A 2 kHz, 4 kHz, N x 8 kHz" />
參數(shù)資料
型號: IDT82V3255TFG
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 39/132頁
文件大小: 0K
描述: IC PLL WAN SMC STRATUM 3 64-TQFP
標準包裝: 1
類型: 時鐘/頻率發(fā)生器,多路復用器
PLL:
主要目的: 以太網(wǎng),SONET/SDH,Stratum
輸入: CMOS,LVDS,PECL
輸出: CMOS,LVDS,PECL
電路數(shù): 1
比率 - 輸入:輸出: 3:3
差分 - 輸入:輸出: 是/是
頻率 - 最大: 622.08MHz
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應商設備封裝: 64-TQFP(10x10)
包裝: 托盤
其它名稱: 82V3255TFG
IDT82V3255
WAN PLL
Pin Description
14
December 3, 2008
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, E3, T3, 6.48 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz, 51.84 MHz,
77.76 MHz, 155.52 MHz, 311.04 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, 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.
SDO
52
I/O
pull-down
CMOS
SDO: Serial Data Output
In Serial mode, this pin is used as the serial data output. Data on this pin is serially clocked
out of the device on the active edge of SCLK.
SCLK
47
I
pull-down
CMOS
SCLK: Shift Clock
In Serial mode, a shift clock is input on this pin.
Data on SDI is sampled by the device on the rising edge of SCLK. Data on SDO is updated
on the active edge of SCLK. The active edge is determined by the CLKE.
JTAG (per IEEE 1149.1)
TRST
37
I
pull-down
CMOS
TRST: JTAG Test Reset (Active Low)
A low signal on this pin resets the JTAG test port.
This pin should be connected to ground when JTAG is not used.
TMS
41
I
pull-up
CMOS
TMS: JTAG Test Mode Select
The signal on this pin controls the JTAG test performance and is sampled on the rising edge
of TCK.
Table 1: Pin Description (Continued)
Name
Pin No.
I/O
Type
Description 1
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