ACS8526P SEMTECH [Semtech Corporation], ACS8526P Datasheet - Page 4

• Manufacturer Part Number: ACS8526P
• Description: Line Card Protection Switch for PDH, SONET or SDH Systems
• Manufacturer: SEMTECH [Semtech Corporation]

Table 1 Power Pins
Note...I = Input, O = Output, P = Power, TTL
Table 2 Internally Connected
Table 3 Other Pins
Revision 4.01/June 2006 © Semtech Corp.
Pin Description
ADVANCED COMMUNICATIONS
8, 9,
12
22
27
32, 39,
54
4
14, 57
15, 58
7, 10,
11
31, 40,
53
21
1, 3
2, 16, 23, 24,
25, 26, 60,
61, 62
55, 59
5
6
13
17
Pin Number
Pin Number
Pin Number
IC1, IC2, IC3, IC4,
IC5, IC6, IC7,
IC8 IC9
NC1, NC2
VD1+, VD2+,
VD3+
VDD_DIFF
VDD5V
VDD1, VDD2,
VDD3,
VA1+
VA2+, VA3+
AGND3, AGND4
DGND1, DGND2,
DGND3
DGND4, DGND5,
DGND6
GND_DIFF
AGND1, AGND2
LOS_ALARM
REFCLK
SRCSW
FrSync
Symbol
Symbol
Symbol
I/O
I/O
I/O
O
O
P
P
P
P
P
P
P
P
P
P
I
I
-
-
U
= TTL input with pull-up resistor, TTL
TTL/CMOS
TTL/CMOS
Type
TTL
Type
Type
TTL
-
-
-
-
-
-
-
-
-
-
-
-
-
D
Internally Connected: Leave to float.
Not Connected: Leave to float.
LOS_Alarm: Flag to indicate loss of activity of currently selected reference
source.
Reference Clock: 12.800 MHz (refer to section headed Local Oscillator Clock).
Source Switching: Controls switchover between SEC1 and SEC2 inputs as the
selected reference. SRCSW must be held High on power-up or reset, and for a
further 251 ms after PORB has gone High. See “Initialization” on page 8.
Output Reference: 8 kHz Frame Sync output.
Supply Voltage: Digital supply to gates in analog section, +3.3 Volts ±10%.
Supply Voltage: Digital supply for differential output pins 19 and 20, +3.3 Volts
±10%.
Digital Supply for +5 Volts tolerance to input pins. Connect to +5 Volts (±10%) for
clamping to +5 Volts. Connect to VDD for clamping to +3.3 Volts. Leave floating
for no clamping, input pins tolerant up to +5.5 Volts.
Supply Voltage: Digital supply to logic, +3.3 Volts ±10%.
Supply Voltage: Analog supply to clock multiplying PLL, +3.3 Volts ±10%.
Supply Voltage: Analog supply to output PLLs APLL2 and APLL1, +3.3 Volts
±10%.
Supply Ground: Analog ground for output PLLs APLL2 and APLL1.
Supply Ground: Digital ground for components in PLLs.
Supply Ground: Digital ground for logic.
Supply Ground: Digital ground for differential output pins 19 and 20.
Supply Ground: Analog grounds.
FINAL
Page 4
D
= TTL input with pull-down resistor.
Description
Description
Description
ACS8526 LC/P LITE
DATASHEET
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