SAA7182A Datasheet, PDF (7/45 Pages) NXP Semiconductors – Digital Video Encoder EURO-DENC2

Philips Semiconductors
Digital Video Encoder (EURO-DENC2)
Preliminary specification
SAA7182A; SAA7183A
PIN
SYMBOL
PLCC84 QFP80
DESCRIPTION
RTCI
37
27 Real Time Control input. If the LLC clock is provided by an SAA7111 or SAA7151B,
RTCI should be connected to the RTCO pin of the respective decoder to improve
the signal quality.
V_DDD5
V_SSD5
n.c.
38
68 digital supply voltage 5 (3.3 V)
39
39 digital ground 5
40
40 not connected
n.c.
41
− not connected
V_SSD6
n.c.
42
31 digital ground 6 for oscillator
43
30 not connected
XTALI
44
32 Crystal oscillator input (from crystal). If the oscillator is not used, this pin should be
connected to ground.
XTALO
45
33 Crystal oscillator output (to crystal).
V_DDD6
CREF
46
34 digital supply voltage 6 for oscillator (3.3 V)
47
35 Clock Reference signal. This is the clock qualifier for DIG-TV2 compatible signals.
LLC
48
36 Line-Locked Clock. This is the 27 MHz master clock for the encoder. The I/O
direction is set by the CDIR pin.
V_DDD7
CDIR
49
37 digital supply voltage 7 (5 V)
50
38 Clock direction. If CDIR input is HIGH, the circuit receives a clock and optional
CREF signal, otherwise if CDIR is LOW, CREF and LLC are generated by the
internal crystal oscillator.
V_SSD7
51
67 digital ground 7
V_SSA1
52
41 Analog ground 1 for the DACs.
TESTC
53
42 Analog test pin. Leave open-circuit for normal operation.
V_DDA1
BLUE
54
43 Analog supply voltage 1 for the RGB DACs (3.3 V).
55
44 Analog output of the BLUE component.
BI
56
45 Analog input that can be switched to BLUE when SELI = HIGH.
V_DDA2
57
46 Analog supply voltage 2 for RGB DACs (3.3 V).
GREEN
58
47 Analog output of GREEN component.
GI
59
48 Analog input that can be switched to GREEN when SELI = HIGH.
V_DDA3
RED
60
49 Analog supply voltage 3 for RGB DACs (3.3 V).
61
50 Analog output of RED component.
RI
62
51 Analog input that can be switched to RED when SELI = HIGH.
V_DDA4
V_DDA5
SELI
n.c.
63
52 Analog supply voltage 4 for DACs (3.3 V).
64
53 Analog supply voltage 5 for DACs (3.3 V).
65
54 Select analog input. Digital-to-analog converted RGB output when SELI = LOW;
RI, GI and BI output when SELI = HIGH.
66
− not connected
V_SSA2
67
V_DDA6
68
CHROMA 69
55 Analog ground 2 for the DACs.
56 Analog supply voltage 6 for DACs (3.3 V).
57 Analog output of the chrominance signal.
V_DDA7
70
58 Analog supply voltage 7 for the Y/C/CVBS DACs (3.3 V).
1996 Oct 02
7