WM8850
Pre-Production
S/PDIF IN CONTROL VERB (VENDOR-SPECIFIC)
Verb ID
FA1h
Payload [7:0]
00h
Response[31:0]
Get
Set
Bits [31:0] in the table below
00000000h
7A1h
Bits [7:0] in the table below
Bit
Bitfield Name
Rsvd
RW
R
Default
0000000
0
Description
[31:4]
[3]
Reserved
Unlock Ctrl
RW
Configures how the SPDIF Rx audio path handles an unlock/relock
condition:
0 = push method, where recovered sample rate is updated immediately
and a re-write of the stream ID is not required to re-start data transmission
1 = controlled method, where the recovered sample rate is updated after
the stream ID has been set to 0. R e-writing the stream ID to a non-zero
value re-starts data transmission.
[2]
PD Config
RW
0
Configures the Presence Detect Capable parameter:
0 = parameter set to 0
1 = parameter set to 1
When set to 0, Presence Detect reporting via the Pin Sense Verb is
disabled, as is Unsolicited Response generation from the SF_PD flag from
the S/PDIF In node.
[1]
[0]
CMOS Thres
Pin Mode Sel
RW
RW
0
0
Selects the logic threshold levels when in CMOS Mode:
0 = 30% / 70% thresholds
1 = 20% / 40% thresholds
The SPDIF_IN pin supports both CMOS-compatible inputs and Comparator
Inputs compatible with 500mVpp AC coupled consumer S/PDIF signals as
defined in IEC60958-3. Pin Mode Sel selects between these options:
0 = CMOS Mode
1 = Comparator Mode
PP, April 2011, Rev 3.2
178
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
