ACS406CS Semtech Corporation, ACS406CS Datasheet - Page 20

• Manufacturer Part Number: ACS406CS
• Description: Two-chip Fiber Optic Modem Ics / ACS4060 100-pin Tqfp, ACS9010 44-pin TQFP
• Manufacturer: Semtech Corporation

Pin Description ACS4060 part 1
32,47
49,79
36,46
64,67
69,76
77,92
11,12
13,14
15,34
Pin
94
24
26
29
22
25
27
30
60
59
80
82
61
31
10
2
5
7
4
6
9
1
TNEG1
TNEG2
TNEG3
TNEG4
RPOS2
RPOS3
RPOS4
RNEG1
RNEG2
RNEG3
RNEG4
TPOS1
TPOS2
TPOS3
TPOS4
RPOS1
PORB
VD+
GND
XTO
DCD
VA+
XTI/
Sym
IO
O
O
O
-
-
-
I
I
-
I
supply
supply
Ground
System Clock
Crystal
+ve power
+ve power
Transmit Data
Pos
Transmit Data
Neg
Receive Data
Pos
Receive Data
Neg
Data Carrier
Detect
Power On
Reset
Name
1 for normal operation.
Connect fundamental parallel
appropriate padding capacitor
communicating modems have
synchronized, and are
communicating.
connected to an RC circuit so
Power supply, 4.75 - 5.25
Volts.
Power supply for Clock
Recovery PLL, 4.75 - 5.25
Volts.
Power Supply
Transmit channel 1, corresponds
to +ve in bipolar signal.
Transmit channel 2, corresponds
to +ve in bipolar signal.
Transmit channel 3, corresponds
to +ve in bipolar signal.
Transmit channel 4, corresponds
to +ve in bipolar signal.
Transmit channel 1, corresponds
to -ve in bipolar signal.
Transmit channel 2, corresponds
to -ve in bipolar signal.
Transmit channel 3, corresponds
to -ve in bipolar signal.
Transmit channel 4, corresponds
to -ve in bipolar signal.
Receive channel 1, corresponds
to +ve in bipolar signal.
Receive channel 2, corresponds
to +ve in bipolar signal.
Receive channel 3, corresponds
to +ve in bipolar signal.
Receive channel 4, corresponds
to +ve in bipolar signal.
Receive channel 1, corresponds
to -ve in bipolar signal.
Receive channel 2, corresponds
to -ve in bipolar signal.
Receive channel 3, corresponds
to -ve in bipolar signal.
Receive channel 4, corresponds
to -ve in bipolar signal.
resonance crystal with
to GND
When DCD = 1, then the
Will initialise the device when
PORB= 0. PORB is normally
that a POR is automatically
invoked on power-up. PORB=
Description
20
Pin Description ACS4060 part 2
Pin
100
23
95
97
96
98
93
50
58
20
28
33
99
42
16
19
17
18
21
8
3
TmCLK
RmCLK
RCLK2
RCLK3
RCLK4
TCLK1
TCLK2
TCLK3
TCLK4
RCLK1
RESEL
TRSEL
RmD2
RmD3
RmD4
TmD1
TmD2
TmD3
TmD4
RmD1
M4B
Sym
I/O
I/O
IO
O
O
O
I
I
I
I
CLK
clocks
(support
channel)
Select
Select
Transmit
maintenance
Transmit
Receive Clock
Receive clocks
Receive Edge
Transmit Edge
Transmit
maintenance
Data
Receive
maintenance
Data
Maintenance
4 channel
mode
Name
samples TmD on falling edge
'FRAME'
edge selected by input TRSEL.
Support channel receive clock
data is valid on edge selected
clock when FRAME mode is
each channel is reduced by a
Transmit maintenance Clock.
when device is not in valid
frame mode. See input
Transmit Clock 1/2/3/4, samples
TPOS/TNEG data on clock
With frame = '0' then nominal
frequency = 64KHz
Receive Clock, RPOS/RNEG
by input "RESEL".
When RESEL = 1,
RPOS/RNEG and RmD data is
valid on the rising edge of
RCLK/RmCLK. When RESEL
= 0, the data is valid on the
falling edge of RCLK/RmCLK.
When TRSEL = 1,
TPOS/TNEG and TmD data is
latched on the falling edge of
TCLK/TmCLK. When TRSEL
= 0, the data is latched on the
rising edge of TCLK/TmCLK.
NRZ maintenance channel.
TmD is sampled on the
TmCLK clock edge defined by
TRSEL (when the device is not
in FRAME mode).
NRZ maintenance channel. Data
is set-up with repect to RCLK
valid else data is set-up with
respect to RmCLK. Data is
valid on the clock edge selected
by RESEL.
When M4B = 1, the number of
maintenance channels is 1
When M4B = 0, the number of
maintenance channels increases
to 4, where the bandwidth of
factor of 4. See Table 20
ACS406CS Issue 1.6 January 1999.
Description