27
DSP-A595a
IC4 : YSS918D-F (AC3D2av)
DSP + AC-3 (Digital Dolby)/Pro Logic/DTS Digital Surround Decoder
No.
Name
I/O
Function
1
VDD1
+5V power supply
2
RAMCEN
O
RAM chip enable output terminal (normally unconnected)
3
RAMA16
O
RAM address output terminal 16, connected to external 1M SRAM address
4
RAMA15
O
RAM address output terminal 15, connected to external 1M SRAM address
5
SDIB0
I
Serial data input B terminal 0 (normally connected to ground)
6
SDIB1
I
Serial data input B terminal 1 (normally connected to ground)
7
SDIB2
I
Serial data input B terminal 2 (normally connected to ground)
8
XI
I
I
Crystal oscillator connection external clock input terminal
9
XO
O
Crystal oscillator connection (normally unconnected)
10
VSS
Ground
11
AVDD
+3V power supply
12
SDIB3
Serial data input B terminal 3 (normally unconnected)
13
TEST
Test terminal (normally unconnected)
14
TEST
Test terminal (normally unconnected)
15
OVFB
O
O
O
O
Overflow detect terminal (normally unconnected)
16
DTSDATA
DTS data detect terminal (normally unconnected)
17
AC3DATA
AC-3 data detect terminal (normally unconnected)
18
SDOB3
Serial data output B terminal 3 (normally unconnected)
19
CPO
O
PLL output terminal (connected to AVSS through external analog filter)
20
AVSS
Ground
21
VDD
+3V power supply
22
SDOA2
O
Serial data output A terminal 2 (normally unconnected)
23
SDOA1
O
Serial data output A terminal 1 (normally unconnected)
24
SDOA0
O
Serial data output A terminal 0, PCM output terminal (AC-3/PRO LOGIC/DTS: L/R output)
25
RAMA14
O
RAM address terminal 14 output terminal, connected to external 1M SRAM address
26
RAMA13
O
RAM address terminal 13 output terminal, connected to external 1M SRAM address
27
RAMA12
O
RAM address terminal 12 output terminal, connected to external 1M SRAM address
28
RAMA11
O
RAM address terminal 11 output terminal, connected to external 1M SRAM address
29
RAMA10
O
RAM address terminal 10 output terminal, connected to external 1M SRAM address
30
VSS
Ground
31
VDD1
+5V power supply
32
OPORT0
O
Output port terminal 0, dolby pro logic signal output
33
OPORT1
O
Output port terminal 1, (normally unconnected)
34
OPORT2
O
Output port terminal 2, (normally unconnected)
35
OPORT3
O
Output port terminal 3, (normally unconnected)
36
OPORT4
O
Output port terminal 4, (normally unconnected)
37
OPORT5
O
Output port terminal 5, (normally unconnected)
38
OPORT6
O
Output port terminal 6, (normally unconnected)
39
OPORT7
O
Output port terminal 7, (normally unconnected)
40
VSS
Ground
41
VDD2
+3V power supply
42
RAMA9
O
RAM address output terminal 9 , connected to external 1M SRAM address
43
RAMA8
O
RAM address output terminal 8 , connected to external 1M SRAM address
44
RAMA7
O
RAM address output terminal 7 , connected to external 1M SRAM address
45
SDOB2
O
Serial data output B terminal 2, PCM output
46
SDOB1
O
Serial data output B terminal 1, PCM output
47
SDOB0
O
Serial data output B terminal 0, PCM output
48
SDBCK1
I
Serial data bit clock input terminal 1
49
SDWCK1
I
Serial data word clock input terminal 1
50
VSS
Ground
