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22 HW Processor (HWP) and Sound Output (SDAC2)
Error Status Register
Register name
Bit
ERROR
15–0 ERROR[15:0]
Bits 15–0 ERROR[15:0]
These bits indicate the error that has occurred while the HWP is running. For the errors that may oc-
cur in the Sound Play function, refer to Table 22.4.1.2.
Operating Status Register
Register name
Bit
STATUS
15–9 –
(Sound Play)
8
7–1 –
0
Bits 15–9 Reserved
Bit 8
SOUNDOUT
This bit indicates whether the HWP is performing playback output or not.
1 (R):
During playback (sp_state_play, sp_state_mute)
0 (R):
Stop (sp_state_init, sp_state_idle, sp_state_pause)
Bits 7–1
Reserved
Bit 0
READY
This bit indicates the HWP operating status (whether a command is acceptable or not).
1 (R):
Ready (Command is acceptable.)
0 (R):
Busy (Command is not acceptable.)
Version Number Register
Register name
Bit
VERSION
15–8 MAJOR[7:0]
7–0 MINOR[7:0]
Bits 15–8 MAJOR[7:0]
Bits 7–0
MINOR[7:0]
These bits indicate the HWP version number.
Version number = MAJOR[7:0] . MINOR[7:0]
22-24
Table 22.6.1.11 State Monitor
STATE_n.STATE[15:0] bits
0x0004
0x0003
0x0002
0x0001
0x0000
Bit name
Initial
Bit name
Initial
SOUNDOUT
READY
Bit name
Initial
Seiko Epson Corporation
State
sp_state_mute
sp_state_pause
sp_state_play
sp_state_idle
sp_state_init
Reset
R/W
x
–
R
–
Reset
R/W
x
–
R
–
x
–
R
x
–
R
x
–
R
Reset
R/W
x
–
R
–
x
–
R
Remarks
Remarks
Remarks
S1C31D41 TECHNICAL MANUAL
(Rev. 1.1)
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