YSS943 YAMAHA [YAMAHA CORPORATION], YSS943 Datasheet - Page 8

• Manufacturer Part Number: YSS943
• Description: ADAMB Advanced Digital Audio Multi channel decode processor
• Manufacturer: YAMAHA [YAMAHA CORPORATION]

Note 1) I/O symbols
• I:
• Is:
• O:
• Ot:
• I/O:
• I(+)/O: Pull-up during input, no pull-up during output
Note 2) Example of circuit connected to crystal oscillator
* The above resistor and capacitor vary depending on the crystal oscillator. Be sure to comply with the specifications of the
8
General-purpose
I/O ports
General-purpose
I/O ports
Test
XI
crystal oscillator used.
12.288 MHz
Type
Input
Schmitt trigger input
Output
Tri-state output
I/O
XO
135
133
116
115
114
113
132
No.
Pin
13
12
11
10
57
56
55
54
53
52
47
46
16
17
24
25
ZEROFLG
STATUS7
STATUS6
STATUS5
STATUS4
STATUS3
STATUS2
STATUS1
STATUS0
IOPORT7
IOPORT6
IOPORT5
IOPORT4
IOPORT3
IOPORT2
IOPORT1
IOPORT0
Pin Name
nMUTE
TEST
Note 1)
I(+)/O
I(+)/O
I/O
O
O
O
Is
This is the output pin during auto mute periods.
This is the consecutive zero data input detection pin.
These are status output pins 7 to 0.
They are used to confirm firmware operations.
Normally, they should be left unconnected.
These are general I/O port pins 7 to 0.
Their I/O status can be set via register settings.
These are general I/O port pins 7 to 0.
Their I/O status can be set via register settings.
Test pins
Connect these pins to a ground.
YSS944/943/940
Function