condition generated by slave receiver
data byte transmitted from slave receiver
master device negative acknowledge to indicate last byte
I
2
C-bus stop condition
BYTE
D7
D6
D5
D4
D3
D2
D1
D0
STATUS BYTE 1
ERROR BYTE
AD BYTE 0
AD BYTE 1
STATUS BYTE 2
PONRES
ERR7
AD7
OVW
C1
S/M
ERR6
AD6
SAD
C2
D/S
ERR5
AD5
0
C3
VDSP
ERR4
AD4
CI1
BG/I
RSSF
ERR3
AD3
CI2
0
OS
ERR2
AD2
AD10
0
AM
ERR1
AD1
AD9
0
CFC
ERR0
AD0
AD8
0
PONRES
When set HIGH this bit indicates that a power-on reset has
occurred. It is cleared after the status byte has been read.
S/M
This bit gives the stereo or mono broadcast indication.
Set HIGH indicates stereo transmission.
D/S
When HIGH this bit indicates a dual mono broadcast.
VDSP
When this bit is HIGH, it indicates that the digital data
transmission is a sound source. When LOW the
transmission is either data or undefined format.
RSSF
This bit reflects the state of the C4 bit in the NICAM
transmission. When set LOW, the FM sound content does
not match the digital transmission, and switching to FM by
automatic mute or setting MUTE LOW is prevented
(if C4OV = HIGH).
OS
When HIGH this bit indicates that the device has both
frame and C0 (16 frame) synchronization.
AM
When HIGH this bit indicates that the automatic mute
function has switched from NICAM to FM. When LOW the
automatic mute function has not activated a switch.
CFC
When LOW this bit indicates a configuration change at the
C0 (16 frame) boundary. It is reset after reading the status
byte.
ERR7
TO
ERR0
These bits indicate the number of errors occurring in the
previous 128 ms period.
AD7
TO
AD0
These bits contain the eight least significant additional
data bits.
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