Ordering number :EN *5684 CMOS LSI LC74201E Video CD Decoder Preliminary Overview Package Dimensions The LC74201E is a CMOS LSI that reduces the signal processing functions required of a video CD decoder to a single chip. All that it takes to make a version 1 or version 2 video CD player is the addition of a CD digital signal processor, DRAM, an audio D/A converter, digital video encoder, and similar components. unit: mm 3182-QFP-128E [LC74201E] Features • Incorporation of virtually almost all the functionality required by a video CD player from the CD-ROM decoder through to the MPEG audio and video decoders in a single chip • Fully automatic playback with automatic decoding within the LSI in response to simple external commands and the MPEG bit stream • Special playback functions are activated by command inputs, and do not require signal processing by the host microcomputer • Support for two external DRAM configurations: 4 M bits (256k × 16 bits) or 4 M bits (256k × 16 bits) + 1 M bit (64k × 16 bits) • Support for a Track 1 DRAM user area (i.e., sector buffer) of up to 8 k bytes (4 M bits of external DRAM) or 22 k bytes (5 M bits of external DRAM) • Automatic synchronization of audio and video • Built-in high-speed decoder core that supports variablespeed video playback at up to quadruple speed. Audio support for normal and double-speed playback. • Internal registers that offer configuration settings for connecting to most commercially available CD digital signal processors and D/A converters • Compatible with version 2 of the video CD standard. Support for superimposition of closed caption data on the output signal as specified in the EIA608 standard • Support for Photo CD standard. (Base/4 and Base/16) SANYO: QIP-128E SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 22897HA (OT) No. 5684-1/21 LC74201E Pin Assignment No. 5684-2/21 LC74201E Pin Function 1. Power supply, test pin, unconnected pins Pin No. Symbol I/O Logic Function DVDD1 – – System power supply (3-V power supply: 3.7 to 4.0 V) DVSS1 – – System power supply (connect to ground) DVDD2 – – Power supply for 5-V I/O pins (5-V power supply: 5.5 ± 0.5 V) DVSS2 – – Power supply for 5-V I/O pins (connect to ground) 65 AVSS – – Power supply for VCO and PLL (connect to ground) 67 AVDD – – Power supply for VCO and PLL (3-V power supply: 3.7 to 4.0 V) 125 CLKO Out Positive Power supply for VCO and PLL (connect to ground) 127 TEST In Positive Test mode control pin (normally kept at low level) NC – – 17 39 60 75 81 124 20 37 54 69 76 105 29 114 33 112 Unconnected pins 34, 36, 40, 42, 53, 57, 64, 82, 83, 84 pins 85, 86, 97, 98, 108, 110, 126, 128 pins No. 5684-3/21 LC74201E 2. Clock pins Pin No. Symbol I/O Logic Function 18 FSCO Out Positive Subcarrier clock output (frequency = 1/4 pixel clock frequency). Tristate output using DVDD2 (5-V) power supply. 19 PCKO Out Positive Pixel clock output (NTSC-4fsc, PAL-4fsc, or 13.5 MHz). Tristate output using DVDD1 (3-V) power supply. 55 XPALIN In – 56 XPALOUT Out – 58 56 XNTIN In – 59 XNTOUT Out – 61 CLKSEL In Positive Clock selection control input. High: 54.0-MHz clock input from pin 62 (CLKIN); Low: clock from internal VCO oscillator. 62 CLKIN In Positive 54.0-MHz clock input (with built-in bias). When not used, connect to DVDD1 or DVSS1. 63 VCOR – – Adjustment resistor connection for VCO oscillator circuit. 66 PLLFIL – – PLL filter connection 68 CDCK In Positive Crystal oscillator connections for PAL-4fsc oscillation circuit (4fsc = 17.734475 MHz) Crystal oscillator connections for NTSC-4fsc oscillation circuit (4fsc = 14.31818 MHz) CD-DSP clock input (16.9344, 2.8224, or 2.1168 MHz) 3. Microcomputer interface Pin No. Symbol I/O Logic Function 38 REST In Negative System reset input (Hysteresis input; built-in pull-up resistor). 41 IRQ Out Negative Interrupt request signal output (N-channel open-drain output). 43 AS/DS (CE) In Positive Parallel interface: Address/data select input (Low = address). Serial interface: Serial transfer enable signal input (High = enabled). 44 STB (CL) In Positive Parallel interface: Strobe signal input for address input and data I/O. Serial interface: Serial transfer clock signal input. 45 AD0 (DO) I/O Positive Parallel interface: Address/data I/O port P0 (LSB). Serial interface: ZPSerial data output (LSB-first input). 46 AD1 (DI) I/O Positive Parallel interface: Address/data I/O port P1. Serial interface: Serial data input (LSB-first output). 47 AD2 I/O Positive 48 AD3 I/O Positive 49 AD4 I/O Positive 50 AD5 I/O Positive 51 AD6 I/O Positive 52 AD7 (MBS) I/O Positive Parallel interface address/data I/O ports. The interface mode is determined by the input levels at the AD4 to AD6 pins at the rising edge of the RESET pin input. • Serial interface: AD6:AD5:AD4 = 1:*:* (* = Don’t care) • Parallel interface: AD6:AD5:AD4 = 0:1:0 AD7: Parallel interface address/data I/O port P7 (MSB). Note: AD0 to AD7 use N-channel open-drain outputs. No. 5684-4/21 LC74201E 4. CD interfaces Pin No. Symbol I/O Logic 70 CDEMPH In Positive Emphasis input (hysteresis input) Function 71 CDC2P In Positive C2 error flag input (hysteresis input) 72 CDSD In Positive Serial data input (hysteresis input) 73 CDBCK In Positive Serial data bit clock input (hysteresis input) 74 CDLRCK In Positive Left/right clock input (hysteresis input) 5. Audio D/A converter interface Pin No. Symbol I/O Logic Function 77 AULRCK Out Positive Audio data left/right clock output 78 AUEMPH Out Positive Audio emphasis flag output 79 AUDOUT Out Positive Audio data serial output 80 AUBCO Out Positive Audio data bit clock output Note:The four pins making up the audio D/A converter interface all use N-channel open-drain outputs. 6. Video interface Pin No. Symbol I/O Logic Function 1 BV0 (LSB) I/O Positive 2 BV1 I/O Positive 3 BV2 I/O Positive 4 BV3 I/O Positive Tristate output using DVDD1 (3-V) power supply. 5 BV4 I/O Positive Video signal outputs (B/V signals). (Inputs only in test mode.) 6 BV5 I/O Positive 7 BV6 I/O Positive 8 BV7 (MSB) I/O Positive Tristate output using DVDD2 (5-V) power supply. 9 GU0 (LSB) I/O Positive Video signal outputs (G/U signals). (Inputs only in test mode.) 10 GU1 I/O Positive 11 GU2 I/O Positive 12 GU3 I/O Positive Tristate output using DVDD1 (3-V) power supply. 13 GU4 I/O Positive Video signal outputs (G/U signals). (Inputs only in test mode.) 14 GU5 I/O Positive 15 GU6 I/O Positive 16 GU7 (MSB) I/O Positive Tristate output using DVDD2 (5-V) power supply. 21 RY0 (LSB) I/O Positive Video signal outputs (R/Y signals). (Inputs only in test mode.) 22 RY1 I/O Positive 23 RY2 I/O Positive 24 RY3 I/O Positive Video signal outputs (B/V signals). (Inputs only in test mode.) Tristate output using DVDD1 (3-V) power supply. Continued on next page. No. 5684-5/21 LC74201E Continued from preceding page Pin No. Symbol I/O Logic Function 25 RY4 I/O Positive 26 RY5 I/O Positive 27 RY6 I/O Positive 28 RY7 (MSB) I/O Positive Tristate output using DVDD2 (5-V) power supply. 30 HSYNC Out Negative Horizontal synchronization signal output. Tristate output using DVDD2 (5-V) power supply. 31 CSYNC Out Negative Composite synchronization signal output. Tristate output using DVDD2 (5-V) power supply. 32 BLANK Out Positive Blanking signal output (horizontal and vertical blanking interval signal). Tristate output using DVDD2 (5-V) power supply. 35 VOE In Positive Video output enable signal input. High: Enable output. 87 DD15 (MSB) I/O Positive Data bus to DRAM. 88 DD14 I/O Positive 89 DD13 I/O Positive 90 DD12 I/O Positive 91 DD11 I/O Positive 92 DD10 I/O Positive 93 DD9 I/O Positive 94 DD8 I/O Positive 95 DD7 I/O Positive 96 DD6 I/O Positive 99 DD5 I/O Positive 100 DD4 I/O Positive 101 DD3 I/O Positive 102 DD2 I/O Positive 103 DD1 I/O Positive 104 DD0 (LSB) I/O Positive Tristate output using DVDD2 (5-V) power supply. 106 RAS1 Out Positive Row address strobe signal output to expansion 1-Mbit DRAM. Tristate output using DVDD2 (5-V) power supply. 107 RAS0 Out Positive 7 109 WE Out Positive Write enable signal output to DRAM. Tristate output using DVDD2 (5-V) power supply. 111 CAS Out Positive Column address strobe signal output to DRAM. Tristate output using DVDD2 (5-V) power supply. 113 OE Out Positive Output enable signal output to DRAM. Tristate output using DVDD2 (5-V) power supply. Video signal outputs (R/Y signals). (Inputs only in test mode.) Continued on next page. No. 5684-6/21 LC74201E Continued from preceding page Pin No. Symbol I/O Logic 115 AA8 (MSB) Out Positive 116 AA7 Out Positive 117 AA6 Out Positive 118 AA5 Out Positive 119 AA4 Out Positive 120 AA3 Out Positive 121 AA2 Out Positive 122 AA1 Out Positive 123 AA0 (LSB) Out Positive Function Address output to DRAM. Tristate output using DVDD2 (5-V) power supply. Block Diagram No. 5684-7/21 LC74201E Block Descriptions 1. CD-ROM decoder This block takes the MPEG bit stream from the external CD digital signal processor and decodes it in accordance with the CD-ROM standard. • • • • The decoded data is automatically transferred to the next stage, the system decoder. Storing the decoded data in DRAM is also possible. The high-speed decoder core supports quadruple-speed playback. Internal registers offer settings for connecting to most commercially available CD digital signal processors. — 32- or 24-slot — LSB or MSB first — Front- or rear-packing for data — Rising or falling edge for bit clock • The video CD’s track 1 data can be stored in a user area set aside in the external DRAM. • An auto restart function stores the address of the last sector accessed before a pause so that playback can resume at the next sector when the pause ends. • The contents of the sector header and subheader are available from registers. 2. System decoder This block analyzes the MPEG bit stream, splits it into video and audio bit streams, and transfers these bit streams to the corresponding decoders. It calculates the decode start timing from the time stamp and the decoders’ inherent delays and generates the necessary start signals to provide automatic synchronization of audio and video outputs. 3. CPU interface This interface allows the CPU to access the internal registers to set parameters controlling operation and to read out operational status. It may be configured as either an 8-bit parallel interface multiplexing data and addresses or as a 4-wire serial interface. 4. Audio decoder This block decodes the MPEG1 audio bit stream from the system decoder in accordance with the ISO11172-3 standard. • • • • • • The use of 24-bit internal precision yields high audio quality. The decoder supports all MPEG audio modes defined for layers 1 and 2 except the free format mode. Internal registers offer settings for connecting to most commercially available D/A converters. The block includes a cross attenuator compliant with the CD-i standard. The block supports readout of the frame header data. The block performs CRC checking. If there is an error, it automatically substitutes the preceding frame stored in DRAM. If there are continuous errors, it switches to muting. Cross Attenuator No. 5684-8/21 LC74201E 5. Video decoder This block decodes all layers (from the video sequence layer to the block layer plus the headers) from the MPEG1 video bit stream from the system decoder in accordance with the ISO11172-2 standard. • The decoding requires no external signal processing. The LSI internals handle everything automatically. All that is required from outside the chip are simple commands and the MPEG bit stream. • A PLL circuit permits synchronization of the system clock with the CD digital signal processor. Commands offer a choice of the following frequencies. — 16.9344 MHz — 2.8224 MHz — 2.1168 MHz • The decoder supports the following image formats. — 352 dots × 240 lines, 29.97 Hz (NTSC, PAL-60 Hz) — 352 dots × 240 lines, 23.976 Hz (Film) — 352 dots × 288 lines, 25.00 Hz (PAL) — 704 dots × 480 lines, high-resolution still image (NTSC) — 704 dots × 576 lines, high-resolution still image (PAL) • Built-in filters provide high image quality. — Built-in sampling rate conversion filter for horizontal direction — Built-in vertical filter • The decoder supports a variety of video output specifications. — Support for NTSC (59.94 Hz) and PAL (50 Hz) monitors — Built-in video timing generator — Switching between interlaced and non-interlaced operation — Built-in YUV-to-RGB conversion matrix with choice of 24-bit RGB, 24-bit YUV, and 16-bit YUV output — Film-NTSC conversion — Simple two-way conversion between NTSC or Film and PAL with built-in aspect ratio conversion — Choice of pixel clocks: 13.5 MHz, 6.75 MHz, and 4 fsc • The decoder offers special playback functions. — Special playback functions require no signal processing by the CPU. — Such functions as double-, triple-, and quadruple-speed playback, still image playback, pause, slow, and singlestepping (one-cut play) are available with simple commands. — The built-in multitile function offers the display of 4 or 16 small images on the screen with the display positions freely selectable and processing of up to two fields supported. — The built-in wipe function supports wiping within a frame, display outside that frame, and changing the frame color. • The decoder includes bit buffer management functions. — These monitor the bit buffer for errors and control the decoder to automatically adjust the amount of data in the bit buffer to maintain normal operation at all times. — Depending on the state of the bit buffer, the decoder automatically skips or repeats images. Skipping gives precedence to B pictures. • The decoder includes frame buffer management functions. These provide all internal support for frame buffer mapping control (for the display, reconstruction frame,front frame, and rear frame) and the mapping control and setting accompanying mode changes between high-resolution still images and motion picture playback. • The decoder includes various fail-safe functions. • The decoder supports version 2 of the video CD standard. — User data is accessible from outside the decoder. — The decoder supports superimposition of closed caption data on the output RGB/YUV signal as specified in the EIA608 standard. • The decoder supports decoding of Photo CDs (using Base/4 and lower). No. 5684-9/21 LC74201E 6. DRAM arbiter This block provides the interface to the external DRAM. In addition to the standard 4-M bit DRAM, there can also be a 1-M bit DRAM for supporting PAL high-resolution still image playback. If this additional DRAM is not available, the LSI trims the top and bottom 48 lines of the image and provides a function for vertically scrolling the display area in 16-line increments. No. 5684-10/21 LC74201E Absolute Maximum Ratings Parameter Symbol Power supply voltage Ratings Conditions min max Unit VDD1 DVDD1 pin DVSS1 – 0.3 DVSS1 + 4.0 V VDD2 DVDD2 pin DVSS2 – 0.3 DVSS2 + 6.0 V VDD3 AVDD pin AVSS – 0.3 AVSS + 4.0 V DVSS1 – 0.3 DVDD1 + 0.3 V DVSS1 – 0.3 5.5 V DVSS2 – 0.3 DVSS2 + 0.3 V DVSS1 – 0.3 DVDD1 + 0.3 V DVSS1 – 0.3 – V DVSS2 – 0.3 DVSS2 + 0.3 V BV0 to EV3, GU0 to GU3, RY0 to RY3, VIN1 RESET, XPALIN, XNTIN, CLKIN, VCOR, PLLFIL, TEST pins VOE, AS/DS, STB, AD0 to AD7, CLKSEL Input voltage VIN2 CDCK, CDEMPH, CDC2P, CDSD, CDBCK, CDLRCK pins VIN3 BV4 to BV7, GU4 to GU7, RY4 to TY7, DD0 to DD15 pins BV0 to EV3, GU0 to GU3, RY0 to RY3, VOUT PCK0, XPALOUT, XNTOUT, CLK0, AULRCK, AUEMPH, AUDOUT, AUBC0 pins Output voltage VOUT IRQ, AD0 to AD 7, CAS pins BV4 to BV7, GU4 to GU7, RY4 to TY7, VOUT FSC0, HSYNC, CSYNC, BLANK, RAS0, RAS1, WE, OE, AA0 to AA8 pins Maximum current drain Pd max – 500 mW Operating temperature Topr Ta = 25°C –25 +75 °C Storage temperature Tstg –40 +125 °C Recommended Operating Conditions at Ta = –25°C to +75°C Parameter Supply voltage High-level input voltage Low-level input voltage Clock frequency Input amplitude Input frequency Clock duty Symbol Conditions Ratings min typ max Unit VDD1 DVDD1 pin 3.7 – 4.0 VDD2 DVDD2 pin 4.5 5.0 5.5 V V VDD3 AVDD pin 3.7 – 4.0 V VIH1 BV0 to BV3, GU0 to GU3,RY0 to RY3 pins 0.7VDD1 – VDD1 + 0.3 V VIH2 RESET pin 0.8VDD1 – VDD1 + 0.3 V VIH3 VOE, AD0 to AD7, CDCK, CLKSEL, TEST pins 0.7VDD1 – 5.5 V VIH4 AS/DS, STB, CDEMPH, CDC2P, CDSD, CDBCK, CDLRCK pins 0.8VDD1 – 5.5 V VIH5 BV4 to BV7, GU4 to GU7, RY4 to RY7, DD0 to DD15 pins 0.7VDD1 – VDD2 + 0.3 V VIL1 BV0 to BV7, GU0 to GU7, RY0 to RY7, VOE, CDCK, AD0 to AD7, CLKSEL, TEST, DD0 to DD15 pins VSS1 – 0.3 – 0.3VDD1 V VIL2 RESET, AS/DS, STB, CDEMPH, CDC2P,CDSD, CDBCK, CDLRCK pins VSS1 – 0.3 – 0.2VDD1 V MHz FOSC1 XPALIN, XPALOUT pins (PAL) – 17.734475 – FOSC2 XNTIN, XNTOUT pins (NTSC) – 14.31818 – MHz 1.0 – VDD1 + 0.3 Vp-p Command – 11hex; D1, D0 = 0,0 – 16.9344 – MHz Command – 11hex; D1, D0 = 0,1 – 2.1168 – MHz VIN1 CLKIN pin (CLKSEL = high; FIN2 = 54 MHz) FIN1 CDCK pin – 2.8224 – MHz FIN2 CLKIN pin (CLKSEL = high) – 54.000 – MHz fduty CLKIN, CDCK pins 40 – 60 % Command – 11hex; D1, D0 = 1,0 No. 5684-11/21 LC74201E Electrical Characteristics at Ta = –25 to +75°C, DVDD1 = AVDD = 3.7 V and DVDD2 = 5.0 V unless otherwise specified. Parameter High-level input current Low-level input current Pull-up resistor Pull-down resistor Symbol Conditions IIH1 Ratings Unit min typ max AS/DS, STB, CDEMPH, CDC2P,CDSD, CDBCK, CDLRCK pins. Condition: VIN = 5.5 V – – 1 µA IIH2 VOE, CLKSEL, CDCK, TEST pins. Condition: VIN = 5.5 V – – 1 µA IIH3 RESET pin. Condition: VIN = DVDD1 – – 1 µA IIH4 CLKIN pin. (CLKSEL = low) Condition: VIN = DVDD1 – – 1 µA IIH5 VCOR, PLLFIL pins. (RESET = low) Condition: VIN = DVDD1 – – 1 µA IIH6 VCOR, PLLFIL pins. (RESET = low) Condition: VIN = DVDD1 – – 1 µA IIL1 AS/DS, STB, CDEMPH, CDC2P,CDSD, CDBCK, CDLRCK pins. Condition: VIN = DVSS1 –1 – – µA IIL2 VOE, CLKSEL, CDCK, TEST pins. Condition: VIN = DVSS1 –1 – – µA IIL3 RESET pin. Condition: VIN = DVSS1 –1 – – µA IIL4 CLKIN pin. (CLKSEL = low) Condition: VIN = DVSS1 –1 – – µA IIL5 VCOR, PLLFIL pins. (RESET = low) Condition: VIN = DVDD1 –1 – – µA IIL6 VCOR, PLLFIL pins. (RESET = low) Condition: VIN = DVDD1 –1 – – µA RPU1 RESET pin. Condition: DVDD1 = 3.7 V – 30 – kΩ RPD1 XPALIN pin. (NTSC mode) Condition: DVDD1 = 3.7 V – 30 – kΩ RPD2 XNTIN pin. (PAL mode) Condition: DVDD1 = 3.7 V – 30 – kΩ RPD3 DD0 to DD15 pins. (Standby mode) Condition: DVDD2 = 5.0 V 100 – – kΩ Continued on next page. No. 5684-12/21 LC74201E Continued from preceding page. Parameter Symbol Conditions Ratings min typ max Unit RBIAS1 XPALIN, XPALOUT, XNTIN, XNTOUT pins. Condition: DVDD1 = 3.7 V – 1 – MΩ RBIAS2 CLKIN pin. (CLKSEL = high) Condition: DVDD1 = 3.7 V – 1 – MΩ 3.2 – – V 3.5 – – V 4.5 – – V 3.5 – – V – – 0.5 V – – 0.2 V – – 0.5 V Built-in feedback resistor BV0 to BV3, GU0 to GU3, RY0 to RY3, PCK0, VOH1 VOH2 High-level output voltage AULRCK, AUEMPH, AUDOUT, AUBCO pins. Conditions: DVDD1 = 3.7 V, IOH = –1.0 mA CLK0 pin. Conditions: DVDD1 = 3.7 V, IOH = –1.0 mA BV4 to BV7, GU4 toGU7, RY4 toRY7, FSC0, VOH3 HSYNC, CSYNC, BLANK, DD0 to DD15 RAS0, RAS1, WE, OE, AA0 to AA8 pins. Conditions: DVDD1 = 3.7 V, IOH = –1.0 mA VOH4 XPALOUT, XNTOUT pins. Conditions: DVDD1 = 3.7 V, IOH = –0.1 mA BV0 to BV3, GU0 to GU3, RY0 to RY3, PCK0, VOL1 VOL2 Low-level output voltage AULRCK, AUEMPH, AUDOUT, AUBCO pins Conditions: DVDD1 = 3.7 V, IOL = 1.0 mA CLKO pin. Conditions: DVDD1 = 3.7 V, IOL = 1.0 mA BV4 to BV7, GU4 toGU7, RY4 toRY7, FSC0, VOL3 HSYNC, CSYNC, BLANK, DD0 to DD15 RAS0, RAS1, WE, OE, AA0 to AA8 pins. Conditions: DVDD2 = 5.0 V, IOL = 1.0 mA VOL4 IRQ, AD0 to AD7 pins. Conditions: DVDD1 = 3.7 V, IOL = 1.0 mA – – 0.5 V VOL5 CAS pin. Conditions: DVDD1 = 3.7 V, IOL = 1.0 mA – – 0.2 V VOL6 XPALOUT, XNTOUT pins. Conditions: DVDD1 = 3.7 V, IOL = 0.1 mA – – 0.2 V IOFF1 BV0 to BV3, GU0 to GU3, RY0 to RY3, PCK0 pins. Condition: VOUT = DVDD1 or DVSS –1 – 1 µA IOFF2 IRQ, AD0 to AD7, CAS pins Conditions: VOUT = 5.5 V or DVSS –1 – 1 µA –1 – 1 µA Output off leak current BV4 to BV7, GU4 to GU7, RY4 toRY7, FSC0, IOFF3 HSYNC, CSYNC, BLANK, DD0 to DD3 RAS0, WE, OE, AA0 to AA7 pins. Conditions: VOUT = DVDD2 or DVSS Current drain during operation IDD1 DVDD1 pin (All outputs open) – (90) mA IDD2 AVDD pin (CLKSEL = low, VCO oscillating) – (15) mA IDD3 DVDD2 pin (All outputs open) – (20) mA No. 5684-13/21 LC74201E Microcomputer Interface The microcomputer interface offers a choice of parallel or serial operation. The configuration is determined by the input levels at the AD4 to AD6 pins (pins 49 to 51) at the rising edge of the RESET pin (pin 38) input. • Parallel interface setting conditions [AD6, AD5, AD4] = [0, 1, 0]: Data read at rising edge of STB pin (pin 44) input. [AD6, AD5, AD4] = [0, 1, 1]: Data read at falling edge of STB pin (pin 44) input. [AD6, AD5, AD4] = [0, 0, 0]: Data read while STB pin (pin 44) input at high level. • Serial interface setting conditions [AD6, AD5, AD4] = [1, *, *] Notes: 1. Do not use any mode specifications other than the above. 2. A reset (RESET = low) configures the AD0 to AD7 pins (pins 45 to 52) for input. 3. The serial input mode fixes the AD2 to AD7 pins in input mode. Always treat them as input pins (by connecting them to either ground or DVDD1). If the interface is used for serial operation, the AD6 pin may be fixed at high level without any problems. 4. The RESET pin (pin 38) includes a built-in pul-up resistor. Do not apply a voltage higher than DVDD1. Timing Characteristics at Ta = +25°C, DVDD1 = 3.7 V Parameter Symbol Conditions Ratings min max Unit Data setup time TSDI0 AD6 to AD4 → RESET pin 180 – ns Data hold time THDI0 AD6 to AD4 → RESET pin 180 – ns Minimum reset pulse width TWRST RESET pin 180 – ns No. 5684-14/21 LC74201E 1. Parallel interface The parallel interface uses the following two input pins and eight I/O pins. • AS/DS pin (pin 43: input): Address/data select input. low = address; high = data. • STB pin (pin 44: input): Strobe signal input for address input and data I/O. • AD0 pin (pin 45 : I/O): Address input and data I/O AD1 pin (pin 46 : I/O): Address input and data I/O AD2 pin (pin 47 : I/O): Address input and data I/O AD3 pin (pin 48 : I/O): Address input and data I/O AD4 pin (pin 49 : I/O): Address input and data I/O AD5 pin (pin 50 : I/O): Address input and data I/O AD6 pin (pin 51 : I/O): Address input and data I/O AD7 pin (pin 52 : I/O): Address input and data I/O Note: The address cannot be read. 1-1 Address and data transfer procedures The command address is assigned to the lowest seven bits of the address. The most significant bit (AD7) is used to specify write or read. The address can only be written. It cannot be read. • Writing data Drive the AS/DS pin (pin 43) at low level to specify address input. Specify the address in the lowest seven bits. Set the top bit to 0. Drive the STB pin (pin 44) at high level to cause the LSI to read the address. The parallel interface mode can be configured to read input using a choice of three different timings. — Data read at rising edge of STB pin input. — Data read at falling edge of STB pin input. — Data read while STB pin input at high level. Drive the AS/DS pin (pin 43) at high level to specify data I/O. Drive the STB pin (pin 44) at high level to cause the LSI to read the data. No. 5684-15/21 LC74201E • Reading data Drive the AS/DS pin (pin 43) at low level to specify address input. Specify the address in the lowest seven bits. Set the top bit to 1. Drive the AS/DS pin (pin 43) at high level to specify data I/O. Drive the STB pin (pin 44) at high level to cause the LSI to write the data. 1-2 Timing characteristics at Ta = +25°C, DVDD1 = 3.7 V Parameter Minimum input pulse width Symbol Conditions Ratings min max Unit twH1 STB pin high level pulse width 180 – ns twL1 STB pin low level pulse width 180 – ns ns Strobe rising time tr1 STB pin – 50 Strobe falling time tf1 STB pin – 50 ns tsDI1 AD7 to AD0 → STB pin 25 – ns Data setup time Data hold time Single to word read/write time Data output propagation time tsDI2 AS/DS → STB pin 25 – ns thDI1 STB → AD0 to AD7 pin 25 – ns thDI2 STB → AS/DS pin 25 – ns tword AS/DS pin 200 – ns tpLH1 AD0 to AD7 data output high propagation time – 150 ns tpHL1 AD0 to AD7 data output low propagation time – 55 ns Note: AD0 to AD7 use N-channel open-drain outputs. The standard values for tpLH1 and tpHL1 are for an output load capacitance of 50 pF, an external pull to up resistor of 2.7 kΩ, and an output level of 5.0 V. No. 5684-16/21 LC74201E • Address/data write timing • Data read timing 2. Serial interface The serial interface uses the following three input pins and one output pin. • • • • CE pin (pin 43: input): Serial transfer enable signal input CL pin (pin 44: input): Serial transfer clock signal input DO pin (pin 45: input): Serial transfer data output DI pin (pin 46: input) Serial data input Data transfer is active while the CE pin is high level. Data transfer proceeds in LSB to first order. Data input is synchronized with the rising edge of the clock. Data output is synchronized with the falling edge of the clock. Notes: Do not write command or other data to the serial data input pin while the LSI is writing data. The serial data output pin is in the high impedance state during data input. 2-1 Address and data transfer procedures The command address is assigned to the lowest seven bits of the address. The most significant bit (AD7) is used to specify write or read. The address can only be written. It cannot be read. Data transfer proceeds in LSB to first order. Address input and data I/O are valid while the CE pin (pin 43) is high level. Supply the serial data input clock to the CL pin (pin 44). The LSI reads and writes data in synchronization with the rising edge of the serial clock signal. No. 5684-17/21 LC74201E • Writing data Data input is via the DI pin (pin 46). The lowest seven bits give the address. The top bit is 0. The command address is assigned to the lowest seven bits. Write the data after specifying the address. • Reading data Data output is via the DO pin (pin 45). The lowest seven bits give the address. The top bit is 0. The command address is assigned to the lowest seven bits. Read the data after specifying the address. No. 5684-18/21 LC74201E 2-2 Timing characteristics at Ta = +25°C, DVDD1 = 3.7 V Parameter Minimum input pulse width Symbol Conditions Ratings min Unit max twH2 CL pin high level pulse width 180 – ns twL2 CL pin low level pulse width 180 – ns ns Clock rising time tr3 CL pin – 50 Clock falling time tf3 CL pin – 50 ns Data setup time tsDI14 DI → CL pin 25 – ns ns Data hold time thDI14 CL → CL pin 25 – CE setup time tsCE1 CE pin 25 – ns CE hold time thCE1 CE pin 25 – ns Data read-in time tWT1 Serial data read- in time 180 – ns Data restart time tWT2 Serial transfer restart time 360 – ns Single to word write time tWRT2 DI and CL pins (1 word = 8 bits) 1.6 – µs Single to word read time tREAD2 DI and CL pins (1 word = 8 bits) Data output propagation time 1.6 – µs tPLH1 Serial data output high propagation time – 150 ns tPHL2 Serial data output low propagation time – 55 ns Note: The DO output pin uses N-channel open-drain output. The standard values for tpLH2 and tpHL2 are for an output load capacitance of 50 pF, an external pull-up resistor of 2.7 kΩ, and an output level of 5 V No. 5684-19/21 LC74201E • Serial data write timing • Serial data read timing Note: Data input is invalid during data output. No. 5684-20/21 LC74201E External DRAM Mappings 4 M bit configuration 4 M + 1 M bit configuration Functions Available with the Two External DRAM Capacities Item 4 M bits 4 M + 1 M bits PAL high to resolution still image Top and bottom 48 lines of image suppressed Full image display High to resolution still image switching Display blanked Image overwritten from top of display Video bit buffer capacity 52 kB 63.5 kB User area capacity 8 kB (4 sectors) 22 kB (11 sectors) ■ 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. ■ Anyone purchasing any products described or contained herein for an above-mentioned use shall: ➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of February, 1997. Specifications and information herein are subject to change without notice. No. 5684-21/21