Product specifications

DA100 (50Hz) Chassis – Article for Television Magazine
Page 79 of 80
Sharp Electronics (UK) Limited - March 2003
Revision 2
IC2401 - Megatext
**FW53H
Type: Siemens SDA5273-2 Sharp Part Number: RH-IX1673BMZZ
Package: DIL Price Code: BE
**FW54H (Pro-Logic Models)
Type: Siemens SDA5275-3 Sharp Part Number: RH-IX1709BMZZ
Package: DIL Price Code: BG
Note that a different type of IC is used for the Dolby Pro-Logic version of this chassis. It also has a page
store (IC2402) associated with the Mega Text IC when used in the Pro-Logic set.
Pin Name I/O Comment DC Voltage
1 CLK X Not connected 1.1V
2 TSCQ X Not connected 2.0 to 2.3V
3 VS I Vertical pulse 0.V
4 HS I Horizontal pulse 0.1V
5 XOUT O Crystal 1.5V
6 XIN I Crystal 2.0V
7 GPO X Not connected 0V
8 TM X Grounded 0V
9 CVBS I Composite video 5.0V
10 VDD 1 I Supply 5.0V
11 VDDA I Supply 5.0V
12 VSSA 1 X Ground 0V
13 VDD 2 I Supply 5.0V
14 RES I Reset In 2.9V
15 VDD 3 I Supply 5.0V
16 AVREF I Reference voltage 2.9V
17 VDD 4 I Supply 5.0V
18 A8 O Used with IC2402 0.1V
19 A7 O Used with IC2402 0.1V
20 A6 O Used with IC2402 0.1V
21 A5 O Used with IC2402 0.2V
22 A4 O Used with IC2402 0.2V
23 A3 O Used with IC2402 0.2V
24 A2 O Used with IC2402 0.1V
25 A1 O Used with IC2402 0V
26 A0 O Used with IC2402 1.5V
27 A9 O Used with IC2402 0V
28 A10 X Not connected 3.5V
29 A11 X Not connected 3.9V
30 RASQ O Used with IC2402 1.2V
31 WEQ O Used with IC2402 0V
32 D1 I/O Used with IC2402 4.6V
33 D2 I/O Used with IC2402 4.2V
34 D3 I/O Used with IC2402 4.6V
35 D4 I/O Used with IC2402 4.2V
36 VSS 4 X Grounded 0V
37 CASQ X Not connected 4.6V
38 VSS 3 X Grounded 0V
39 VBB I Reference -1.9V
40 VSS 2 X Grounded 0V
41 VSSA 2 X Grounded 0V
42 RGB GND X Grounded 0V
43 VSS 1 X Grounded 0V
44 R O Red output 0V
45 G O Green output 0V
46 B O Blue output 0V
47 BLAN O Blanking output 0.5V
48 CORQ X Not used 4.98V
49 M3CLK I Clock 4.98V
50 M3LDA I/O Data 0V
51 I2CEN I Data enable 0V
52 INTQ X Not connected 0V