Philips SACD 1000/001 Service Manual page 74

GB 118 9. SACD 1000
DSP for CD and DVD-ROM systems
SYMBOL
da1
n.c.
da0
V
DDD4
V
SSD4
WRi
RDi
ALE
CSi
STOPCLOCK
n.c.
V4
EBUOUT
SYNC
FLAG
DATA
BCLK
WCLK
V
DDD5
V
SSD5
RAMRW
n.c.
RAMDA7
RAMDA6
RAMDA5
RAMDA4
RAMDA3
RAMDA2
n.c.
RAMDA1
RAMDA0
V
DDD6
V
SSD6
RAMAD0
RAMAD1
RAMAD2
RAMAD3
RAMAD4
RAMAD5
RAMAD6
V
DDD7
Circuit-, IC descriptions and list of abbreviations
PIN TYPE
41 I/O sub-CPU data bus bit 1 input/output (parallel)
−
42 not connected, reserved
43 I/O sub-CPU data bus bit 0 input/output (parallel)
44 supply digital supply voltage 4
45 supply digital ground 4
46 I sub-CPU write enable input (active LOW)
47 I sub-CPU read enable input (active LOW)
48 I sub-CPU address latch enable input
49 I sub-CPU chip select input (active HIGH)
50 O stop clock output
−
51 not connected, reserved
52 O serial subcode output (for CD)
53 O digital audio output
2
54 O I S-bus sector sync output
2
55 O I S-bus correction ?ag output
2
56 O I S-bus serial data output
2
57 I/O I S-bus bit serial clock input/output
2
58 I/O I S-bus word clock input/output
59 supply digital supply voltage 5
60 supply digital ground 5
61 O RAM read/write control output
−
62 not connected, reserved
63 I/O RAM data bus bit 7 input/output
64 I/O RAM data bus bit 6 input/output
65 I/O RAM data bus bit 5 input/output
66 I/O RAM data bus bit 4 input/output
67 I/O RAM data bus bit 3 input/output
68 I/O RAM data bus bit 2 input/output
−
69 not connected, reserved
70 I/O RAM data bus bit 1 input/output
71 I/O RAM data bus bit 0 input/output
72 supply digital supply voltage 6
73 supply digital ground 6
74 O RAM address bit 0 output
75 O RAM address bit 1 output
76 O RAM address bit 2 output
77 O RAM address bit 3 output
78 O RAM address bit 4 output
79 O RAM address bit 5 output
80 O RAM address bit 6 output
81 supply digital supply voltage 7
SAA7335
DESCRIPTION