25
DSP-A5
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 or external clock input terminal, connected to external DIR5 master clock output
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 connected to external ADC serial data input
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 expansion port terminal 0, digital input selector A output (DIA *)
33
OPORT1
O
Output expansion port terminal 1, digital input selector B output (DIB *)
34
OPORT2
O
Output expansion port terminal 2 (normally unconnected)
Output expansion port terminal 3, compulsive analog performance mode (KM1) output
Output expansion port terminal 4, connected to external CODEC initial clear input
Output expansion port terminal 5, PRO LOGIC decode output (H:PRO LOGIC decode)
Output expansion port terminal 6 (normally unconnected)
Output expansion port terminal 7 (normally unconnected)
RAM address output terminal 9, connected to external 1M SRAM address
RAM address output terminal 8, connected to external 1M SRAM address
RAM address output terminal 7, connected to external 1M SRAM address
Serial data output B terminal 2, connected to external CODEC PCM audio data output
46
SDOB1
O
Serial data output B terminal 1, connected to external CODEC PCM audio data output
47
SDOB0
O
Serial data output B terminal 0, connected to external CODEC PCM audio data output
48
SDBCK1
I
Serial data bit clock input terminal 1, connected to external DIR5 64fs bit clock output
49
SDWCK1
* Digital Input
Selector Control
(H=1, L=0)
Digital Input DIB
(Pin33)
DIA
(Pin32)
NONE
0
0
DVD/LD
0
1
CBL/SAT
1
0
D-TV
1
1
I
Serial data word clock input terminal 1, connected to external DIR5 1fs word clock output
50
VSS
Ground
IC4 : YSS918D-F (AC3D2av)
DSP + AC-3(Dolby Digital)/ Pro Logic/ DTS Digital Surround Decoder
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7
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