39
Common Interface A (CI A) is always fitted, Common Interface B (CI B) is an optional fit. If CI B is not required it can be bypassed
by a network of resistors (R413 - R418, R420, R421, R423 - R425) on the PCB to route the transport stream direct to the demux IC.
Each chip contains the following circuit functions:
•
Interface between the CPU bus and the ‘PCMCIA’ style interface on the module
•
Transport stream routing control
•
Control of the CI module power switch IC (IC401, IC403)
•
Internal control register stack
In addition the CI A chip includes:
•
Provision for a second transport stream input and routing control
•
Address decoding to provide chip enables for other devices
•
Control of the audio PLL
INITIALISATION
At power up the FPGA (Field Programmable Gate Array) devices need to be configured. A block of code is clocked to the devices
from the CPU using the SC1 port of the CPU (see section later) using handshaking lines and a ‘configuration’ register to confirm
correct programming of the devices. The code transferred may be the same for PCBs carrying either one or two devices, if the
second FPGA is not fitted the extra code is ignored by the first device.
Although the FPGAs are programmed devices, after they have been programmed they effectively behave as ‘hardware’ and will be
referred to ‘CI controller ICs’.
Internal control register structure
Both these devices are connected to the CPU via a 16 bit data bus and 24 bit address bus along with the associated control and
handshaking lines.
The transport stream is routed through the CI A and CI B chips in a daisy-chain manner and fed to the demux section of the
CPU/demux IC.
The CI controller ICs each have 4 internal registers to allow the state of the CI to be read/set-up by the CPU. These are as follows:
Bit
Register
R/W
7
6
5
4
3
2
1
0
Status
R
0
0
0
IRQ
VS2
VS1
CD2
CD1
Control 0
R/W X
R/rout
X
TsAB
En1
En0
Vcc3
Vcc5
Control 1
R/W X
X
S/cyc
I/O
Reg
I/face
Int
Reset
Configuration
R
X
X
X
X
X
1
1
0
Содержание C28W40TN
Страница 29: ...28 GENERAL BLOCK DIAGRAM ...
Страница 91: ...90 CASE DE FONCTIONS EXTRÉMITÉ HAUTE CASE FONCTIONS EXTRÉMITÉ BASSE ...
Страница 102: ...101 SCHÉMA SYNOPTIQUE ...
Страница 165: ...164 HÖHERE FEATURE BOX NIEDRIGE FEATURE BOX ...
Страница 177: ...176 BLOCKSCHALTBILD ...
Страница 200: ...199 ...
Страница 225: ...224 WAVEFORMS ...
Страница 226: ...225 ...
Страница 227: ...226 ...
Страница 228: ...227 ...
Страница 229: ...228 ...
Страница 230: ...229 IC DATA I200 ...
Страница 231: ...230 ...
Страница 232: ...231 ...
Страница 233: ...232 IE01 ...
Страница 234: ...233 ...
Страница 235: ...234 IE02 ...
Страница 236: ...235 ...
Страница 237: ...236 ...
Страница 238: ...237 MECHANICAL ...
Страница 239: ...239 C32W35TN ...
Страница 240: ...240 C32W35TN ...
Страница 241: ...241 C32W35TN ...
Страница 242: ...242 CL28W35TAN ...
Страница 243: ...243 CL28W35TAN ...
Страница 244: ...244 CL28W35TAN ...
Страница 245: ...245 CL32W35TAN ...
Страница 246: ...246 CL32W5TAN ...
Страница 247: ...247 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 248: ...248 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 249: ...249 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 250: ...250 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 251: ...251 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 252: ...252 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 253: ...253 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 254: ...254 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 255: ...255 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 256: ...256 C28W40TN C32W40TN ...
Страница 257: ...257 C28W40TN C32W40TN ...
Страница 258: ...258 C28W40TN C32W40TN ...
Страница 259: ...259 C28W40TN C32W40TN ...
Страница 260: ...260 C28W40TN C32W40TN ...
Страница 261: ...261 C28W40TN C32W40TN ...
Страница 262: ...262 C28W40TN C32W40TN ...
Страница 263: ...263 C28W40TN C32W40TN C28W40TN C32W40TN ...
Страница 264: ...264 C28W40TN C32W40TN ...
Страница 265: ...265 C28W40TN C32W40TN ...
Страница 266: ...266 C28W40TN C32W40TN ...
Страница 267: ...267 C28W40TN C32W40TN ...
Страница 268: ...268 C28W40TN C32W40TN ...
Страница 269: ...269 C28W40TN C32W40TN ...
Страница 270: ...270 C28W40TN C32W40TN ...
Страница 271: ...271 C28W40TN C32W40TN ...
Страница 272: ...272 C28W40TN C32W40TN ...
Страница 273: ...273 C28W40TN C32W40TN ...
Страница 274: ...274 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 275: ...275 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 276: ...276 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 277: ...277 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 278: ...278 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 279: ...279 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 280: ...280 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 281: ...281 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 282: ...282 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 283: ...283 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 284: ...284 C35W35TN CL28W35TAN CL32W5TAN ...
Страница 285: ...285 C28W40TN C32W40TN ...
Страница 286: ...286 C28W40TN C32W40TN ...
Страница 287: ...287 C28W40TN C32W40TN ...
Страница 288: ...288 C28W40TN C32W40TN ...
Страница 289: ...289 C28W40TN C32W40TN ...
Страница 290: ...290 C28W40TN C32W40TN ...
Страница 291: ...291 C28W40TN C32W40TN ...
Страница 292: ...292 C28W40TN C32W40TN ...
Страница 293: ...293 C28W40TN C32W40TN ...
Страница 294: ...294 C28W40TN C32W40TN ...
Страница 295: ...295 C28W40TN C32W40TN ...
Страница 296: ...296 C28W40TN C32W40TN ...
Страница 297: ......
Страница 299: ...Users Guide C28W40TN C32W40TN ...
Страница 351: ...notes ...
Страница 352: ...notes ...
Страница 353: ...notes ...
Страница 355: ...Users Guide C28W35TN C32W35TN S C R E E N S C R E E N ...