DS90CP04 Datasheet, PDF (13/18 Pages) National Semiconductor (TI) – 4x4 Low Power 2.5 Gb/s LVDS Digital Cross-Point

ؾితಛੑ ( ͖ͭͮ)
FIGURE 10. Configuration and Output Enable/Disable Timing
ػೳઆ໌
γϦΞϧɾΠϯλϑΣʔεʹΑΔϓϩάϥϛϯά
γϦΞϧɾΫϩοΫ SCLK ͱγϦΞϧೖྗσʔλϥΠϯ SI Ͱߏ੒͞
ΕΔ୯७ͳγϦΞϧɾΠϯλϑΣʔεΛհͯ͠ɺ಺෦ϚϧνϓϨΫα
ʹߏ੒ΛϓϩάϥϜͰ͖·͢ɻγϦΞϧɾΠϯλϑΣʔε͸ɺେن໛
εΠονɾΞϨΠʹ༰ қʹ֦ ு Ͱ͖ΔΑ͏ʹઃ ͞ܭΕ͍ͯ·͢ɻ
DS90CP04 Ͱߏ੒ͨ͠ϚτϦοΫεɾΞϨΠͷ࣍ஈͷϩʔɾσόΠ
ε͸ɺόοϑΝ͞ΕͨγϦΞϧɾΠϯλϑΣʔεग़ྗ (RSCLKɺRSO)
Λ࢖ͬͯ઀ଓ͠·͢ɻ ಉ༷ʹɺϚτϦοΫεɾΞϨΠͷ࣍ஈͷίϥ
ϜɾσόΠε͸ɺόοϑΝ͞ΕͨγϦΞϧɾΠϯλϑΣʔεग़ ྗ
(CSCLKɺCSO) Λ࢖ͬͯ઀ଓ͠·͢ɻ͜ͷϑΟʔυεϧʔ͞ΕΔ
RSCLKͱRSOɺCSCLKͱ CSO ͷ֤όοϑΝ৴߸Λ࢖༻͢Δํ
ࣜʹΑΓɺϢʔβʔ͸୯Ұͷόε (SCLKͱ SI) ͰϚτϦοΫε಺ͷ
͢΂ͯͷσόΠεΛϓϩάϥϜͰ͖·͢
εΠονͷߏ੒ΛϓϩάϥϜ͢Δʹ͸ɺσόΠεʹ 30 Ϗοτͷ੍ޚ
ϫʔυΛ༩͑·͢ɻ ࠷ॳͷ 6 ϏοτͰελʔτɾϑϨʔϜ͕ SI ΁γ
ϑτΠϯ͞Ε·͢ɻ༗ޮελʔτɾϑϨʔϜʹ͸ɺߏ੒ϩʔυͷ 1FH
ͱɺߏ੒ಡΈग़͠ͷ 1EH ͷ 2 छྨ͕͋Γ·͢ɻελʔτɾϑϨʔ
Ϝʹଓ͍ͯɺΞΫηε͢ΔσόΠεͷϩʔɾΞυϨεͱίϥϜɾΞυ
Ϩεɺ͞Βʹ 4 νϟωϧ෼ͷεΠονߏ੒σʔλ͕ૹΒΕ·͢ɻ
Table 1. 30-Bit Control Word͓Αͼ Table 2. Switch Configuration
Data ޚ੍ʹϫʔυͷϏοτఆٛΛࣔ͠·͢ɻD29 ͕ SI ʹγϑτΠϯ
͞ΕΔઌ಄ϏοτͰ͢ɻ
Ϗοτ
D29–D24
D23–D18
D17–D12
D11–D9
D8–D6
D5–D3
D2–D0
TABLE 1. 30-Bit Control Word
Ϗοτ௕
6
6
6
3
3
3
3
આ໌
ޚ੍ϫʔυಉ༻ظͷελʔτɾϑϨʔϜͰ͢ɻ (01 1111'b ʹ LOAD)
ΞΫηε͢ΔσόΠεͷϩʔɾΞυϨεΛࢦఆ͠·͢ɻγϦΞϧɾΠϯλϑΣʔε͸࠷େ 64 ݸͷϩʔɾσόΠ
εΛΞΫηεͰ͖·͢ɻ
ΞΫηε͢ΔσόΠεͷίϥϜɾΞυϨεΛࢦఆ͠·͢ɻγϦΞϧɾΠϯλϑΣʔε͸࠷େ 64 ݸͷίϥϜɾσ
όΠεΛΞΫηεͰ͖·͢ɻ
ग़ྗ 1 ༻ͷεΠονߏ੒Λࢦఆ͠·͢ɻ Table 2. Switch Configuration Data Λࢀর͍ͯͩ͘͠͞ɻ
ग़ྗ 2 ༻ͷεΠονߏ੒Λࢦఆ͠·͢ɻ Table 2. Switch Configuration Data Λࢀর͍ͯͩ͘͠͞ɻ
ग़ྗ 3 ༻ͷεΠονߏ੒Λࢦఆ͠·͢ɻ Table 2. Switch Configuration Data Λࢀর͍ͯͩ͘͠͞ɻ
ग़ྗ 4 ༻ͷεΠονߏ੒Λࢦఆ͠·͢ɻ Table 2. Switch Configuration Data Λࢀর͍ͯͩ͘͠͞ɻ
TABLE 2. Switch Configuration Data
MSB
LSB OUT1 ʶʹର͢Δ઀ଓ OUT2 ʶʹର͢Δ઀ଓ OUT3 ʶʹର͢Δ઀ଓ OUT4 ʶ ʹର͢Δ઀ଓ
0 0 0 ग़ྗ 1 ͸ TRI-STATE ग़ྗ 2 ͸ TRI-STATE ग़ྗ 3 ͸ TRI-STATE ग़ྗ 4 ͸ TRI-STATE
0 0 1 IN1 ʶ
IN1 ʶ
IN1 ʶ
IN1 ʶ
0 1 0 IN2 ʶ
IN2 ʶ
IN2 ʶ
IN2 ʶ
0 1 1 IN3 ʶ
IN3 ʶ
IN3 ʶ
IN3 ʶ
1 0 0 IN4 ʶ
IN4 ʶ
IN4 ʶ
IN4 ʶ
1 0 1 ແޮɻ
13
www.national.com/JPN/