System Control Block - Sony PXW-X500 Service Manual

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System Control Block

DPR-362 Board
The DPR-362 board mounts a application processor EMMA (IC4200) that incorporates ARM core.
The 4GB eMMC (IC4400) that contains execution programs, the DDR2 SDRAM (IC4300, IC4301) for work memory,
and the EEPROM (IC4602) for storing parameters are connected to the application processor EMMA (IC4200) as its
peripheral ICs.
The application processor EMMA (IC4200) performs system control through communication between the following
processors.
• Parallel communication connection to the video signal processor ROSETTA (IC0100)
• Serial communication connection to the media processor DIABLO (IC2900)
• Serial communication connection to the power controller Darwin (IC5002)
• Serial communication connection to the VF controller VF VINE (IC4903)
• Serial communication connection to the key controller KEY VINE (IC302/FP208 board), EX VINE (IC404/FP-208
board), and JKLX (IC503/FP-208 board)
Main Functions of the System Controller and Peripheral Devices
Reading key information
Information of the keys on the inside panel is sent to the KEY VINE (IC302), EX VINE (IC404), and JKLX (IC503)
on the FP-208 board.
Information of the keys on the rear panel is sent through the MB-1210 board to the AUDX (IC801) on the AU-360
board.
Information of the keys on the front panel and on the handle is sent through the MB-1210 board to the VF VINE (IC4903)
on the DPR-362 board.
The information of the REC S/S key on the front panel is also sent to the ROSETTA (IC0100) on the DPR-362 board
to be used for Power On Rec.
Information of the keys on the top panel is sent through the MB-1210 board to the JKLX (IC503) on the FP-208 board.
SD card control (for SETUP)
The EMMA (IC4200) reads and writes SD card data through the SD card slot (CN7) on the MB-1210 board.
This SD card slot is also used for upgrading the main unit.
Power control
When power is connected, the boot signal is transferred from the RE-326 board to the power controller Darwin (IC5002)
on the DPR-362 board through the MB-1210 board.
After that, the Power Save reset signal is transferred from the Darwin (IC5002) to the RE-326 board through the MB-1210
board. At the same time, information of the power switch connected through the MB-1210 board is monitored.
When the power switch is turned on, the Darwin (IC5002) controls system reset in accordance with the boot sequence.
The Darwin (IC5002) also monitors voltages in the boot process.
This Darwin (IC5002) is backed up by the lithium button battery on the FP-208 board.
700P IF
The EMMA (IC4200) is connected to the GMON (IC2301) through the serial bus to perform data communication with
the 700p IF and control it.
The 700p IF has two channels: one is connected to the connector (CN2) on the RM-246 board through the MB-1210
board, and the other is connected to the 50-pin interface connector (CN4) on the CI-50 board through the HPR-53 board.
WM (WIFI MODULE) control
The EMMA (IC4200) is connected to the WM through the fine-wire coaxial connector (CN2303) to control
communication.
When media data is transferred, IC4500 is controlled to disconnect the maintenance USB and connect it to the media
processor DIABLO (IC2900) through the USB host controller (IC3300) for Diablo.
PXW-X500
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