Samsung S5PC100 User Manual page 1557

S5PC100 USER'S MANUAL (REV1.0)
3.135 SPDIFIN_CONFIG_1, R/W, ADDRESS = 0XF030_ 5010
SPDIFIN_CONFIG_1
noise_filter_samples
data_type
PcPd_value_mode
word_length_
value_mode
Bit
Noise filtering is done for over-sampled SPDIF input signal.
This operation is performed as follows.
If 'noise_filter_samples' is 0, 3 consecutive over-sampled
signal are regarded as a high or low if those 3 samples are
all high or low respectively. If 1 or 2 samples are low or high
respectively for 3 over-sample duration, that noise filtered
signal keeps previous value.
If 'noise_filter_samples' is 1, 2 consecutive over-sampled
6
signal are regarded as a high or low if those 2 samples are
all high or low respectively.
This setting are used for reduced over-sampling ratio;
recommended over-sampling ratio is 10 (Refer to clk_divisor
field in SPDIFIN_CONFIG_2)
0 = Filtering with 3 consecutive samples
1 = Filtering with 2 consecutive samples
This setting is used for data transfer via HDMI; see
SPDIFIN_DATA_BUF_x.
5
0 = Linear PCM type data
1 = Nonlinear PCM type data (Stream type)
If 0 for automatic setting, Pc and Pd values are chosen by
value of Pc, Pd from decoded stream header reported as in
SPDIFIN_Px_INFO.
If you set this register, the receiver uses
SPDIFIN_USER_VALUE[31:16],
SPDIFIN_USER_VALUE[15:4] value as Pc and Pd
respectively instead of decoded data from stream header as
reported in SPDIFIN_Px_INFO.
(cf) Burst payload length, whether it is automatically set or
4
manually set, affects the data size to be written in memory
via HDMI by dumping the full sub-frame for the last bit for
burst payload length.
For example, if burst payload length is 257-bit, i.e. (16sub-
frame * 16-bit + 1-bit), then HDMI writes data in 17
consecutive sub-frames.
0 = Automatically set
1 = Manually set
If 0 for automatic setting, word length value is chosen by
value of channel status from decoded SPDIF format as
reported in SPDIFIN_CH_STATUS_1. word_length.
If you set this register, the receiver uses
SPDIFIN_USER_VALUE[3:0] value as word length instead
3
of decoded data from channel status as reported in
SPDIFIN_CH_STATUS_1.word_length.
0 = Automatically set
1 = Manually set
Description
HDMI
Reset Value
0
0
0
0
9.10-75