Difference between revisions of "DCT 5000"

Revision as of 22:47, 13 July 2012

• http://www.gi.com/noflash/digicable_dct5000.html
• http://gicout60.gic.gi.com/customer_docs/
• http://www.linuxdevices.com/news/NS3134551333.html

note these are _not_ the 5200. no HD/PVR functionality in the base model

• cable in
• RF out
• conv in
• conv out
• 2 ieee-1394
• r-l-v in and out
• 1 rs-232
• vga out
• parallel
• ethernet PCNet
• 2 usb.
• data hs
• ir connector
• SPDIF
• S-Video
• smart card
• pcmcia slot. The card located under the mainboard has a legend on it: "DCT5000 PCMCIA Conn".

Includes US power cord, and 8" RF cable, 22 page hookup manual.

• nec vrc5476-83e North Bridge
• nec vr5432 CPU
• Sony CXD3204 IEEE 1394
• Sony CXA2094
• AMD 79C970AKC Ethernet
• 2) InTel E28F320J5-120 flash
• 1) InTel TE28F320C3 flash
• 1) AMD 29DL323CB flash
• Crystal Semi CS4620 EOL :(
• Crystal Semi CS4298 Programmer's manual EOL
• ATI Rage XL
• ATI Rage Theater
• two RF modules
• Broadcom BCM3120 Set-Top Box Tranceiver
• Broadcom BCM3300 Single Chip DOCSIS Cable Modem
• Broadcom 7010 SetTop Box Decoder
• 4) MitsubishiM2V64S30BTP RAM
• 44 pin header. (ide we presume)
• 144 pin SO-DIMM slot. (ram?)
• ALI M1543 Southbridge/SuperI/O
• EPCOS M3654K - 45.75MHz IF splitter (front board F202)
• Altera 7128S CPLD (mainboard U41)
• Lattice M4A3-32/32-10VC CPLD (mainboard U42 & U37)
• Macronix MX23L1611 Mask ROM - Possible Flash Equivalent
• Winbond 32 x 8 SRAM

The processor info can be found here

Or direct links:

• [Datasheet]
• [Users manual vol. 1]
• [Users manual vol. 2]
• [Instruction set for MIPS IV ISA]

Ken McGuire got his on 3/15/2003 and found the following:

• the serial port operates at 38400 baud.
• Hold down the menu and info button, keep holding them while plugging in the box, "boot" will appear (after about 5 seconds of holding) on the display and some stuff will come out the serial port.
• the cursor and channel buttons will cycle through a menu: cold, hunt, disp, n dl, run.
• pressing select at each ot the menu items will do something, and produce data on the RS-232 port.
• there is a reset button inside that does the same as powering on. labelled SW900.
• holding just the menu button during reset gets the "boot" display without any serial port activity.
• the "pcmcia slot" connects to the motherboard via a 24 pin connector J402, so it's probably not true, or complete PCMCIA.
• there is no video out of any of the outputs, VGA, S-VID, video out.
• JTAG comes out to J7, a 10 pin header with half the pins grounded.
• pin-out at: [JTAG pin-out]
• J7 with connector (it's a .050" spacing): [J7conn picture]

Here is what comes out the serial port at boot time:

• DCT5000 Boot ROM v1.17
• Copyright (c) 1999 by General Instrument Corp.

• SUDB 0xBF000004
• 58 00 00 00 53 55 44 42 00 00 11 01 07 00 00 00
• E9 E2 EB E2 01 BC 20 02 74 7B 0B 00 03 10 20 20
• 20 20 20 20 20 20 30 30 30 2E 00 30 00 00 00 00
• 00 00 00 00 00 00 00 00 00 00 00 00 00 02 00 BF
• 00 00 00 00 00 00 00 00 00 00 00 00 00 06 00 BF
• 00 00 00 00 03 01 CF CA

T0mW found that while holding the INFO button down while powering up, or RESET, it will give a verbose debug of the frequencies it is "hunting" on.

MonMotha got his DCT5000 on 3/19/2003. I haven't done much with it other than take the top off, but I'll update this page as I go. So far I'm just attempting to find some of the missing doc links.

sorphin got both of his DCT-5000's on 3/18/2003, and is doing some digging, also found this link http://24.125.76.224:8000/www.cableboxen.prjct to a page where a guy is working on mapping out how the DCT-2000 and 5000 work.

Here's a list of test points, add to them as they are discovered:

• TP9 (next to the CPU, towards the back): Pin 76 of CPU - Sys Clock
• TP11 (Next to U33): SDRAM Clock
• TP510: Ground

Notes TimRiker "found":

Connect a straight-through serial cable from the COM1 port on the host computer to the RS-232 port on the target system. Make sure that the RS-232 connector is attached to internal connector labelled J800. 9600-8-n-1

Power ON the target board. When it boots, a # prompt appears.

Enter the following commands at the # prompt:

export BOOTFILE=vmlinus
export BOOTHOST=
export NETADDR=
export NETMASK=
export BROADCAST=
export ETHERHWADDR=

TimRiker is not sure if this is after installing a different ROM or something... Still looking.

Ken McGuire searches through the binary images of Tim's ROM and [the original ROM] and doesn't find any of the above strings. Nothing comes out his DCT5000's J800 on power-up either.

Here's the DOCSIS configuration file of the box:

NetworkAccess = Yes

Start ClassOfService
ClassID = 1
MaxRateDown = 1500000
MaxRateUp = 128000
PriorityUp = 1
GuaranteedUp = 1280
MaxBurstUp = 0
PrivacyEnable = Yes
EndOf ClassOfService

MaxCPE = 4