User's Manual Part 1

22 Specifications Merlin GPRS PC Card Specifications
Revision 1.8 P/N 90023363
Interfaces
Merlin Hardware Interface
The modem is electronically configured as a 5-Volt 8-bit I/O memory card. The supported
pins on the 68 position interface connector are driven by a LVTTL interface IC that
includes 5V tolerant inputs and runs off a 3.1V power supply. Signals driven by this card
will reach 3.1V but can accept 5V logic levels on inputs.
Air Interface
Table 5: Air Interface Data Rates
Table 6: Radio Channel Frequency
64 D8 Not Connected
65 D9 Not Connected
66 D10 Not Connected
67 CD2# Connected To Card Ground
68 GND Connected To Card Ground
Coding
Scheme
Data Rates per Time Slot
(Kbps)
Maximum Data Rate (8
Time Slots)
CS1 9.05 72.4
CS2 13.4 107.2
Radio Channel Frequency
Bands Channel Tx Rx
P-GSM 900 1 < n < 124 Freq(n)=890+0.2*n Freq(n)=935+0.2*n
E-GSM 900 0 <
n < 124
975 <
n < 1023
Freq(n)=890+0.2*n
Freq(n)=890+0.2*(n-1024)
Freq(n)=935+0.2*n
Freq(n)=935+0.2*(n-1024)
DCS 1800 512 <
n < 885 Freq(n)=1710.2+0.2*(n-512) Freq(n)=1805.2+0.2*(n-512)
PCS 1900 512 <
n < 810 Freq(n)=1850.2+0.2*(n-512) Freq(n)=1930.2+0.2*(n-512)