Cisco 3640 Multiservice Platform

Cisco 3600 Series Routers Hardware Installation Guide (archived)
Installing Power Supplies in Cisco 3600 Series Routers (dead)
Installing the Grounding Lug on Cisco 2600 and Cisco 3600 Series Routers (dead)
Rack or Wall-Mounting Cisco 3600 Series Routers and the Redundant Power System (dead)
Upgrading System Memory in Cisco 3600 Series Routers (dead)
Cisco 2600 and 3600 Hints and Tricks (archived)
Cisco 3620 and Cisco 3640 Router Quick Start Guide (archived)
Center-Mount Bracket Installation Guide for Cisco 3640 Series Routers (dead)
Password Recovery Procedure for the Cisco 3600 and 3800 Series Routers (dead)
Auxiliary Port, Console Port, And Adapter Pinouts... (archived)
Cisco 3600 Series Router Architecture (archived)
Cisco RPS Hardware Installation Guide (archived)


Cisco 3640 Board

CR1 PCMCIA Slot 0 and 1 LEDs
CR7,8 Board LEDs (diags? Status?)
J1 AUX 115Kb/s
J2 CON 115Kb/s
J3 BAUD RST - Baud Reset
J4 Dual PCMCIA socket
J6 Board Reset outline
J7 ENV MON (Env Monitor??)
J8 IO_Bus CTL outline
J9 IODATA P..15 outline
J10 GT A CTL outline
J11 R4600 CTL
J12 Watchdog Disable outline
J19,21 Riser Header
J20,22 Riser header
J23 RPS (Redundant Power Supply)
J24 Status LED
P1 Test?
P2 Board power
P3 NM header
P4 NM Header
PCI Test outlines
Status Active or Ready LEDs
U2 NS PC16552DV Dual UART
U13 PLCC
U14 IDT 79R4700-100DP
U18-21 DRAM 72 pin 60 ns (Tin Lead)
U23,24 Flash
U27 ROM 128/256/512
U28 M48Z128Y-85PM1 128Kx8 NVRAM (alt)
U31 PLCC
U42 Unknown (heatsink)
U43 intel SPD6729QCE PCI-to-PC Card Controller
U50,51,53 Digital 21052-AB PCI-to-PCI bridge
U52 PLCC
U58 PLCC
Y1 3.6864 MHz osc
Y2 50.0000 MHz osc

J3 BAUD RST - Jumper J3 on the motherboard of the Cisco 2600 and 3600 Series Routers controls the speed reset. The factory default position of the shunt shorts pins 2-3. When the shunt is moved to pins 1-2, the console is reset to 9600 baud on the next power cycle. The following figures show the location of the console reset jumper, labeled DUART_RST or BAUD_RST.


Memory

72 pin SIMMs, 60 ns speed, Tin leads. Both non-parity and parity SIMMs supported. Just to be simple, all one type or the other.

Cisco 3640 supports either 32- or 64-bit operation. Router performance is approximately 20 percent slower in 32-bit mode than in 64-bit mode. To use 64-bit mode, you must install DRAM SIMMs in pairs of the same size. Generally, basic software feature sets (such as IP) use 32-bit DRAM SIMMs and robust software feature sets (such as Enterprise) use 64-bit DRAM SIMMs.

Note: I dimly remember a snippet that the 3640 will support parity if both SIMMs in a bank are parity. If not, the bank will be treated as non-parity {Ed}.

Follow these rules to use 64-bit operation:

  • SIMMs in banks 0 and 1 must have:
    • Same capacity
    • Same access time (in nanoseconds).
  • SIMMs in banks 2 and 3 must have:
    • Same capacity, and the same size or smaller than those in banks 0 and 1
    • Same access time (in nanoseconds)

3640 Front View

The main difference between the console and auxiliary ports is that the auxiliary port supports hardware flow control and the console port does not. Because the auxiliary port supports flow control, it is ideally suited for use with the high-speed transmissions of a modem. Console terminals transmit at slower speeds than modems; therefore, the console port is ideally suited for use with console terminals.

System LED

Color Description
Off Router is not receiving power.
Blinking green Router is running the ROM monitor. No errors detected.
Solid green Router is operating normally. No errors detected.
Amber Router is receiving power but not functioning properly. Possible POST error or over-temperature condition detected.
Alternating amber and green Power-on self-test detected. The router is attempting to reload the ROM monitor.

RPS LED

Color RPS Status
Off Not installed.
Blinking green RPS and power supply are both on. Choose only one by:
- Unplug power supply and use the RPS.
- Turn off RPS and use power supply. RPS can remain connected
Solid green Operational.
Amber
Installed but not operational

ACTIVE, READY, and PCMCIA LEDs in Cisco 3640 Routers

LED Description
ACTIVE 0, 1, 2, 3, 4, 5, 6
Blinks to indicate network activity on the module installed in the indicated slot.
READY 0, 1, 2, 3, 4, 5, 6 Functional module installed in indicated slot. If LED is off, slot is empty or module is not functional.
PCMCIA 0, 1 Data activity on the indicated PCMCIA slot.

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Ardent Tool of Capitalism - MAD Edition! is maintained by Tomáš Slavotínek.
Last update: 27 May 2022 - Changes & Credits | Legal Info & Contact