YSS950 Datasheet, PDF (7/30 Pages) YAMAHA CORPORATION – DAP1 Digital Audio Processor

YSS950



























■ Pin Function List
Type
Pin
No.
Serial
50
peripheral
51
interface (SPI) 52
53
Serial data
29
interface
30
31
18
19
20
21
22
23
27
28
36
35
34
47
46
45
44
43
42
38
37
Status
54
58
General-purpose 10
I/O ports
11
12
13
System
59
7
8
Test
5
6
14
15
60
Pin Name
/CS
SCK
SI
SO
SDIMCK
SDIBCK
SDIWCK
SDI0
SDI1
SDI2
SDI3
SDI4
SDI5
SDI6
SDI7
SDOMCK
SDOBCK
SDOWCK
SDO0
SDO1
SDO2
SDO3
SDO4
SDO5
SDO6
SDO7
/INT
/MUTE
GPIO0
GPIO1
GPIO2
GPIO3
/RST
XI
XO
TEST0
TEST1
TEST2
TEST3
TEST4
I/O
Function
Note 1)
Is
SPI chip select input
Is
SPI clock input
I
SPI address/data input
Ot
SPI data output
Connect this pin to a pull-up resistor.
Is
Master clock input
Is
Bit clock input for serial data input
I
Word clock input for serial data input
I
Serial data input
Connect unused pins to a ground.
Ot
Master clock output
Is/O Bit clock I/O for serial data output
Input during slave mode and output during master mode.
I/O Word clock I/O for serial data output
Input during slave mode and output during master mode.
O
Serial data output
Connect unused pins to a ground.
O
Interrupt report output
O
Auto mute report output
I+/O General-purpose I/O ports
Register settings are used to switch between input and output mode.
Pull-up during input, no pull-up during output.
Connect unused pins to a ground.
Is
Hardware reset input
This LSI is initialized when at low level.
I
Clock input
Connect this pin to a 12.288 MHz crystal oscillator, such as in the part of
the circuit example indicated by Note 2. If a crystal oscillator has not
been connected, input a 12.288 MHz clock to the XI pin.
O
Clock output
Connect as shown by Note 2 in the circuit example.
If inputting a clock directly to the XI pin (without connecting a crystal
oscillator), do not connect anything to the XO pin.
Do not use the XO pin for any purpose other than clock oscillation.
Is
Test input
Connect to a ground.
7