
Philips Semiconductors
PNX15xx Series
Volume 1 of 1
Chapter 18: SPDIF Input
PNX15XX_SER_3
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 3 — 17 March 2006
18-11
3.2.7
SPDI_UBITSx and User Bits
The complete set of user data channel bits are available in the SPDI_UBITSx
registers. The SPDI_UBITSx registers are updated on a block basis. Upon the
occurrence of each new B preamble in the source stream, the SPDI_UBITSx
12
Category code
12
User bit mgmt
13
Category code
13
User bit mgmt
14
Category code
14
User bit mgmt
15
Category code
15
User bit mgmt
16
Source Number
16
Use of aux bits
17
Source Number
17
Use of aux bits
18
Source Number
18
Use of aux bits
19
Source Number
19
Source word length - Source encode history
20
Channel number
20
Source word length - Source encode history
21
Channel number
21
Source word length - Source encode history
22
Channel number
22
Source word length - Source encode history
23
Channel number
23
Source word length - Source encode history
24
Sample rate
24
Multi-channel function
25
Sample rate
25
Multi-channel function
26
Sample rate
26
Multi-channel function
27
Sample rate
27
Multi-channel function
28
Clock accuracy
28
Multi-channel function
29
Clock accuracy
29
Multi-channel function
30
reserved
30
Multi-channel function
31
reserved
31
Multi-channel function
Table 4: SPDI_CBITS2 Channel Status Meaning
SPDI_CBITS2[n]
IEC Consumer
Channel Status
Bit No.
IEC Consumer
Meaning
AES/EBU
Professional Channel
Status Bit No.
AES/EBU Professional
Meaning
0
32
Word length
32
Digital audio reference signal
1
33
Word length
33
Digital audio reference signal
2
34
Word length
34
reserved
3
35
Word length
35
reserved
4:31
36:63
Table 3: SPDI_CBITS1 Channel Status Meaning …Continued
SPDI_CBITS1[n]
IEC Consumer
Channel
Status Bit No.
IEC Consumer
Meaning
AES/EBU
Professional
Channel Status
Bit No.
AES/EBU Professional Meaning