ak5385a AKM Semiconductor, Inc., ak5385a Datasheet - Page 14

• Manufacturer Part Number: ak5385a
• Description: 24bit 192khz Adc
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
n ƒVƒXƒeƒ€ƒNƒ•ƒbƒN
AK5385A‚É•K—v‚Æ‚³‚ê‚éƒNƒ•ƒbƒN‚Í M CLK, BICK, LRCK‚Å‚·•BMCLK‚Æ LRCK‚Í“¯Šú‚·‚é•K—v‚Í ‚ ‚è‚Ü‚·‚ª•A
ˆÊ‘Š‚𕇂킹‚é•K—v‚Í‚ ‚è‚Ü‚¹‚ñ•B
ƒ•ƒbƒN‚ÌŽü”g•”‚ðŽ¦‚µ‚Ü‚·•B AK5385A‚̃}ƒXƒ^ƒNƒ•ƒbƒNŽü”g•”‚Í CKS1-0 pin (Table 2)‚ŕݒ肵•AƒTƒ“ƒvƒŠƒ“
ƒOŽü”g•”‚Í D FS1-0 pin (Table 3)‚ŕݒ肵‚Ü‚·•B
ƒXƒŒ•[ƒuƒ‚•[ƒhŽž‚É‚Í•A
”g•”•Ï•X“™‚Å“à•”ƒ^ƒCƒ~ƒ“ƒO‚ª‚¸‚ꂽ•ê•‡‚É‚ÍŽ©“®“I‚ɃŠƒZƒbƒg‚ª‚©‚©‚è•AˆÊ‘Š•‡‚킹‚ª•s‚í‚ê‚Ü‚·•B
ƒXƒŒ•[ƒuƒ‚•[ƒh‚Å‚Ì“®•ìŽž
‚±‚ê‚ç‚̃Nƒ•ƒbƒN‚ª‹Ÿ‹‹‚³‚ê‚È‚¢•ê•‡•A“à•”‚Ƀ_ƒCƒiƒ~ƒbƒN‚ȃ•ƒWƒbƒN‚ðŽg—p‚µ‚Ä‚¢‚邽‚ß•A‰ß“d—¬‚ª—¬‚ê
“®•ì‚ªˆÙ•í‚É‚È‚é‰Â”\•«‚ª‚ ‚è‚Ü‚·•BƒNƒ•ƒbƒN‚ðŽ~‚ß‚é•ê•‡‚̓pƒ••[ƒ_ƒEƒ“•ó‘Ô ( PDN pin = “L”)‚É‚µ‚ĉº‚³
‚¢•Bƒ}ƒXƒ^ƒ‚•[ƒh‚ł̓pƒ••[ƒ_ƒEƒ“ŽžˆÈŠO‚Í•AŠO•”ƒNƒ•ƒbƒN
[ƒTƒ“ƒvƒŠƒ“ƒOŽü”g•”•Ï•XŽž‚Ì’•ˆÓ“_
MS0265-J-01
ƒXƒŒ•[ƒuƒ‚•[ƒh /ƒ}ƒXƒ^ƒ‚•[ƒh‹¤‚É•A MCLKŽü”g•”‚ð•Ï•X‚·‚é•ê•‡‚ÍPDN pin = “L”‚ŃŠƒZƒbƒg‚µ‚ĉº‚³‚¢•B
ƒXƒŒ•[ƒuƒ‚•[ƒh /ƒ}ƒXƒ^ƒ‚•[ƒh‹¤‚É•A MCLKŽü”g•”‚ðŒÅ’è‚É‚µ‚Ä CKS1-0, DFS1-0 pin‚ŃTƒ“ƒvƒŠƒ“ƒOŽü”g•”‚ð
•Ï•X‚·‚é•ê•‡‚Í PDN pin = “L”‚ŃŠƒZƒbƒg‚·‚é•K—v‚Í‚ ‚è‚Ü‚¹‚ñ•B
[—á ] 12.288MHz(@fs=48kHz)‚©‚ç 24.576MHz(@fs=96kHz)‚ É • Ï • X ‚ · ‚ é • ê • ‡ • B
[—á ] MCLKŽü”g•”‚ð 24.576MHz‚Ì ‚Ü‚Ü•A fs‚ð 48kHz‚©‚ç 96kHz‚É•Ø‚è‘Ö‚¦‚é•ê•‡•B
44.1kHz
192kHz
32kHz
48kHz
96kHz
fs
AK5385A‚Í LRCK‚É‚æ‚éˆÊ‘ŠŒŸ•o‰ñ˜H‚ð“à‘ ‚µ‚Ä‚¢‚邽‚ß•A“®•ì’†‚ÉŠeƒNƒ•ƒbƒN‚ÌŽü
(PDN pin = “H”)‚Í•AŠeŠO•”ƒNƒ•ƒbƒN (MCLK, BICK, LRCK)‚ðŽ~‚ß‚Ä‚Í‚¢‚¯‚Ü‚¹‚ñ•B
DFS1 pin
24.576MHz
CKS1 pin
H
H
L
L
128fs
N/A
N/A
N/A
N/A
H
H
L
L
Table 1‚É•W•€‚̃I•[ƒfƒBƒIƒŒ•[ƒg‚ɑ΂µ‚ÄAK5385A‚É•K—v‚Æ‚³‚ê‚éŠeƒN
]
Table 1. System Clock Example
Table 2. MCLK Frequency
Table 3. Sampling Speed
DFS0 pin
CKS0 pin
11.2896MHz
12.288MHz
24.576MHz
8.192MHz
H
H
L
L
256fs
H
H
“ ® • ì • à – ¾
L
L
N/A
- 14 -
MCLK
108kHz
54kHz
8kHz
(MCLK)‚ð‹Ÿ‹‹‚µ‚ĉº‚³‚¢•B
MCLK Frequency
LRCK Frequency
16.9344MHz
12.288MHz
18.432MHz
384fs
N/A
N/A
256fs
128fs
512fs
384fs
N/A
fs
fs
fs
54kHz
108kHz
216kHz
22.5792MHz
16.384MHz
24.576MHz
512fs
N/A
N/A
[AK5385A]
2003/11