Multi-Tech Systems 92U10E06831 ユーザーズマニュアル
PART 2 – Cellular SocketModems
Chapter 6 – SocketModem Cell and iCell – EV-DO
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342M)
102
DC Electrical Characteristics
5VDC Characteristics (VDD = 5V ± 0.5V)
VDDMAX
= 5.5V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33)
–DTR (40), –TXD (35), –RTS (33)
Input High
Min 2.0V
Min 2.0V
Input Low
Max 0.8V
Max 0.8V
–RESET Input High
Min 2.0V
Input Low
Max 0.8V
Max 0.8V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min 3.8V
Min 3.8V
Output Low
Max 0.55V
Max 0.55V
Current Drive:
4mA
4mA
Digital Input Capacitance
10 pF
Electrical Specifications (from Rodney's specs)
Pin
Signal Name
V
IL
V
IH
V
OL
V
OH
Min
Max
Min
Max
Min
Max
Min
Max
J18
SPI
SPCK -- -- -- -- 0.3
2.9
J19
SPI
MISO -0.3 0.7 2.0 5.5 -- -- -- --
J20
SPI
MOSI -- -- -- -- 0.3
2.9
J21
SPI
CS -- -- -- -- 0.3
2.9
J24
~RESET
0.8
2.0
-- -- -- --
J25
USB
VBUS -0.3 0.8 2.0 8.7 -- -- -- --
J26
GND
-- -- -- -- -- -- -- --
J27
USB
DP
0.8 2
0.3 2.8
J28
USB
DM
0.8 2
0.3 2.8
J33
~RTS
-0.3 0.8 2.0 5.5 -- -- -- --
J34
~RXD
-- -- -- -- 0.26
3.98
J35
~TXD
-0.3 0.8 2.0 5.5 -- -- -- --
J36
~RI
-- -- -- -- 0.55
3.8
J37
~DSR
-- -- -- -- 0.26
3.98
J38
~CTS
-- -- -- -- 0.26
3.98
J39
~DCD
-- -- -- -- 0.26
3.98
J40
~DTR
-0.3 0.8 2.0 5.5 -- -- -- --
J41
GND
-- -- -- -- -- -- -- --
J44
PCM
OUT -- -- -- -- 0 0.45
2.2
2.7
J45 PCM
IN
0
0.91 1.7
2.9
-- -- -- --
J46
PCM
SYNC
-- -- -- -- 0 0.45
2.2
2.7
J47
PCM
CLK -- -- -- -- 0 0.45
2.2
2.7
J48
GPIO0
-0.3 0.8 2.0 5.5
0.4 2.9
J49
GPIO1
-0.3 0.8 2.0 5.5
0.4 2.9
J50
GPIO2
-0.3 0.8 2.0 5.5
0.4 2.9
J51
GPIO3
-0.3 0.8 2.0 5.5
0.4 2.9
J55
HEARTBEAT
-- -- -- -- 0.4
2.9
J58
~LED
LINK
-- -- -- -- 0 0.45
2.85
3.3
J61
VCC
-- -- -- -- -- -- -- --
J63
GND
-- -- -- -- -- -- -- --
*Note: Unspecified per AT91SAM7X256 datasheet. AT91SAM7X256 dependent.
Absolute Maximum Rating:
VCC Voltage (Survival)
-0.3V to +6.0V
Preliminary
Confidential