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22 HW Processor (HWP) and Sound Output (SDAC2)
In case of external QSPI-Flash:
0x00 0000 + OFFSET
0x10 0000 + OFFSET
0x20 0000 + OFFSET
...
0xe0 0000 + OFFSET
0xf0 0000 + OFFSET
* The OFFSET is 0x04 0000, the start address of the memory mapped access area for external Flash
memory (refer to "Figure 4.1.1 Memory Map").
ROM Size Register
Register name
Bit
ROMSIZE
31–0 SIZE[31:0]
(Sound Play)
Bits 31–0 ADDRESS[31:0]
These bits specify the sound data ROM size in bytes.
The following shows the maximum size that can be specified.
In case of internal Flash:
0x03 0000 bytes (192K bytes) or less
In case of external QSPI-Flash:
0x100 0000 bytes (16M bytes) or less
Key Code Register
Register name
Bit
KEYCODE
31–0 KEYCODE[31:0]
(Sound Play)
Bits 31–0 KEYCODE[31:0]
These bits specify the key code.
Write the key code provided by Seiko Epson.
Ch.n Command Register
Register name
Bit
COMMAND_n
15–8 OPTION[7:0]
(Sound Play)
7–0 COMMAND[7:0]
Bits 15–8 OPTION[7:0]
These bits select a command option (gapless play/silent period insertion).
COMMAND_n.
OPTION[7:0] bits
0xff–0x02
Notes: • During 2-channel mix output with Ch.0 and Ch.1, gapless play cannot be performed
(gapless play is disabled for both channels).
• Depending on the contents of the sentence to play, the played voice may be difficult to
hear even if gapless play is enabled. Conduct sufficient evaluation when using the gapless
play function.
22-20
Bit name
Initial
x
Bit name
Initial
x
Bit name
Initial
x
x
Table 22.6.1.2 Command Option Selection
Setting prohibited (error)
0x01
Gapless play enable
Sound will be played without a silent period inserted
(gap = 0 ms) between phrases.
0x00
Gapless play disable
Sound will be played with about 100 ms of a silent
period (gap) inserted between phrases.
Seiko Epson Corporation
Reset
R/W
–
R/W
–
Reset
R/W
–
R/W
–
Reset
R/W
–
R/W
–
–
R/W
Command Option
Remarks
Remarks
Remarks
S1C31D41 TECHNICAL MANUAL
(Rev. 1.1)
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