ARCAM Arcam-DV-88-Service-Manual free download

File name Arcam-DV-88-Service-Manual.pdf

Service Manual DV88 Issue 2.0 DiVA DV88 DVD Player + Progressive Scan ARCAM Contents List ! Contents list ! Circuit description ! Frequently asked questions issue 1 ! Software release notes 1.1 to 1.76 ! Progressive scan upgrade instructions ! Service guide ! Circuit diagrams ! Component overlays ! Circuit board parts list ! General assembly parts list CN5 is the audio connector to the AV board. Digital audio Circuit Descriptions in I2S and SPDIF formats are passed to the AV board from here, as well as a number of control signals: FSEL0..1 Selects 1 of 4 audio clock frequencies MD, MC, ML8716_L, ML_8716_R, ML_8716_X 5 wire SPI bus to configure audio DACs L875 DSP Circuit GAIN_SCALING HDCD gain scaling signal. The audio master clock also comes on to the board here. It Summary is generated on the AV board and fed to the DSP board to This board is used in the DV88 and DV27 DVD players. It synchronise the audio, of which more later. can be considered to be the central digital core of the CN2 and CN3 are not fitted. They are the AV and host player, and is based around the Zoran Vaddis III DVD interface for the AV type drive that the system was decoder IC. A Siemens C161 microcontroller is used as originally designed to use. the system CPU and software runs on this which controls the whole system. A video DAC is also present, as well as Sheet 2 - CPU an ATAPI bridge device. The system CPU, U3, is a Siemens C161 16 bit ROM-less The board interfaces with the display board, the DVD microcontroller running at 16MHz. drive, and the AV board. ROM and RAM are external to the micro, so we have a CPU bus with 19 bits of address and 16 bits of data. Overview The ROM memory is provided by U4 and U5 which The heart of the system is the Zoran Vaddis III IC, which contain the lower and upper 8 bits of program memory receives a data stream on its AV interface. The chip has 2 respectively. These are 28SF040 4Mbit (512K x 8) separate DSPs, one for audio and one for video. The FLASH EEPROMs. These must be programmed