SN66021 Datasheet, PDF (2/5 Pages) SONiX Technology Company – 4-Channel Speech Controller

SN66021
4-Channel Speech Controller
„ PIN ASSIGNMENT
Symbol
P10
P11
P12
P13
P20
P21
P22
P23
P30
P31
P32
P33
P40
P41
P42
P43
V_DD
GND
I/O Function Description
I Bit0 of input port 1
I Bit1 of input port 1
I Bit2 of input port 1
I Bit3 of input port 1
I/O Bit0 of I/O port 2
I/O Bit1 of I/O port 2
I/O Bit2 of I/O port 2
I/O Bit3 of I/O port 2
I/O Bit0 of I/O port 3
I/O Bit1 of I/O port 3
I/O Bit2 of I/O port 3
I/O Bit3 of I/O port 3
O Bit0 of output port 4
O Bit1 of output port 4
O Bit2 of output port 4
O Bit3 of output port 4
I Positive power supply
I Negative power supply
OSC/XIN I Oscillator / Crystal In
XOUT O Crystal Out
CKSEL I Clock type select
‘L’ → RC oscillator
‘H’ →Crystal
VO1
(Internal pull low)
O D/A current output, for channel 1 and 2
VO2 O D/A current output, for channel 3 and 4
2
March 8, 2001