ACS104A Semtech Corporation, ACS104A Datasheet - Page 7

• Manufacturer Part Number: ACS104A
• Description: Acs104a Fiber Modem
• Manufacturer: Semtech Corporation

PIN DESCRIPTION
PLCC-
28 Pin
10
12
13
11
2
3
4
5
6
7
8
9
1
-
-
-
-
-
-
-
-
Advanced Communications
TQFP-
44 Pin
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
11
7
6
8
9
Sym bol
DCDB
GND
XLO
GND
VD+
DSR
DR3
ERL
DTR
HBT
HD1
HD2
DP1
RTS
RIO
RxD
XLI
TxD
CTS
IC
IC
IO
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
-
-
-
Selection
Ground
Send & Data
Channel 2 i/p
output
Channel 3 o/p
connected
Select
Oscillator
Crystal
Ground
connected
supply
Channel 3 i/p
'Heart beat'
Clear To Send
& Data
Channel 2 o/p
Mode
Data Carrier
Detect
Request To
Ring indicator
Data Set
Ready & Data
Internally
Received Data Received data
Data Rate
Internally
+ve power
Transm it Data
Error Detector
Data Term inal
Ready/Data /
Lock & power
up indicator
Handshake
Delay
Handshake
Delay
Nam e
Selects operating m ode
additional low frequency data
channel input
additional low frequency data
channel output
Should not be connected to.
Connect fundamental parallel
capacitors to GND
Should not be connected to.
coding infringem ent is detected,
additional low frequency data
channel input
Sets the Handshake bandwidth,
see p4
additional low frequency data
channel output
Sets the Handshake bandwidth,
see p4
Power Supply
Modem control signal - LOW
when modems locked
Modem control signal or
An alternative data channel
which m ay be for the
propagation of the RS232 Ring
indicator signal.
Modem control signal or
The DR(1:3) inputs select the
Data Rates, see p2.
resonance crystal with padding
Power Supply ground.
Power Supply, 3.3-5.25 V olts
Transm itted data
Indicates quality of line. If a
ERD goes High. Reset by
PORB to Low
Modem contrrol signal or
Indicates power up and modem
lock, pulses slowly when
locked, fast unlocked.
Modem control signal or
Description
7
PLCC-
28 Pin
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
-
-
-
-
-
-
-
-
-
TQFP-
44 Pin
40
42
43
44
27
28
29
30
31
33
32
34
35
36
37
38
39
41
4
-
1
2
3
5
PORB
PINN
PINP
DM3
DM2
DM1
GND
CNT
GND
LAN
VD+
NSB
V A+
TRC
Sym
DR1
DR2
LAP
DP4
DP3
DP2
NC
RII
IC
IC
IO
IO
IO
IO
O
O
I
I
I
I
-
-
-
I
I
-
I
I
I
I
-
I
Select
connected
Ground
Capacitor
Ground
connected
Current
Selection
Selection
Selection
Power-on-
Reset
Data Rate
Diagnostic
Modes
Internally
New Slice Bar Connect to GND.
Not connected
Integration
PIN Cathode
PIN Anode
LED Cathode
LED Anode
+ve Supply
Internally
Transmit
Ring indicator
input
Mode
Mode
+ve Supply
Mode
Name
ACS104A Data Sheet
circuit as in figure 4, so a reset
Should not be connected to.
Ground Supply
of 27-5Mhz
Ground Supply
Connections to a PIN diode
Connections to LED or LASER
Should not be connected to.
Selects operating mode
Selects operating mode
Selects operating mode
Will reset the device when
PORB = 0. Connect to an RC
performed on power-up.
The DR(1:3) inputs select the
Data Rates, see p3
DM(1:3) input select for
Diagnostic Modes such as local
loopback and remote loopback
Not connected
Integrating capacitor is placed
between CNT and GND of
value 10nF-47nF with an XTAL
Power supply, 3.3-5.25 V olts
Defines transmit current to the
LED. Minimum and maximum
values are set by connecting
TRC to GND via a resistor,
value R defined by equation on
page 2.
An alternative data channel
which may be for the
propagation of the RS232 Ring
indicator signal.
Power Supply, 3.3-5.5 V olts
Description
2