參數(shù)資料
型號(hào): DS26518GN
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi): 數(shù)字傳輸電路
英文描述: 8-Port T1/E1/J1 Transceiver
中文描述: DATACOM, FRAMER, PBGA256
封裝: 17 X 17 MM, 1 MM, PITCH, TECSBGA-256
文件頁(yè)數(shù): 21/286頁(yè)
文件大?。?/td> 1539K
代理商: DS26518GN
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DS26518 8-Port T1/E1/J1 Transceiver
21 of 286
NAME
PIN
TYPE
FUNCTION
TRANSMIT FRAMER
TSER1
TSER2
TSER3
TSER4
TSER5
TSER6
TSER7
TSER8
TCLK1
TCLK2
TCLK3
TCLK4
TCLK5
TCLK6
TCLK7
TCLK8
F6
E7
R4
N7
M10
L11
F10
D12
C5
D7
P5
L8
L10
N11
E10
B13
Input
Transmit NRZ Serial Data 1 to 8.
These pins are sampled on the falling edge of
TCLKn when the transmit-side elastic store is disabled. These pins are sampled
on the falling edge of TSYSCLKn when the transmit-side elastic store is enabled.
In IBO mode, data for multiple framers can be used in high-speed multiplexed
scheme. This is described in Section
9.8.2
. The table there presents the
combination of framer data for each of the streams.
TSYSCLKn is used as a reference when IBO is invoked. See
Table 9-8
.
Input
Transmit Clock 1 to 8.
A 1.544MHz or a 2.048MHz primary clock. Used to clock
data through the transmit side of the transceiver. TSERn data is sampled on the
falling edge of TCLKn. TCLKn is used to sample TSERn when the elastic store is
not enabled or IBO is not used.
TSYSCLK1
P13
Input
Transmit System Clock 1.
1.544MHz, 2.048MHz, 4.096MHz, 8.192MHz, or
16.384MHz clock. Only used when the transmit-side elastic store function is
enabled. Should be tied low in applications that do not use the transmit-side
elastic store. The clock can be 4.096MHz, 8.912MHz, or 16.384MHz when IBO
mode is used. TSYSCLK1 does not have an internal pulldown resistor.
Note:
If
the
GTCR1
.528MD bit is set, TSYSCLK1 becomes the master TSYSCLK for all
framers.
TSYSCLK2/
AL/RSIGF/FLOS2
TSYSCLK3/
AL/RSIGF/FLOS3
TSYSCLK4/
AL/RSIGF/FLOS4
TSYSCLK5/
AL/RSIGF/FLOS5
TSYSCLK6/
AL/RSIGF/FLOS6
TSYSCLK7/
AL/RSIGF/FLOS7
TSYSCLK8/
AL/RSIGF/FLOS8
TSYNC1/
TSSYNCIO1
TSYNC2/
TSSYNCIO2
TSYNC3/
TSSYNCIO3
TSYNC4/
TSSYNCIO4
TSYNC5/
TSSYNCIO5
TSYNC6/
TSSYNCIO6
TSYNC7/
TSSYNCIO7
F3
L3
P3
P14
L14
F14
C14
Input with
internal
pulldown/
Output
Transmit System Clock 2 to 8.
1.544MHz, 2.048MHz, 4.096MHz, 8.192MHz, or
16.384MHz clock. Only used when the transmit-side elastic store function is
enabled. Should be tied low in applications that do not use the transmit-side
elastic store. The clock can be 4.096MHz, 8.912MHz, or 16.384MHz when IBO
mode is used. TSYSCLK1 does not have an internal pulldown resistor.
Note:
If
the
GTCR1
.528MD bit is set, TSYSCLK1 becomes the master TSYSCLK for all
framers.
Analog Loss/Receive-Signaling Freeze/Framer LOS.
Analog LOS reflects the
LOS (loss of signal) detected by the LIU front-end and framer LOS is LOS
detection by the corresponding framer; the same pins can reflect receive-
signaling freeze indications. This selection can be made by settings in the Global
Transceiver Clock Control Register 1 (
GTCCR1
).
AL/RSIGF/FLOS[8:2] is available only by setting the
GTCR1
.528MD bit to 1.
B4
F7
M6
M7
N10
T12
B11
TSYNC8/
TSSYNCIO8
A13
Input/
Output
Transmit Synchronization 1 to 8.
A pulse at these pins establishes either frame
or multiframe boundaries for the transmit side. These signals can also be
programmed to output either a frame or multiframe pulse. If these pins are set to
output pulses at frame boundaries, they can also be set to output double-wide
pulses at signaling frames in T1 mode. The operation of these signals is
synchronous with TCLK[8:1].
Transmit System Synchronization In.
These pins are selected when the
transmit-side elastic store is enabled. A pulse at these pins establishes either
frame or multiframe boundaries for the transmit side. Should be tied low in
applications that do not use the transmit-side elastic store. The operation of this
signal is synchronous with TSYSCLK[8:1].
Transmit System Synchronization Out.
If configured as an output and the
transmit elastic store is enabled, an 8kHz pulse synchronous to the BPCLK1 will
be generated. This pulse in combination with BPCLK1 can be used as an IBO
master. TSSYNCIOn can be used as a source to RSYNCn and TSSYNCIOn of
another DS26518 or RSYNC and TSSYNC of other Dallas Semiconductor parts.
Note:
TSSYNCIO[8:1] are not used when
GTCR1
.528MD is set. When
GTCR1
.528MD is set, the TSSYNCIO pin (N13) is used.
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