Hacking the Askey CME010: day #1
At home we have had internet via cabletv for a long time, an Askey CME010 modem was doing the job for the last years. Now the lines changed, and the modem is left alone. Time to open source it :)
Yes, I am going to port Linux onto it…
-break->
!Intro
“DOCSIS 1.0 external modem based on Cisco reference design”
says [Cable Digital News|http://www.cabledatacomnews.com/cmic/docsiscm.php?start=0&numPerPage=500]
!Power supply
It has a 8 pin minidin coming from the power supply:
- 5V DC 3A
- 8V DC 0.65A
- 40V DC 7mA
Pinout will come later.
!Chips
It has several big chips and smaller ones, I will only mention the ones I need.
- CPU: MC68EN360M25K (Motorola QUICC)
- Flash: 2x Intel E28F016S5-85-5V
- 16 Mbit
- 5V
- 85ns
- RAM: 2x Vanguard VG2618160CJ-6
- 16 Mbit
- NVRAM: 2x ISSI IS61C1024
- [Datasheet|http://www.issi.com/pdf/61C1024L.pdf]
- 128K * 8 -> 1024 byte
- Ethernet: Level One LXT905PC (9910 EQS8)
- Serial: HIN232CB
- 5V powered
- similar to the Maxim 232
- [Datasheet|http://www.digchip.com/datasheets/parts/datasheet/235/HIN232.php]
- DOCSIS: BCM3037, BCM3116, BCM3220
!Serial
The serial port is wired out to J24 which is a 10 pin connector, however only 4 pins (1-4) are connected. These are converted by the HIN232 chip.
Next step will be connecting the serial port, I will report about this.
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