lc7872e Sanyo Semiconductor Corporation, lc7872e Datasheet
lc7872e
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lc7872e Summary of contents
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... Ordering number : EN4868A Overview The LC7872E is a CMOS LSI that integrates in a single chip the signal processing functions required for compact disk graphics (CD-G) decoding. The LC7872E accepts the subcode signals output by a CD-DSP chip such as the Sanyo LC786X series, LC7862XE series or ...
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... Block Diagram Microcontroller interface Pin Assignment LC7872E TRANS0 to TRANS5 No. 4868-2/17 ...
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... HRESET, VRESET, N/P1, N/P2, RESET, SON: IL Input low level current V V (2) PALID SBCK, WE, RAS, CAS, OE A7, DB0 to DB3, Output high level voltage V CDGM, TRANS0 to TRANS5, VSYNC, YS, CSYNC, OH EFLG, FSX, FSC: I LC7872E = Symbol Conditions max DD V max IN max OUT Pd max Topr ...
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... Video setup time t Superimposition: Figure 7 VS NTSC mode: Figure 8 SBCK output delay time t SD PAL mode: NTSC mode: Figure 8 SBCK cycle frequency f SC PAL mode: PW setup time t Figure 8 PWS LC7872E Conditions = min typ max Unit – ...
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... Figure 1 Microcontroller Interface Timing DB0 to DB3 Figure 2 DRAM Read Cycle LC7872E No. 4868-5/17 ...
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... DB0 to DB3 Figure 3 DRAM Early Write Cycle DB0 to DB3 Figure 4 DRAM Page Mode Read Cycle LC7872E No. 4868-6/17 ...
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... DB0 to DB3 Figure 5 DRAM Page Mode Write Cycle Figure 6 DRAM CAS before RAS Refresh Cycle Figure 7 Phase Relationships in Superimposition Mode LC7872E No. 4868-7/17 ...
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... Pin S1 = Pin S2 = High Figure 8 Subcode Interface Figure 9 Composite Video 8-Bit Digital Values (Color Bar Output LC7872E No. 4868-8/17 ...
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... YS O Superimposition control output 48 CSYNC O Composite synchronization signal output 49 4FSC2 I Superimposition mode external clock input (feedback resistor built in) 50 EFLG O Error state monitor LC7872E Function (pull-down resistor built in DSP 0 0 LC7861N/ LC7860K/ LC7868/69/681 Continued on next page. ...
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... XOUT1 O Crystal oscillator connection 14.31818 MHz (NTSC) CD-G Instructions The LC7872E supports the following instructions that appear in the subcodes as described in the CD Red Book. 1. MODE = 0, ITEM = 0 ZERO mode 2. MODE = 1, ITEM = 0 LINE GRAPHICS mode • Write FONT instruction (4) • Write Scroll SCREEN instruction (12) 3. MODE = 1, ITEM = 1 TV-GRAPHICS mode • ...
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... MHz 14.30244 MHz * 2. Subcode Interface; S1, S2, SBSY, SFSY, PW, SBCK and MUTE The LC7872E supports three interface modes under the control of pins S1 and S2. When the MUTE pin is set high, SBSY and PW input is disabled and SBCK output stops. S1 Low S2 Low Mode LC7861N/67 interface The SBCK delivery condition is that SFSY be confirmed to be low about 2.2 µ ...
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... The image may be disrupted if the VRESET and HRESET signals are not synchronized with 4FSC2. The PALID pin is controlled in PAL mode, and is used to match the LC7872E burst signal to the burst component of the external video signal. When this pin is high, the phase of the burst signal changes every horizontal period, and when this pin is low, the phase does not change ...
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... CD Graphics Monitor; CDGM The CDGM pin goes high when the LC7872E receives any CD-G instruction. Since once this pin goes high it remains high as long as power is applied, using this pin requires a reset when the disk is changed. 6. Video Output; VIDEO A composite video signal is output from the VIDEO pin. The output level of the 8-bit D/A converter is 2.5 Vp-p. ...
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... Position is adjustable in two dot units from –16 to +14 dots from the center. Register 2 (on/off settings for channels Data: lsb [ msb; Default channel off 1: on LC7872E msb msb; Where AAAA is the register number No. 4868-14/17 ...
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... Default Enables the TRANS setting. 0: Invalid (The whole screen is displayed and burst goes to the CDG side the BGC TRANS value LC7872E [ ...
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... P = PF0 and PF1 (P error correction flags) Note that when it is not necessary to read out all 19 bytes, the readout can be interrupted at any point in byte units. (In particular, this command can be used to read out only the check flags.) LC7872E msb msb msb the subcode input. ...
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... NTSC Application Circuit Using the LC7872E No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. ...