Samsung MM-18 Service Manual page 53

mm18(10) 3/23/98 4:17 PM
Block Diagrams
9-6 Digital Signal Processor(KS9286) : NIC9286
No.
1
2
3
4 DPFOUT
5 CNTVOL
6
7
8
9
10 WDCHO
11
12 ADATAO
13
14
15
16 VREFL2
17 VREFL1
18
19 RCHOUT
20 LCHOUT
21
22 VREFH1
23 VREFH2
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
9-14
Page 9-14
Port Port
AVDD1 - Analog VCC1
DPDO O Charge pump output for Digital PLL
DPFIN I Filter input for Digital PLL
O Filter output for Digital PLL
I VCO control voltage for Digital PLL
AVSS1 - Analog Ground1
DATX O Digital Audio output data
XIN I X'tal oscillator input
XOUT O X'tal oscillator output
O Word clock output of 48 bit/Slot (88.2KHz)
LRCHO O Channel clock output of 48 bit/Slot (44.1KHz), 88.2KHz when ESP ON
O Serial audio data output of 48 bit/Slot (MSB first), double speed output
when ESP ON
DVSS1 - Digital Ground1
BCKO O Audio data bit clock output of 48 bit/Slot(2.1168MHz), 4.2336MHz when
ESP ON
C2PO O C2 Pointer for output audio data
I Input terminal2 of reference voltage "L"(Floating)
I Input terminal2 of reference voltage "L"(GND connection
AVDD2 - Analog VCC2
O Right-Channel audio output through D/A converter
O Left-Channel audio output through D/A converter
AVSS2 - Analog ground2
I Input terminal1 of reference voltage "H" (VDD connection)
I Input terminal2 of reference voltage "H" (Floating)
EMPH O Emphasis/Non-Emphasis output, H: Emphasis ON, L: Emphasis OFF
LKFS O The Lock Status output of frame sync
S0S1 O Output of subcode sync signal(S0+S1)
RESET I System reset at "L"
/ESP I ESP function ON/OFF control("L": ESP function ON, "H": ESP function
OFF)
SQCK I Clock for output Subcode-Q data
SQDT O Serial output of Subcode-Q data
SQOK O The CRC (Cycle Redundancy Check) check result signal output of
Subcode-Q)
SBCK I Clock for output subcode data
SDAT O Subcode serial data output
DVDD1 - Digital VDD1
MUTE I Mute control input ("H": Mute ON)
MLT I Latch Signal input from Micom (Schmit Trigger)
MDAT I Latch Signal input from Micom (Schmit Trigger)
MCK I Latch Signal input from Micom (Schmit Trigger)
DB8 I/O SRAM data I/O port8 (MSB)
DB7 I/O SRAM data I/O port7
Description
Samsung Electronics