BH3857FV Audio ICs @Block diagram Zz a + Pp mM - 9 8 6 & &E & EF 8 = ee ee ep eb 85 PE EB 8 Bg g BE (+) foe] [os] [>] foe] fos) [oe] fee] foe] [er] feo] Feo) [en] er] Pes) es] Pee) fe] Pee] ee] [ser] | 4 TREBLE TREBLE VOLUME VOLUME scsietiiic] CONTROL ssstezezsz? # rr acezrce t brrprccrc- 1 : I TONE | vouumte | MATRIX SURROUND2 4 VOLUME TONE a a an 1 MATRIX """T MATRIX SURROUND1 SURROUND1 BASS BASS Le} Le} Ls] Led BYN2 8 a 5 oa a z H kK [=| [e] | EJ Ls EI avourt [| sist [a | [16] x z wo BING | z [8] Qo Control of volume, bass, treble and surround 2 can also be done by external application of a DC voltage to the VC {volume), BC (bass), TC (treble) and SC (surround 2} terminals. OThe impedance of the VC, TC, and BC terminals is 10k Q (typ.}. OThe impedance of the SC terminal is 200k Q (typ.). Audio accessory components F | Sound control 513Audio ICs BH3857FV Neer eee reer eee eee ee eee eee eee eee eee eee en a (2) Logic input terminals Logic input terminals have a bipolar construction, so take care with regard to source current. (3) Timing chart The timing chart is shown in Fig. 3. Timing (recommended conditions) Fig.3 Timing chart constants Parameter Symbol Min. Typ. Max. Unit H input voltage Vin 4.0 5.0 6.0 Vv L input voltage Vii _ 0 1.0 Vv Minimum clock width tw 2.0 _ _- uS Minimum data width tw (DATA) 2.0 - - us Minimum latch width tw (LATCH)| 2.0 - - Ss Setup time (DATA to CLK) tsu 1.6 _ _- uS Hold time (CLK to DATA) th 1.0 _ _ HS Setup time (CLK to LATCH) ts 1.0 _ _ uS Hold the logic terminal inputs at a"L" voltage untll the voltage on tha Voc terminal reaches tha minimum operating voltage (5.47). The port terminals (pins 26 to 29) are off (open) at this time. 518 RomNotes The contents described in this catalogue are correct as of March 1997. No unauthorized transmission or reproduction of this book, sither in whole or in part, is permitted. The contents of this book are subject to change without notice. Always verify before use that the contents are the latest specifications. If, by any chance, a defect should arise in the equipment as a result of use without verification of the specifications, ROHM CO., LTD., can bear no responsibility whatsoever. Appiication circuit diagrams and circuit constants contained in this data book are shown as examples of standard use and operation. When designing for mass production, please pay careful attention to peripheral conditions. Any and all data, including, but not limited to application circuit diagrams, information, and various data, described in this catalogue are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO., LTD., disclaims any warranty that any use of such device shall be frae from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes absolutely no fiabillty in the event of any such infringemeni, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices; other than for the buyer's right to use such devices itself, resell or otherwise dispose of the same; no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD., is granted to any such buyer. The products in this manual are manufactured with silicon as the main material. The products in this manual are not of radiation resistant design. The products listed in this catalogue are designed to be used with ordinary electronic equip- ment or devices (such as audio-visual equipment, office-automation equipment, communica- tions devices, electrical appliances, and electronic toys). Should you intend to use these prod- ucts with equipment or devices which require an extremely high level of reliability and the malfunction cf which would directly endanger human lita (such as medical instruments, trans- portation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers, or oth- er safety devices) please be sure to consult with our sales representatives in advance. Notes when exporting It is essential to obtain export permission when exporting any of the above products when it falls under the category of strategic material (or labor) as determined by foreign exchange or foreign trade control laws. * Please be sure to consult with our sales representatives to ascertain whether any prod- uct is classified as a strategic material,