
IDT82V3358
SYNCHRONOUS ETHERNET WAN PLL
Pin Description
14
May 19, 2009
IN2_POS
IN2_NEG
25
26
I
PECL/LVDS
IN2_POS / IN2_NEG: Positive / Negative Input Clock 2
A 2 kHz, 4 kHz, N x 8 kHz 3, 1.544 MHz (SONET) / 2.048 MHz (SDH), 6.48 MHz, 19.44 MHz,
25.92 MHz, 38.88 MHz, 51.84 MHz, 77.76 MHz, 155.52 MHz, 156.25 MHz, 311.04 MHz or
622.08 MHz clock is differentially input on this pair of pins. Whether the clock signal is PECL
or LVDS is automatically detected.
IN3_CMOS
34
I
pull-down
CMOS
IN3_CMOS: Input Clock 3
A 2 kHz, 4 kHz, N x 8 kHz 3, 1.544 MHz (SONET) / 2.048 MHz (SDH), 6.48 MHz, 19.44 MHz,
25.92 MHz, 38.88 MHz, 51.84 MHz, 77.76 MHz or 155.52 MHz clock is input on this pin.
Output Frame Synchronization Signal
FRSYNC_8K
17
O
CMOS
FRSYNC_8K: 8 kHz Frame Sync Output
An 8 kHz signal is output on this pin.
MFRSYNC_2K
18
O
CMOS
MFRSYNC_2K: 2 kHz Multiframe Sync Output
A 2 kHz signal is output on this pin.
Output Clock
OUT1_POS
OUT1_NEG
19
20
O
PECL/LVDS
OUT1_POS / OUT1_NEG: Positive / Negative Output Clock 1
A 1 Hz, 400 Hz, 2 kHz, 8 kHz, 64 kHz, N x E1 4, N x T1 5, N x 13.0 MHz 6, N x 3.84 MHz 7,
5 MHz, 10 MHz, 20 MHz, 25 MHz, E3, T3, 6.48 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz,
51.84 MHz, 77.76 MHz, 125 MHz, 155.52 MHz, 156.25 MHz, 311.04 MHz, 312.5 MHz or
622.08 MHz clock is differentially output on this pair of pins.
OUT2
56
O
CMOS
OUT2: Output Clock 2
A 1 Hz, 400 Hz, 2 kHz, 8 kHz, 64 kHz, N x E1 4, N x T1 5, N x 13.0 MHz 6, N x 3.84 MHz 7,
5 MHz, 10 MHz, 20 MHz, 25 MHz, E3, T3, 6.48 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz,
51.84 MHz, 77.76 MHz, 125 MHz, 155.52 MHz, 156.25 MHz or 312.5 MHz clock is output on
this pin.
OUT3
55
O
CMOS
OUT3: Output Clock 3
A 1 Hz, 400 Hz, 2 kHz, 8 kHz, 64 kHz, N x E1 4, N x T1 5, N x 13.0 MHz 6, N x 3.84 MHz 7,
5 MHz, 10 MHz, 20 MHz, E3, T3, 6.48 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz, 51.84 MHz,
77.76 MHz or 155.52 MHz clock is output on this pin.
OUT4
59
O
CMOS
OUT4: Output Clock 4
A 1 Hz, 400 Hz, 2 kHz, 8 kHz, 64 kHz, N x E1 4, N x T1 5, N x 13.0 MHz 6, N x 3.84 MHz 7,
5 MHz, 10 MHz, 20 MHz, E3, T3, 6.48 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz, 51.84 MHz,
77.76 MHz or 155.52 MHz clock is output on this pin.
Microprocessor Interface
CS
44
I
pull-up
CMOS
CS: Chip Selection
A transition from high to low must occur on this pin for each read or write operation and this
pin should remain low until the operation is over.
INT_REQ
5
O
CMOS
INT_REQ: Interrupt Request
This pin is used as an interrupt request. The output characteristics are determined by the
HZ_EN bit (b1, 0CH) and the INT_POL bit (b0, 0CH).
SDI
CLKE
43
42
I
pull-down
CMOS
SDI: Serial Data Input
In Serial mode, this pin is used as the serial data input. Address and data on this pin are seri-
ally clocked into the device on the rising edge of SCLK.
CLKE: SCLK Active Edge Selection
In Serial mode, this pin selects the active edge of SCLK to update the SDO:
High - The falling edge;
Low - The rising edge.
Table 1: Pin Description (Continued)
Name
Pin No.
I/O
Type
Description 1