Tibbo DS1100 - Page 45

34Embedded Modules
© Tibbo Technology Inc.
50
PM
PLL control line (HIGH- PLL ON, LOW- PLL OFF).
51
SR
Red status LED control line.
52
SG
Green status LED control line.
53
(1,2)
GPIO46
General-purpose I/O line 46.
54
(1,2)
GPIO45/CO
General-purpose I/O line 45 (does not belong to
any 8-bit port);
square wave output line.
55
(1,2)
GPIO48
General-purpose I/O line 48 (does not belong to
any 8-bit port).
56
(1,2)
GPIO47
General-purpose I/O line 47 (does not belong to
any 8-bit port).
57
DBGRX
RX line of debug serial port (details to be
published).
58
VCCB
Backup power for the real-time counter; connect
to 3.3V through a 50 Ohm resistor.
59
DBGTX
TX line of debug serial port (details to be
published).
60
VCC
Positive power input, 3.3V nominal, +/- 5%, max.
current consumption 230mA (100BaseT, PLL on).
61
TX-
Ethernet port, negative line of the differential
output signal pair.
62
AVCC
"Clean" power output for magnetics circuitry:
EM1000-...- 00: 3.3V (not in production)
EM1000-...- 01: 2.5V (currently in production).
63
TX+
Ethernet port, positive line of the differential
output signal pair.
64
EY
Yellow Ethernet status LED control line.
65
EM1000-...- 00:
---
EM1000-...- 01:
SCAP
EM1000-...- 00: ---
EM1000-...- 01: external supercapacitor input.
66
EG
Green Ethernet status LED control line.
67
RX-
Ethernet port, negative line of the differential
input signal pair.
68
EM1000-...- 00:
---
EM1000-...- 01:
AGND
EM1000-...- 00: ---
EM1000-...- 01: analog ground.
69
RX+
Ethernet port, positive line of the differential input
signal pair.
70
EM1000-...- 00:
---
EM1000-...- 01:
AGND
EM1000-...- 00: ---
EM1000-...- 01: analog ground.
71
(4)
GND
System ground.
72
(4)
VCC
3.3V power available on this pin. Do not connect
to the power source. To avoid current loops, only
use pin #60 to power the device.