06 Mpu Peripheral Circuit; Mpu Peripherals For Transceiver Control; Mpu Peripherals For Application Control; Mpu Peripherals For Operation Panel Control - Kenwood TS-890S In-Depth Manual

06 MPU PERIPHERAL CIRCUIT

The MPU peripheral circuit of the TS-890S is made up of the following parts.

• MPU peripherals for transceiver control

• MPU peripherals for application control

• MPU peripherals for operation panel control

MPU Peripherals for Transceiver Control
MPU peripherals for transceiver control are made up of EEPROM for backing up the functional settings, Reset IC for
monitoring the operating power voltage, RTC IC for time management of the system, and expanded output IC for output
of control logic signals.
The key roles of the MPU peripherals for transceiver control include management of the transceiver status and
transmission/reception control.
MPU Peripherals for Application Control
MPU peripherals for application control adopt a built-in ARM Cortex-A8 MPU. It has an internal operating frequency of
600 MHz, and consists of one 8 GB eMMC external memory and two 1 GB DDR2 memories.
The key roles of the MPU peripherals for application control include display on the 7-inch monitor, output to external
monitors (DVI connector), and control related to USB devices and LAN.
MPU Peripherals for Operation Panel Control
MPU peripherals for operation panel control are made up of a touch-panel detection circuit, LED drive circuit, volume
controls, encoders and switches.
The key roles of the MPU peripherals for operation panel control include backlight brightness control, detection of
touch-panel operation, LED drive, LED brightness control, detection of volume control operation, detection of encoder
operation and detection of push switch operation.
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