Hitachi SH7760 Solution Engine2, Overview

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6.12 Electronic Volume Control
This section describes the electronic volume control functions. Table 6.12 summarizes the electronic volume
control registers. For details of each register, refer to 6.12.1 and 6.12.2.
(1) An electronic volume value can be set.
An electronic volume value can be set within a range from 0x00 (minimum sound volume) to 0xFF
(maximum sound volume).
(2) Two electronic volume values can be set.
An electronic volume value can be set for the right or left speaker.
Table 6.12 Electronic Volume Control Registers
Register Abbreviation Address R/W Size
Electronic volume data register for the right
speaker
EVRDR 0x00D0 R/W 1 byte
Electronic volume data register for the left
speaker
EVLDR 0x00D1 R/W 1 byte
6.12.1 Electronic Volume Data Register for the Right Speaker (EVRDR)
Address: 0x00D0 Initial value: 0x00
D7 D6 D5 D4 D3 D2 D1 D0
EVRDR_D7 EVRDR_D6 EVRDR_D5 EVRDR_D4 EVRDR_D3 EVRDR_D2 EVRDR_D1 EVRDR_D0
R/W R/W R/W R/W R/W R/W R/W R/W
Values from 0x00 to 0xFF can be set.
6.12.2 Electronic Volume Data Register for the Left Speaker (EVLDR)
Address: 0x00D1 Initial value: 0x00
D7 D6 D5 D4 D3 D2 D1 D0
EVLRD_D7 EVLRD_D6 EVLDR_D5 EVLDR_D4 EVLDR_D3 EVLDR_D2 EVLDR_D1 EVLDR_D0
R/W R/W R/W R/W R/W R/W R/W R/W
Values from 0x00 to 0xFF can be set.