SAA3323 Просмотр технического описания (PDF) - Philips Electronics
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Компоненты Описание
производитель
SAA3323 Datasheet PDF : 56 Pages
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Philips Semiconductors
Drive processor for DCC systems
Preliminary specification
SAA3323
SYMBOL
A4
VSS3
VDD3
A5
A6
A7
A12/PINO5
A14/PINO1
A16/PINO3
A15/PINO4
WEN
A13/PINO2
A8
VDD4
VSS4
A9/CAS
A11
SPEED
PINO2
WDATA
TCLOCK
VSS5
VDD5
TEST2
RDMUX
Vref(p)
Vref(n)
SUBSTR
BIAS
VSSA
VDDA
ANAEYE
RDSYNC
VDD6
VSS6
CHTST1
CHTST2
TEST0
TEST1
PIN
QFP80 TQFP80
DESCRIPTION
TYPE(1)
39
37 address SRAM; address DRAM
O (2 mA)
40
38 digital ground
S
41
39 digital supply voltage
S
42
40 address SRAM; address DRAM
O (2 mA)
43
41 address SRAM; address DRAM
O (2 mA)
44
42 address SRAM; address DRAM
O (2 mA)
45
43 address SRAM; Port expander output 5
O (2 mA)
46
44 address SRAM; Port expander output 1
O (2 mA)
47
45 address SRAM; Port expander output 3
O (2 mA)
48
46 address SRAM; Port expander output 4
O (2 mA)
49
47 write enable for RAM
O (2 mA)
50
48 address SRAM; Port expander output 2
O (2 mA)
51
49 address SRAM; address DRAM
O (2 mA)
52
50 digital supply voltage
S
53
51 digital ground
S
54
52 address SRAM; CAS for DRAM
O (2 mA)
55
53 address SRAM
O (2 mA)
56
54 Pulse Width Modulation (PWM) capstan control output for deck Ot (1 mA)
57
55 Port expander output 2
Ot (1 mA)
58
56 serial output to write amplifier
O (1 mA)
59
57 3.072 MHz clock output for tape I/O
O (1 mA)
60
58 digital ground
S
61
59 digital supply voltage
S
62
60 TEST mode select; do not connect
Ipd
63
61 analog multiplexed input from read amplifier
IA
64
62 ADC positive reference voltage
IA
65
63 ADC negative reference voltage
IA
66
64 substrate connection
IA
67
65 bias current for ADC
IA
68
66 analog ground
S
69
67 analog supply voltage
S
70
68 analog eye pattern output
71
69 synchronization output for read amplifier
OA
O (1 mA)
72
70 digital supply voltage
S
73
71 digital ground
S
74
72 channel test pin 1
O (1 mA)
75
73 channel test pin 2
O (1 mA)
76
74 TEST mode select; do not connect
Ipd
77
75 TEST mode select; do not connect
Ipd
May 1994
5
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