Teac DV-H500, Service Manual

Page: 14 / 58

2-14
IC BLOCK DIAGRAMS & PIN DESCRIPTION
1. IC25 (STi5505 DVD BACKEND-DECODER)
PIN DESCRIPTION
Pin Name Type Function
SUPPLIES
1, 18, 34, 67, 75, 86, 95,
102, 110, 119, 130, 139,
149, 159, 171, 184, 208
V
DD
Power Supply (3.3 V)
4, 19, 35, 68, 77, 87, 96,
103, 111, 120, 131, 140,
150, 160, 172, 185, 200
GND Ground
53, 60 V
DDA
Analog Power Supply for DENC D/A Converters (3.3 V)
54, 61 V
SSA
Analog Ground for DENC D/A Converters
48 V
DDA_PCM
Analog Power Supply for PLL PCM (3.3 V)
49 V_REF_PCM Analog Reference for PLL PCM (3.3 V)
50 V
SSA_PCM
Analog Ground for PLL PCM
FRONT-END INTERFACE
36 B_DATA I I
2
S Data (DVD) or PARA_DATA[2] (DVD//) or Link Data
(DVB/DSS)
40 B_WCLK I/O I
2
S Word Clock or NRSS_CLK (DVB/DSS)
37 B_BCLK I I
2
S Bit Clock (DVD) or PARA_DATA[3] (DVD//) or Link
Bit Clock (DVB/DSS)
38 B_FLAG I Error Flag (DVD) or PARA_DATA [4] (DVD//) or Link
Sync (DVB/DSS)
39 B_SYNC I Sector / Abs Time Sync (DVD) or PARA_DATA[5]
(DVD//) or Link Not Valid (DVB/DSS)
42 B_V4 I Versatile Input Pin (Subcode Input) or NRSS_IN
(DVB/DSS)
VIDEO OUTPUT INTERFACE
57 R_OUT O Red Output
56 G_OUT O Green Output
55 B_OUT O Blue Output
63 C_OUT O Chroma Output
64 CV_OUT O Composite Video Output
62 Y_OUT O Luma Output
59 I_REF_DAC_RGB I DAC Current Reference
66 I_REF_DAC_YCC I DAC Current Reference
58 V_REF_DAC_RGB I DAC Voltage Reference
65 V_REF_DAC_YCC I DAC Voltage Reference
117 OSD_ACTIVE I/O OSD Active
118 PIXCLK_27MHz I System Clock Input
51
HSYNC
I/O Horizontal Sync
52 ODD/EVEN I/O Vertical Sync
AC-3/MPEG1-2 AUDIO OUTPUT INTERFACE
43 SCLK O Serial Bit Clock
44 PCM_OUT0 O Audio Serial Output Data 0
24 PCM_OUT1 O Audio Serial Output Data 1
21 PCM_OUT2 O Audio Serial Output Data 2
45 PCM_CLK I/O PCM Clock In or Out
46 LRCLK O Left/Right Clock
47 SPDIF_OUT I/O S/PDIF Output (Tristated after reset)
EXTERNAL INTERRUPTS
23, 25 IRQ[0:1] I External Interrupts