USB

USB ୵Ӽӄϟय़ගଯ
୵Ӽӄϟय़ගଯᐒ΢౯
ϟय़ගଯᐒ΢౯ᆶًؓӭ൞ᡏೱௗ‫ૈ܄‬
ᐒ΢౯ᆶًؓӭ൞ᡏೱௗ‫!ૈ܄‬
ᆶًؓӭ൞ᡏೱௗ‫ૈ܄‬
߻‫ق‬
ኧՏႝຎਔжٰᖏǴЪςӧШࣚӚӦ೴ᅌදϷǶӢᔈӄౚӚ୯࣬ᝩ຾ՉᜪК
ૻဦଶኞϷΓᜪట٦Ԗ‫׳‬ଯฝ፦Ъ‫ڀ‬ϕ୏фૈ‫ޑ‬ሡ‫؃‬ǴኧՏႝຎ़ฅԋࣁന዗ߐ
୘ᐒǴ೭ި዗ዊ‫ًؓډុۯ׳‬ѱ൑Ƕ౜ϞǴӚًؓεቷΨഌុीჄஒኧՏႝຎય
Εཥًว߄ًී‫ޑ‬уᒧଛഢǴ‫ុࡕځ‬ว৖Їଆѱ൑΢ଯࡋᜢ‫ݙ‬ǹ҂ٰӧً΢٦Ԗ
λࠠቃଣഗભຎ᝺ᆶ᠋᝺٦‫ޑڙ‬ऍფǴࡐ‫ז‬ஒૈჴ౜Ƕ!
ًҔኧՏႝຎ‫܌‬๱ख़‫ܭ‬ฝ፦ᛙ‫܄ۓ‬Ǵ‫ޑੋ౐܌ځ‬хࡴኧՏϯፓᡂ‫ޑ‬ၸำǵً
ηӧଯೲՉᎭΠԏૻࢂց‫ؼ‬ӳǴ‫ૈ܈‬ցլܺ਻ংቹៜ฻Ǵ೭٤ᜢᗖӢન೿Ԗᒘᐒ
΢౯(STB)඲ТϷϺጕ೛ी࣬ᜢ‫ޑೌמ‬ගܹǶ
USB ϟय़‫ۯ‬՜ᐒ΢౯ᔈҔ
ኧՏႝຎᐒ΢౯ϣ೽Ьाࢎᄬхࡴ߻ᆄௗԏૻဦϷࡕᆄှዸૻဦ‫ٿ‬ε୔༧
(კ΋)ǴԶ߻ᆄЬाх֖ፓᒋᏔ(Tuner)ǵှፓᏔ(Demodulator)‫ٿ‬೽ϩǴࡕᆄ߾
ࣁှዸᏔ(Decoder) ǹ၀း࿼‫ޑ‬Ҟ‫ࢂޑ‬ஒᜪКૻဦᙯࣁኧՏૻဦǴӆ຾΋‫؁‬ᙯࣁ
ᡉҢᏔ਱ԄǶ!
!
!
კ 1.!ኧՏႝຎᐒ΢౯୷ҁࢎᄬҢཀკ!
!
඲ТኳಔБय़ǴஒѸ‫ۓ‬රӛӭфૈว৖Ǵхࡴᡏᑈ‫ޑ‬ᕭ෧Ǵ٠᏾ӝ٬Ҕόӕ
ௗԏБԄ‫ޑ‬ှዸфૈǴӢԶёаӧ΋Ѡಖᆄ΢ֹԋӭᅿόӕߞဦ‫ޑ‬ௗԏǹ᏾ӝ‫ځ‬
дᔈҔ඲ТϷϣࡌ௦ҔӈՍ ATA ϟय़(SATA)‫܈‬೯ҔՍӈ༊ࢬ௨)USB)໺ᒡϟय़
‫ޑ‬ฯᅷ฻Ƕ!
‫ځ‬ύǴϣࡌ USB ໺ᒡϟय़Ǵ٬Ҕ‫ޣ‬ёаᇸ᚞Ӧ٬Ҕ USB ୵ೱௗᐒ΢౯ᆶ
ฯᅷԄᒵቹᐒ(DVR)‫ঁک‬Γᒵቹᐒ(PVR)Ǵ٠ቚ຾ᐒ΢౯ᆶًؓӭ൞ᡏ‫س‬಍฻൞
ᡏ՛ܺᏔ‫ޑ‬ೱௗ‫ૈ܄‬ǶUSB ୵‫ޑ‬း࿼Ǵε൯ගܹ٬Ҕ‫ޑޣ‬Бߡ‫܄‬ᆶቚуӭϡϯ
‫ুޑ‬኷٦‫ڙ‬ǴUSB ୵ӧ‫س‬಍ύ‫ڀ‬Ԗᖐ‫ى‬ᇸख़ቹៜΚǴӢԜ໒ว‫ޣ‬ӧԵໆ USB ୵
೛ी‫ޑ‬ӕਔǴӼӄ‫܄‬ᆶᛙ‫ࢂ܄ۓ‬ό৒۹ຎ‫ޑ‬ፐᚒǶ!
USB ୵ႝၡ೛ी२ख़Ӽӄ
୵ႝၡ೛ी२ख़Ӽӄ
΋૓ USB ୵‫ޑ‬ႝၡࢎᄬ(კΒ)ǴЬाхࡴ USB ௓‫ڋ‬Ꮤ(Controller)Ϸ USB
໒ᜢ඲Т(Switch)ǴӧԜа؊ՎъᏤᡏ‫ ޑ‬AIC1516D ࣁ‫ٯ‬ᇥܴ USB ႝྍ໒ᜢ඲
Т‫ޑ‬ௗဌ‫ۓ‬ကϷπբচ౛Ƕ
VCC
5.0V
+
10K
33μF
4.50V to 5.25V
Upstream VBUS
100mA max
10K
AIC1722
VBUS
IN
D+
+
D-
1μF
CIN
GND
OUT
10μF
COUT
AIC1516D
ON/OFF
CTLA
OUTA
OVERCURRENT
FLGA
IN
OVERCURRENT
FLGB
GND
VIN
+
GND
Ferrite
Bead
USB Controller
ON/
VBUS
+
0.1μF
33μF
*
D+
0.01μF
DGND
CTLB OUTB
GND
DATA
DATA
+
VBUS
33μF
*
D+
0.01μF
DGND
DATA
კ 2. USB ୵ႝၡࢎᄬ!
!
!
!
!
Vcc
+5v
10K
10K
ON
1
OFF
2
3
ON
OFF
4
CTLA
OUTA
FLGA
IN
FLGB
GND
CTLB
OUTB
AIC1516
8
OUTA
7
6
0.1uF
33uF
5
OUTB
33uF
კ 3. Power Switch ᔈҔႝၡ
!
კ 3 ࣁ၀ϡҹᔈҔႝၡǴௗဌх֖΋ಔᒡΕႝྍ(VIN =3.3V or 5V)ǵΒಔᒡ
рᆄ(OUTAǵOUTB)ǵΒಔठૈ(Enable)ૻဦ(CTLAǵCTLB)ϷΒಔ౦தૻဦ
(FLGAǵFLGB)Ƕ၀ී USB ႝྍ໒ᜢ඲Т୏բচ౛ࣁ྽ AIC1516D ୀෳ‫ډ‬ၸႝ
ࢬ(Over Current)ਔǴFLG ཮ଌрૻဦ๏ USB ௓‫ڋ‬ᏔǴԜਔǴUSB ௓‫ڋ‬Ꮤ཮ୀ
ෳ‫ډ‬౦தૻဦǴ٠᝻ว AIC1516D ϐ CTL ૻဦǴ٬‫ځ‬ஒᒡрᜢഈǴаၲ‫ډ‬ၸႝ
ࢬߥៈ‫ޑ‬Ҟ‫ޑ‬Ƕऩ೛ी‫ࣁޣ‬࿯࣪ԋҁǴԶ࣪ౣ USB ໒ᜢ඲ТǴ߾ёૈӢၸႝࢬǴ
ஒ‫ځ‬дຼᜐϡҹᐨ྄ǴࣗԿ೷ԋ᏾ঁ඲Тཞ໾ǴӢԜόёό཈Ƕ
USB ໒ᜢфૈෳ၂
໒ᜢфૈෳ၂‫ע‬ᜢ౦தૻဦ
фૈෳ၂‫ע‬ᜢ౦தૻဦ
კ 4a ࣁ AIC1516D ‫ޑ‬ჴෳ‫׎ݢ‬კǴࣁෳ၂ FLG ૈց҅தଌрૻဦǴӧԜ
‫څ‬ཀᇙ೷ၸႝࢬаߡᢀჸ FLG ૻဦǴёаҗკ 4a ࣮‫ډ‬วғၸႝࢬࡕ࿶ၸஒ߈ 4
డࣾ(ms)‫ޑ‬ਔ໔ǴFLG วр౦தૻဦ(High to Low)ǴҗԜள‫ ځޕ‬FLG ૻဦёа
҅தπբǶFLG ૻဦ‫ۯ‬ᒨ(Delay)4 డࣾࡕωวр౦தૻဦǴҞ‫ࣁࢂޑ‬ᗉխ USB
ӧක‫(ܘ‬Plug-In)‫ޑ‬ᕓ໔ౢғεႝࢬǴԶᡣ USB ௓‫ڋ‬Ꮤౢғᇤղ‫ޑ‬ёૈǴࡺஒ FLG
ૻဦ‫ۯ‬ᒨ΋ࢤਔ໔(εऊ 1.5~7 డࣾ)ࡕǴӆวр౦தૻဦԿ USB ௓‫ڋ‬ᏔǶ
ќ΋Бय़ǴЖᓸᙹ‫(ۓ‬Under Voltage Locked-Out, UVLO)ჹ‫ ܭ‬USB ୵᏾ᡏႝၡ‫ޑ‬
Ӽӄ‫܄‬Ψࢂόёᇸ۹ǴѬஒᔠෳᒡΕႝᓸ‫ޑ‬ελǴऩᒡΕλ‫ࢌܭ‬ႝᓸॶਔஒᒡр
ᘐၡ‫ޑ‬фૈǴෳ၂่݀ӵკ 4b ‫܌‬ҢǴջᒡΕե‫ ܭ‬2.4 ҷ੝ਔǴ཮ஒᒡрᜢഈǴ
Զό཮ӢࣁᒡΕႝᓸၸեԶ٬ள USB ௓‫ڋ‬Ꮤวғ౦த‫୏ޑ‬բǶ
VOUT
VIN
FLG
VOUT
IIN
კ 4a.
კ 4b.
ႝၡ໒ᜢႝၡ
ႝၡ໒ᜢႝၡ‫ڗ‬жࣁ
໒ᜢႝၡ‫ڗ‬жࣁߥᓀํᔈҔ
‫ڗ‬жࣁߥᓀํᔈҔ
ൂ൩ AIC1516ǵ17ǵ18ǵ19 ‫س‬ӈԶ‫ق‬ǴନΑၸႝࢬߥៈѦǴᗋ‫ڀ‬Ԗอၡߥ
ៈ(Short Circuit Protection)Ε዗ߥៈ(Thermal Shutdown Protection)Δࡺё଺ࣁ
ߥᓀํٰճҔǴ‫ځ‬ᔈҔጕၡӵკ 5 ‫܌‬ҢǶ
Vin
U1
1
2
+ C1
47uF
3
4
CTLA
OUTA
FLGA
IN
FLGB
GND
CTLB
OUTB
AIC1516-0
AIC1517-0
AIC1518-0
AIC1519-0
8
OUTA
7
6
5
OUTB
C4
0.1uF
+ C3
100uF
+ C2
100uF
კ 5. Fuse ᔈҔႝၡ
่ፕ
ኧՏਔж‫ٰޑ‬ᖏǴ஥๏Γᜪ‫׳‬ӭু኷‫ޑ‬ᡏᡍǴՠӕਔΨԖ‫׳‬ӭ‫ೌמޑ‬౟ᓍۘ
ࡑլܺǶًҔু኷ѱ൑୘ᐒคज़ǴӵՖ᏾ӝ‫س‬಍ౢࠔǴ໣ӭфૈ‫ܭ‬΋ᐒǴஒࢂ҂
ٰख़ा೛ीᖿ༈Ǵӧќ΋Бय़Ǵ ऩ‫س‬಍ૈ೸ၸ໺ᒡϟय़ᆶѦ೽ၗྍೱௗǴ‫ૈ׳‬
วච᏾ᡏਏ੻Ǵࡺ໺ᒡϟय़‫ޑ‬Ӽӄ‫܄‬ᆶᛙ‫៳܄ۓ‬ฅԋࣁ೛ी‫ޑޣ‬ख़ाፐᚒǴΨࢂ
ගܹᝡ‫ޑ܄ݾ‬όΒ‫ߐݤ‬Ƕ