SM8701 Nippon_Precision_Circuits America, SM8701 Datasheet
SM8701
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SM8701 Summary of contents
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... NIPPON PRECISION CIRCUITS INC. OVERVIEW The SM8701BM MHz master clock, 5-system output clock generator for DVD players. It has 2 built-in PLLs that, with the addition of a single crystal oscillator element, can generate 256fs, 384fs and 768fs clocks plus independent fixed-frequency 27 MHz and 33.8688 MHz output clocks. Supported sampling frequencies (fs) include the standard 32, 44 ...
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... BLOCK DIAGRAM Divider0 XTI Oscillator XTO P/S MLEN/R2 External Interface MDT/R0 MCK/R1 Divider1 Reset RSTN Circuits SM8701BM Charge Phase LPF0 Comparator0 Pump0 Divider0 Charge Phase LPF1 Comparator1 Pump1 Divider1 VCO0 SO4 SO3 Divider SO2 SO1 VCO1 MO MON NIPPON PRECISION CIRCUITS—2 ...
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... Schmitt trigger input with pull-down resistor 2. Schmitt trigger input with pull-up resistor SM8701BM Description Control signal input. In serial mode: latch enable signal In parallel mode: sampling rate select signal Mode select signal serial mode, HIGH: parallel mode ...
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... – Input voltage range Output voltage range Pow er dissipation Storage temperature range Recommended Operating Conditions P arameter Supply voltage ranges V Operating temperature range SM8701BM Condition , – – V ...
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... -level input current HIGH-level input current -level input current HIGH-level output voltage -level output voltage 1. P/S, MLEN/R2, MCK/R1, MDT/R0. Schmitt trigger input, internal pull-down Schmitt trigger input, internal pull-up. SM8701BM = V = 4 DDP DDO Condition All supplies ...
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... The characteristics of output clock jitter and output clock duty depends on crystal oscillator ’s standard crystal oscillator 10.5 measurement apparatus: HP4195 Load capacitance Time from OFF condition to stable frequency output. SM8701BM = V = 4 DDP DDO Condition ± ...
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... Time from the MLEN falling edge to the next MCK rising edge. If the MCK clock stops after the LSB, the MLEN rise timing is optional. 2. Time from MCK rising edge corresponding to the LSB to the MLEN rising edge. MCK MSB MDT t MLS MLEN SM8701BM = V = 4 DDP DDO Condition ...
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... XTI (Pin6 33pF SM8701BM XTO (Pin5) Open XTI (Pin6) External Clock SM8701BM SM8701BM in figure 2. Input 27MHz master clock on XTI when using an external clock. Crystal oscillator element must be fundamental. Oscillator Figure 1. Crystal oscillator connection Internal Oscillator Circuits Figure 2. External clock input ...
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... Standard 44.1 kHz 48 kHz 64 kHz ble 88.2 kHz 96 kHz Reset The SM8701BM supports an external reset using RSTN (pin 18). At reset, the mode register takes its default value, and the output clocks have default fre- quencies. RSTN Internal Reset 1 Master Clock SM8701BM trol inputs ...
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... Operation Control The SM8701BM functions are controlled by inputs MLEN/R2 (pin 1), MDT/R0 (pin 19) and MCK/R1 (pin 20). The operating mode is selected by input P/S (pin 2)—serial control when P/S is LOW, and paral- lel control when P/S is HIGH. Table 2 shows the relationship between functions and mode. Serial control (P/S = LOW) When P/S is LOW, the control interface is serial con- trol mode ...
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... When the sampling frequency is changed, a settling time (max) is required to make the output frequency stable. The SO2 to SO4 output response MLEN SO2 to 4 SO1 SM8701BM Sampling rate Sampling frequency gro u p Standard 48 kHz Standard 44.1 kHz Standard 32 kHz ...
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... Note that in parallel control mode, clock output enable/disable controls are not available. Also note that the reset function does not affect the sampling SM8701BM R1 (pin 20) and R0 (pin 19) and functions are shown in table 6. Sampling rate Sampling frequency gro u p ...
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... Master clock stability affects the other outputs sta- bility. In the usage of crystal oscillator, load capacitor and crystal oscillator should be placed as close to the SM8701BM as possible, and wired shortly. Select crystal oscillators and load capaci- tance carefully, depending on the condition, as those combination will have influence on the fre- quency accuracy(C1, C2) ...
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... Customers shall not expor t, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. SM8701BM NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, Japan ...