AD1892JR Analog Devices Inc, AD1892JR Datasheet - Page 9

• Manufacturer Part Number: AD1892JR
• Description: IC SAMPLE CONV W/RX 20BIT 28SOIC
• Manufacturer: Analog Devices Inc
• Type: Sample Rate Converterr

Specifications of AD1892JR

• Rohs Status: RoHS non-compliant
• Applications: Players, Recorders
• Voltage - Supply, Digital: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Voltage - Supply, Analog: -

REV. 0
As noted above, the Channel Status bit from each subframe
accumulates over a 192 subframe period. The standards allow for
the Channel Status bit in each subframe to be independent, but
ordinarily the Channel Status bit in the two subframes of each
frame are the same. The Channel Status bits are defined
BYTE 0
Figure 6. Consumer Channel Status Block Structure
22
23
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
8
9
PRO = 0
BIT 0
SOURCE NUMBER
AUDIO
1
F
S
A0 B0 A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7 A8 B8
0
PREAMBLE
COPY
2
A0
CATEGORY CODE
FRAME
RESERVED
3
3
EMPHASIS
B0
4
CLOCK ACCURACY
AUX DATA
4
CHANNEL NUMBER
Figure 5. Block, Frame and Subframe Organization
A1
7
5
8
LSB
CHANNEL STATUS BLOCK (384 AUDIO SAMPLES)
RESERVED
6
MODE
B1
7
L
192 LEFT, 192 RIGHT
(EXPANDED)
(EXPANDED)
15
A2
23
31
39
191
BLOCK
7
BIT
SUBFRAME
AUDIO DATA
–9–
B2
differently for the consumer audio standards and the profes-
sional audio standards. The 192 Channel Status bits are
organized into 24 bytes and have the interpretations shown in
Figures 6 through 16.
BYTE 0
Figure 7. Professional Channel Status Block Structure
22
23
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
8
9
PRO = 1
CHANNEL STATUS DATA
BIT 0
REFERENCE
A = LEFT CHANNEL
B = RIGHT CHANNEL
AUX USE
CHANNEL MODE
EVEN PARITY BIT
AUDIO
RESERVED
ALPHANUMERIC CHANNEL DESTINATION DATA
1
CYCLIC REDUNDANCY CHECK CHARACTER
ALPHANUMERIC CHANNEL ORIGIN DATA
USER DATA
LOCAL SAMPLE ADDRESS CODE
VALIDITY
A188 B188 A189 B189 A190 B190 A191 B191
2
TIME OF DAY CODE
EMPHASIS
(32-BIT BINARY)
(32-BIT BINARY)
MSB
RESERVED
RESERVED
3
WORD LENGTH
27 28 29 30 31
V U C P
RESERVED
4
USER BIT MANAGEMENT
RELIABILITY FLAGS
LOCK
5
AD1892
RESERVED
6
F
S
7
119
151
15
23
31
39
47
55
87
183
191
BLOCK
7
BIT