Texas Instruments PCM1681, Руководство пользователя

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Description
SBAU137 – April 2008
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EVM Configuration Controls
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1.4.2 Switch Controls
The following switches, summarized in Table 1-1 to Table 1-3 , are provided onboard for EVM control.
Table 1-1. SW006: Data Format Selection in Hardware Control Mode for PCM1681
FMT1 (as S4/ML) FMT0 (as S1/RST) Data Format Selection
On (L) On (L) 24-bit, Right-Justified Format
On (L) Off (H) 16-bit to 24-bit, I
2
S Format
Off (H) On (L) 16-bit to 24-bit, Left-Justified Format
Off (H) Off (H) 24-bit, I
2
S Mode TDM Format
Table 1-2. SW006: De-Emphasis and Mute Selection in Hardware Control Mode for PCM1681
MUTE (as S2/MDI) DEMP (as S3/MC) De-Emphasis and Mute Selection
On (L) On (L) Mute Off, De-Emphasis Off
On (L) Off (H) Mute Off, De-Emphasis 44.1 kHz On
Off (H) On (L) Mute On, De-Emphasis Off
Off (H) Off (H) Mute On, De-Emphasis 44.1 kHz On
Table 1-3. SW001/002/003: Format Selection for CS8414 (Digital Audio I/F Receiver)
SW003 (M2) SW002 (M1) SW001 (M0) Data Format Selection
L L L 16-bit to 24-bit, Left-Justified
(1)
L H L 16-bit to 24-bit, l
2
S
H L H 16-bit, Right-Justified
(1)
BCK of JP001 selection. When Left-Justified data format is used, move the jumper from BCK to BCK [L/J] for the JP001 setting.
SW004: Manual reset for CS8414
SW005: Digital Audio Interface Selection
• Internal—CS8414
• External—(CN004)