CS4207-CNZR Cirrus Logic Inc, CS4207-CNZR Datasheet - Page 75

• Manufacturer Part Number: CS4207-CNZR
• Description: Audio CODECs IC Lo Pwr,4/6 HD Aud Codec w/HP Amp
• Manufacturer: Cirrus Logic Inc

Specifications of CS4207-CNZR

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS880F1
6.7.8
Digital Converter Control
Get Parameter Command Format:
** Note: Address F0Eh is not supported.
Set Parameter Command Format:
Response Format:
The S/PDIF IEC Control (SIC) bits are supported in one of two ways. In the first case referred to as “Codec
Formatted SPDIF,” if a PCM bit stream of less than 32 bits is specified in the Converter Format control,
then the S/PDIF Control bits, including the “V,” “PRE,” “/AUDIO,” and other such bits are embedded in the
stream by the codec using the values (SIC bits) from the Digital Converter Control.
In the second case referred to as “Software Formatted (or Raw) SPDIF,” if a 32-bit stream is specified in
the Converter Format control, the S/PDIF IEC Control (SIC) bits are assumed to be embedded in the
stream by software, and the raw 32-bit stream is transferred on the link with no modification by the codec.
However, the codec must properly interpret the Sync Preamble bits of the stream and then send the ap-
propriately coded preamble. The IEC60958 specification, Section 4.3, “Preambles,” defines the pream-
bles and the coding to be used. Software will specify the “B,” “M,” or “W” (also known as “X,” “Y,” or “Z”)
preambles by encoding the last four bits of the preamble into the Sync Preamble section (bits 0-3) of the
frame. The codec must examine the bits specified and encode the proper preamble based on the previous
state. The previous state is to be maintained by the codec hardware.
Bits [31:28]
Bits [31:28]
CAd = X
CAd = X
31:16
14:8
Bits
15
7
6
5
4
3
S/P Tx 1 Node ID=08h
S/P Tx 2 Node ID=14h
S/P Tx 1 Node ID=08h
S/P Tx 2 Node ID=14h
Bits [27:20]
Bits [27:20]
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read Only
Read Only
Type
Verb ID = F0D/**
Verb ID =70D
Verb ID =70E
Bits [19:8]
Bits [19:8]
0000000b
Default
0000h
0b
0b
0b
0b
0b
0b
Reserved
Reserved
CC[6:0] (Category Code): Programmed accord-
ing to IEC standards, or as appropriate.
L (Generation Level): Programmed according to
IEC standards, or as appropriate.
PRO (Professional): 1 indicates Professional use
of channel status; 0 indicates Consumer.
/AUDIO (Non-Audio): 1 indicates data is non-
PCM format; 0 indicates data is PCM.
COPY (Copyright): 1 indicates copyright is
asserted; 0 indicates copyright is not asserted.
PRE (Pre-emphasis): 1 indicates filter pre-
emphasis is 50/15 µs; 0 pre-emphasis is none.
Parameter ID = Bits[15:8]
Parameter ID = Bits[7:0]
Parameter ID = 00h
Description
Bits [7:0]
Bits [7:0]
CS4207
75