ST3003 Datasheet, PDF (3/11 Pages) Sitronix Technology Co., Ltd. – Speech Decoder/Encoder

3. SIGNAL DESCRIPTIONS
ST3003
Table 3-1 Signal Function Description
Function
Group
System control
Special I/O
GPIO
External
Interrupt
Serial Port0/
DPA[4:0]
Serial Port1/
DPA[12:8]
MCU Interface
Pin Name
RESET
PWD
PWDA
OSCXI
OSXO
ECLK
Pin # I/O
1
I
1
I
1O
1
I
1O
1
I
CMODE[1:0]
2
I
TEST[2:0]
SO[1:0]/
DPA[7,15]
CLKO/
DPA[6]
DAP[13,14],
DPB[0:15]
3
I
2O
1O
18 I/O
XREQ/DPA[5] 1
I
TF0/DPA[0]
1O
RF0/DPA[1]
1
I
TX0/DPA[2]
1O
RX0/DPA[3]
1
I
SCLK0/DPA[4] 1 O
TF1/DPA[8]
1O
RF1/DPA[9]
1
I
TX1/DPA[10]
1O
RX1/DPA[11]
1
I
SCLK1/DPA[12] 1 O
D[0]/SCL
1 I/O
D[1]/SDI
1 I/O
D[2]/SDO
1 I/O
D[3:7]
5 I/O
WR
1
I
RD
1
I
CS
1
I
CMD
REQ
1
I
1O
Description
System reset, low active
Power down, low active
Power down acknowledge, high active
Crystal input or R-oscillator input. If not used, it connects to
GND
Crystal output. If not used, it connects to GND
External clock input. If not used, it connects to GND
Clock source select
01=Crystal. ECLK connects to GND
1X=ECLK. OSCXI and OSXO connect to GND
Test mode. TEST[2:0] connect to GND
SO0/DPA[7], SO1/DPA[15]
Clock output/DPA[6]
General I/O
External interrupt/DPA[5]
Transmit frame synchronization/DPA[0]
Receive frame synchronization/DPA[1]
Serial data transmit/DPA[2]
Serial data receive/DPA[3]
Serial clock/DPA[4]
Transmit frame synchronization/DPA[8]
Receive frame synchronization/DPA[9]
Serial data transmit/DPA[10]
Serial data receive/DPA[11]
Serial clock/DPA[12]
Parallel : Data bus
Serial : Serial clock
Parallel : Data bus
Serial : Serial data input
Parallel : Data bus
Serial : Serial data output
Parallel : Data bus
Serial : Not used
Parallel : Write enable, low active
Serial : Not used
Parallel : Read enable, low active
Serial : Not used
Parallel : Chip select, low active
Serial : Chip select
Parallel : Command/data select
“H”: Data
“L”: Command
Serial : Not used
DSP wants to sent command to MCU, low active
Ver 0.8
3/11
2007-06-12