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22 HW Processor (HWP) and Sound Output (SDAC2)
HWP
HWPIE
CPU
HWP0TRG
HWPEN
SDAC2
Clock generator
CLKSRC[1:0]
CLKDIV[1:0]
DBRUN
SDACEN
ER1IE
DATREQ1IE
ER0IE
DATREQ0IE
Notes: • In addition to the control registers in the MCU peripheral circuit area, the HWP has HWP in-
ternal registers (address 0x00156700 to address 0x0015674c) that are used for specifying
the function and command to be executed and monitoring the operation state. These internal
registers are switched between the Sound Play function registers and the Memory Check
function registers according to the selected function.
In this chapter, the register names that begin with HWP or SDAC2 represent a control register
in the MCU peripheral circuit area, other names represent a HWP internal register.
• For the specifications of sound data and the setting of the external Flash memory for storing
sound data, refer to the application note or the sample software manual.
22.2 Output Pins and External Connections
22.2.1 List of Output Pins
Table 22.2.1.1 lists the SDAC2 output pins.
Initial
Pin name
I/O
status*
SDACOUT_P
O
O (L)
SDACOUT_N
O
O (L)
SDACOUT_P2 O
O (L)
SDACOUT_N2 O
O (L)
22-2
HWP1IF
HWP0IF
Interrupt control circuit
RAM
(18KB)
HWP internal registers
Command control
circuit
PWMOUTEN
PWMMODE[1:0]
RESAMPEN
RESAMPRATE[10:0]
TONEON
TONEDIV[15:0]
ERR1IF
Interrupt control circuit
DATREQ1IF
ERR0IF
DATREQ0IF
Figure 22.1.1 HWP Configuration
Table 22.2.1.1 SDAC2 Output Pins
SDAC2 positive sound signal output (common to two-pin and four-pin output mode)
SDAC2 negative sound signal output (common to two-pin and four-pin output mode)
SDAC2 positive sound signal 2 output (dedicated for four-pin output mode)
SDAC2 negative sound signal 2 output (dedicated for four-pin output mode)
* Indicates the status when the pin is configured for SDAC2.
Seiko Epson Corporation
Memory check circuit
Sound decoder
Sound buffer
DAT[9:0]
Sound signal
generator
Tone signal
generator
Function
S1C31D41 TECHNICAL MANUAL
Embedded
Flash memory,
RAM
Quad
External
synchronous
Flash
serial interface
memory
SDACOUT_P2
SDACOUT_P
SDACOUT_N
SDACOUT_N2
(Rev. 1.1)
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