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Descriptions
IC7407
DSP56011: 24-bit DVD Digital Signal Processor
Function Overview
The DSP56011 is a high-performance programmable Digital Signal
Processor (DSP) developed for Digital Versatile Disc (DVD), High-
Definition Television (HDTV), and Advanced Set-top audio decoding.
It is composed of the 24-bit DSP56000 core, memory, and a set of
peripheral modules.
The following peripheral modules are included on the DSP56011:
– Parallel Host Interface: not used in this application.
– Serial Host Interface: connected to the I
– Serial Audio Interface: provides a synchronous serial interface
allowing the DSP56011 to communicate using a wide range of
standard serial data formats used by audio manufacturers.
– Digital Audio Transmitter: outputs digital audio data in AES/EBU,
CP-340, and IEC958 formats.
– General-Purpose Input/Output: has eight dedicated signal lines that
can be independently programmed to be inputs, standard TTL
outputs, open collector outputs, or disconnected.
The 24-bit DSP56000 core is composed of a data Arithmetic and Logic
Unit, an address generation unit, a program controller, and the busses
that connect them together. An On-chip Emulation port and a Phase-
Lock Loop are integral parts of this processor.
NC1
1
NC2
2
DATA ALU
Y DATA
X DATA
NC3
4
MEMORY
MEMORY
5
NC4
32
NC5
33
NC6
34
NC7
24x24+56
71
NC8
56-BIT MAC
72
NC9
73
NC10
TWO 56-BIT
ACCUMUL.
NC11
74
NC12
89
NC13
90
NC14
92
94
NC15
95
NC16
97
NC17
PROGRAM
98
NC18
ADDRESS
99
NC19
GENERATOR
PROGRAM
DECODE
CONTROL
47
MODA/IRQAN
48
MODB/IRQBN
MODC/NMIN
49
RESETN
46
PROGRAM
INTERRUPT
CONTROL
70
DSCK/OS1
INTERNAL
69
DSI/OS0
TM
ONCE
DATA
68
DSO
PORT
BUS
75
DRN
SWITCH
CLOCK
EXTAL
42
GENERATOR
DSP56011
PLOCK
35
DSP
PCAP
40
PLL
38
PINIT
2 - 22
2
C-bus
DIGITAL
AD0
AUDIO
PROGRAM
ACI
MEMORY
TRANSMITTER
MOSI/HA0
SSN/HA2
SERIAL
MISO/SDA
HOST
SCK/SCL
INTERFACE
HREQ
WSR
SCKR
SDI0
SERIAL
SDI1
ADDRESS
AUDIO
WST
GENERATION
INTERFACE
SCKT
UNIT
SDO0
SDO1
SDO2
GPIO0
GPIO1
GPIO2
GENERAL
GPIO3
PURPOSE
GPIO4
I/O
GPIO5
GPIO6
GPIO7
H0/PB0
H1/PB1
H2/PB2
H3/PB3
H4/PB4
H5/PB5
PARALLEL
H6/PB6
HOST
H7/PB7
7407
INTERFACE
HOA0/PB8
HOA1/PB9
HOA2/PB10
HR/WN/PB11
HENN/PB12
HOREQN/PB13
HACKN/PB14
Only signals used in this application will be described
Pin
Name
Function
VCC
Power supply +5V
GND
Ground
16
HACKN
Host acknowledge: pulled high when it is not in use
27
HOREQN
Host request: pulled high when it is not in use
30
ADO
Audio Data Output
31
ACI
Audio transmitter clock input
38
PINITN
PLL initialization
40
PCAP
PLL filter capacitor
42
EXTAL
external clock/crystal
2
43
SCL
I
C serial data and acknowledge
45
SDA
I
2
C serial clock
46
RESETN
direct hardware reset of the processor
47
MODA
48
MODB
49
MODC
mode select: to select the DSP's initial operating mode
57
SDO0
Serial data output 0
59
SCKT
Transmit serial clock
60
WST
Transmit word select
61
SCKR
Receive serial clock
65
WSR
Receive word select
66
SDI1
serial data input 1
68
DSO
debug serial output
69
DSI
debug serial input: pulled down if the OnCE port is in use
70
DSCK
debug serial clock: pulled down if the OnCE port is in use
75
DRN
debug request: pulled up if the OnCE port is not in use
30
76,79,80 GPIO7
31
GPIO5
general purpose I/O used for control and handshake
51
GPIO4
functions between DSP and external circuitry
52
45
43
53
65
61
67
66
60
59
57
56
55
86
85
83
82
80
79
77
76
26
25
24
22
21
19
7
6
18
11
9
12
13
27
16
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