SNC710
16-bit Voice Engine
3. PIN ASSIGNMENTS
Symbol I/O
Function Description
P0.0~P0.15 I/O I/O Port 0
P1.0~P1.7
I Input Port 1
VDD
I Positive power supply for digital I/O pad
GND
I Negative power supply for digital I/O pad &core
CVDD
I Positive power supply for DSP core & AD bus interface
BP0
O PWM output 1
BN0
O PWM output 2
VO0
O DA0 converter output
XIN/VR1
I High clock crystal input /RC oscillator input
XOUT/VR2 I/O High clock crystal output/RC oscillator input
LXIN
I Low clock oscillator input
LXOUT
O Low clock oscillator output
CKSEL
I Crystal/RC oscillator system clock select
ALECLK
O System Clock output
CEB
O External ROM Enable , active low
READY
I/O Data Ready(I)/ Reset(O)
CLKIN
I Bus system clock in
CEIN
I External ROM enable in
AD[0..7]
I/O ROM Address/Data Bus (AD Bus)
RST
I Chip reset (active low)
TestM
I TEST pin
EXTM
I External ROM Share Mode
Ver. 1.3
4
April 3, 2003