User's Manual

CHAPTER
3-1
Cisco 3200 Series Mobile Access Router Hardware Guide
OL-5816-04
3
Serial Mobile Interface Card (SMIC)
The Serial Mobile Interface Card (SMIC) is one component of the Cisco 3200 Series Mobile Access
Router. It provides the router up to 4 high–speed sets of serial signals in both data terminal equipment
(DTE) and data circuit equipment (DCE) modes. Additional components provide power and link
interfaces to the SMIC. For example, the Mobile Access Router Card (MARC) provides the host
processor, memory, and headers for the 10/100 Fast Ethernet, console, and auxiliary signals for the
router. The exact configuration of your router will vary, depending on how it was configured by your
vendor.
Note This section provides basic information about the SMIC hardware for the purpose of performing simple
troubleshooting, such as reconnecting a loose cable. To solve more difficult problems, please contact
your vendor.
Each SMIC provides the following:
• Support for 2 to 4 sets of serial signals with protocol support for HDLC, asynchronous, synchronous
and octet-oriented PPP modes. The signals can be configured to any serial standard (EIA/TIA-232,
EIA/TIA-449, EIA/TIA-530, EIA/TIA-530A, EIA/TIA-X.21, or CCITT V.35).
• DCE and DTE mode support on each set of serial signals.
• Speeds of 2 Mbps for synchronous data transfer and 115 Kbps for asynchronous data transfer on
each serial interface. All serial standards reach 2 Mbps (for synchronous) except for the
EIA/TIA-232 standard which supports up to 192K.
Note The PCI bus and ISA bus utilize keying features in the standard stacking headers to guarantee proper
module installation. On the PCI bus, pin D30 is removed and the D30 opening plugged. On the ISA Bus,
pin C19 and pin B10 are removed, and the pin C19 and pin B10 openings are plugged.
The SMIC draws power from the PCI and the ISA connectors. Table 3-1 shows the estimated power
consumption. Note that these are theoretical maximum wattages.
Table 3-1 SMIC Estimated Power Consumption
Voltage Current Draw Power Source
+5.0 V 1.0 amps 5.0 W ISA and PCI connectors
+3.3 V 0.5 amps 1.7 W PCI connectors