Philips-DVDR-3350-H-Service-Manual(1) 电路图 维修手册.pdf
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1、Published by KC-TE 0549 AV Systems Printed in the Netherlands Subject to modifi cation EN 3139 785 31500 DVDR3350H/DVDR3360H/DVDR3370HDVD-Video Recorder CLASS 1 LASER PRODUCT Contents Page 1 Technical Specifi cations and Connection Facilities 2 2 Safety Information, General Notes however, the SYSCLK
2、 output remains active. If the LPS input remains low for more than 26 s (1280 SYSCLK cycles), the PHY-LLC interface is put into a low-power disabled state in which the SYSCLK output is also held inactive. The PHY-LLC interface is placed into the disabled state upon hardware reset. The LLC is conside
3、red active only if both the LPS input is active and the LCtrl register bit is set to 1, and is considered inactive if either the LPS input is inactive or the LCtrl register bit is cleared to 0. 48CMOSILLC request input. The LLC uses this input to initiate a service request to the TSB41AB1. Bus holde
4、r is built into this terminal. 16 17 18 CMOSIPower class programming inputs. On hardware reset, these inputs set the default value of the power class indicated during self-ID. Programming is done by tying these terminals high or low. Refer to Table 9 for encoding. NAME DGND DVDD FILTER0 FILTER1 ISO
5、LPS LREQ PC0 PC1 PC2 PD12CMOSIPower-down input. A high on this terminal turns off all internal circuitry except the cable-active monitor circuits, which control the CNA output (64-terminal PAP package only). Asserting the PD input high also activates an internal pulldown on the RESET terminal to for
6、ce a reset of the internal control logic. (PD is provided for legacy compatibility and is not recommended for power management in place of IEEE 1394a-2000 suspend/resume LPS and C/LKON features.) EN 683139 785 309818.Circuit- and IC Description TERMINAL TYPEI/ODESCRIPTION NAMEPHP NO. TYPEI/ODESCRIPT
7、ION 41SupplyPLL circuit ground terminals. These terminals should be tied together to the low-impedance circuit board ground plane. 40SupplyPLL circuit power terminals. A combination of high-frequency decoupling capacitors near each terminal is suggested, such as paralleled 0.1 F and 0.001 F. Lower f
8、requency 10 F filtering capacitors are also recommended. This supply terminal is separated from DVDD and AVDD inside the device to provide noise isolation. It should be tied at a low-impedance point on the circuit board. 33 34 BiasCurrent setting resistor terminals. These terminals are connected thr
9、ough an external resistor to set the internal operating currents and cable driver output currents. A resistance of 6.34 k 1.0% is required to meet the IEEE Std 1394-1995 output voltage limits. 37CMOSILogic reset input. Asserting this terminal low resets the internal logic. An internal pullup resisto
10、r to VDD is provided so only an external delay capacitor is required for proper power-up operation (see power-up reset in the Application Information section). The RESET terminal also incorporates an internal pulldown which is activated when the PD input is asserted high. This input is otherwise a s
11、tandard logic input, and may also be driven by an open-drain type driver. 23CMOSITest control input. This input is used in manufacturing test of the TSB41AB1. For normal use this terminal may be tied to GND through a 1-k pulldown resistor or it may be tied to GND directly. 24CMOSITest control input.
12、 This input is used in manufacturing test of the TSB41AB1. For normal use this terminal should be tied to GND. 1CMOSOSystem clock output. Provides a 49.152-MHz clock signal, synchronized with data transfers, to the LLC. 22CMOSITest control input. This input is used in manufacturing test of the TSB41
13、AB1. For normal use this terminal should be tied to VDD. 30CableI/OTwisted-pair cable A differential signal terminals. Board traces from the pair of positive and negative differential signal terminals should be kept matched and as 29CableI/O positive and negative differential signal terminals should
14、 be kept matched and as short as possible to the external load resistors and to the cable connector. 28CableI/OTwisted-pair cable B differential signal terminals. Board traces from the pair of positive and negative differential signal terminals should be kept matched and as 27CableI/O positive and n
15、egative differential signal terminals should be kept matched and as short as possible to the external load resistors and to the cable connector. 31CableI/OTwisted-pair bias output. This provides the 1.86 V nominal bias voltage needed for proper operation of the twisted-pair cable drivers and receive
16、rs, and for signaling to the remote nodes that there is an active cable connection. PLLGND PLLVDD R0 R1 RESET SE SM SYSCLK TESTM TPA+ TPA TPB+ TPB TPBIAS XI XO 42 43 CrystalCrystal oscillator inputs. These terminals connect to a 24.576-MHz parallel resonant fundamental mode crystal. The optimum valu
17、es for the external shunt capacitors are dependent on the specifications of the crystal used (see crystal selection in the Application Information section). When an external clock source is used, XI should be the input and XO should be left open, and the clock must be supplied before the device is p
18、owered on. EN 693139 785 309818.Circuit- and IC description IC7401 - 4x10bit DigitalVideo Decoder with microvision BLOCK DIAGRAM Composite and S-Video Processor Y/C Separation 5-line Adaptive Comb Luma Processing Chroma Processing ADC1 ADC2 ADC3 ADC4 M U X Component Processor CVBS/Y C Y/G Pb/B Pr/R
19、Gain/Offset Color Space Conversion C Y Output Formatter Y9:0 YCbCr VBI Data Slicer Copy Protection Detector C9:0 Host Interface Timing Processor with Sync Detector VI_1_A VI_1_B VI_1_C VI_2_A VI_2_B VI_2_C VI_3_A VI_3_B VI_3_C VI_4_A CVBS/ Y/G CVBS/ Pb/B/C CVBS/ Pr/R/C CVBS/Y CVBS/Y/G Analog Front E
20、nd Sampling Clock GPIO FSS HS/CS VS/VBLK FID AVID XTAL1 XTAL2 DATACLK RESETB GLCO DR DG DB FSO PWDN SCL SDA YCbCr Figure 8-14 PIN CONFIGURATION 22 23 C_6/GPIO/RED C_7/GPIO/GREEN C_8/GPIO/BLUE C_9/GPIO/FSO DGND DVDD Y_0 Y_1 Y_2 Y_3 Y_4 IOGND IOVDD Y_5 Y_6 Y_7 Y_8 Y_9 DGND DVDD 60 59 58 57 56 55 54 53
21、 52 51 50 49 48 47 46 45 44 43 42 41 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 VI_1_B VI_1_C CH1_A33GND CH1_A33VDD CH2_A33VDD CH2_A33GND VI_2_A VI_2_B VI_2_C CH2_A18GND CH2_A18VDD A18VDD_REF A18GND_REF CH3_A18VDD CH3_A18GND VI_3_A VI_3_B VI_3_C CH3_A33GND CH3_A33VDD 25 26 27 28 PFP PACKA
22、GE (TOP VIEW) 79 78 77 76 75807472 71 7073 29 30 31 32 33 69 68 21 67 66 65 64 34 35 36 37 38 39 40 63 62 61 VI_1_A CH1_A18GND CH1_A18VDD PLL_A18GND PLL_A18VDD XTAL2 XTAL1 VS/VBLK/GPIO HS/CS/GPIO FID/GPIO C_0/GPIO C_1/GPIO DGND DVDD C_2/GPIO C_3/GPIO C_4/GPIO C_5/GPIO IOGND IOVDD CH4_A33VDD CH4_A33G
23、ND VI_4_A CH4_A18GND CH4_A18VDD AGND DGND SCL SDA INTREQ DVDD DGND PWDN RESETB FSS/GPIO AVID/GPIO GLCO/I2CA IOVDD IOGND DATACLK Figure 8-15 EN 703139 785 309818.Circuit- and IC Description PIN DESCRIPTION TERMINAL I/ODESCRIPTION NAMENUMBER I/ODESCRIPTION Analog Video VI_1_A VI_1_B VI_1_C VI_2_A VI_2
24、_B VI_2_C VI_3_A VI_3_B VI_3_C VI_4_A 80 1 2 7 8 9 16 17 18 23 I VI_1_x: Analog video input for CVBS/Pb/B/C VI_2_x: Analog video input for CVBS/Y/G VI_3_x: Analog video input for CVBS/Pr/R/C VI_4_A: Analog video input for CVBS/Y Up to 10 composite, 4 S-video, and 2 composite or 3 component video inp
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