PNX1700EH,557 NXP Semiconductors, PNX1700EH,557 Datasheet - Page 577
PNX1700EH,557
Manufacturer Part Number
PNX1700EH,557
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1700EH557.pdf
(832 pages)
Specifications of PNX1700EH,557
Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant
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Philips Semiconductors
Volume 1 of 1
Table 6: SPDIF Input Registers
PNX17XX_SER_1
Preliminary data sheet
Bit
Offset 0x10 A000
31:9
11:8
7
6:5
4:3
Symbol
Unused
GL_FILTER
UCBITS_SEL
CHAN_MODE[1:0]
SAMP_MODE[1:0]
5.2 Register Table
SPDI_CTL
Acces
s
R/W
R/W
R/W
R/W
Value
-
0
0
0
0
Rev. 1 — 17 March 2006
Description
Input glitch filter control. These bits control the rejection of a glitch
on the SPDI interface.
User/Channel status bits select. Selects the set of subframes from
which the user and channel status bits are extracted and written to
the SPDI_UBITSx and SPDI_CBITSx registers. This bit is activated
only on a block boundary, meaning that the bit can be changed at
any time via software, but the update of the SPDI_UBITSx and
SPDI_CBITSx registers with the new information will wait until a
complete block has been received at the SPDIF Input.
00 = Capture stereo left/right sample pairs (Default).
01 = Capture mono primary (subframe 1) channel.
10 = Capture mono secondary (subframe 2) channel.
11 = Reserved
Note: The channel mode should only be changed while capture is
disabled (i.e. CAP_ENABLE = 0).
00 = 16-bit mode. Subframe bits [27:12] inclusive are selected and
stored. Hardware stores a single 16-bit word per subframe. If audio
samples are actually larger than 16 bits, the most significant 16 bits
of the audio sample will be selected and stored.
01= 32-bit mode. Subframe bits [27:4] inclusive are selected and
stored subject to SMASK. A 32-bit word is formed by bitwise
masking the sample (subject to the value of
SPDI_SMPMASK.SMASK) and padding ‘0’ bits to the least
significant end of the 24 bits. The resultant 32-bit words are of the
form: 0xnnnnmm00 where the n s are the 16 subframe bits [27:12]
and the m s are the eight masked subframe bits [11:4]. This
provides for any audio sample size from 17 to 24 bits. (See the
SPDI_SMPMASK register description for operation of the SMASK
feature). SMASK only applies for this sample mode.
10 = Raw capture mode. The entire subframe is captured and
stored. The bi-phase portion of the subframe (i.e., bits [31:4]) are
decoded into binary. Bits [3:0] are replaced with a code. The entire
32 bits are then stored as one unit.
11 = Reserved
Note: The sample mode should only be changed while capture is
disabled (i.e., CAP_ENABLE = ‘0’).
0000 = The Glitch Rejection Filter is disabled.
0001 .. 1111 = An incoming signal transition must remain stable
for (programmed value + 1) rising edges of OSC_CLK, otherwise
it is rejected as a glitch.
0 = subframe 1 is selected, user and channel status bits are
extracted/written to UBITSx and CBITSx registers.
1 = subframe 2 is selected. User and channel status bits are
extracted/written to UBITSx and CBITSx registers.
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX17xx Series
Chapter 18: SPDIF Input
18-17
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