DS2155LC1 Maxim Integrated, DS2155LC1 Datasheet - Page 22
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DS2155LC1
Manufacturer Part Number
DS2155LC1
Description
Network Controller & Processor ICs
Manufacturer
Maxim Integrated
Datasheet
1.DS2155GNB.pdf
(238 pages)
- Current page: 22 of 238
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Signal Name:
Signal Description:
Signal Type:
A user-programmable output that can be forced high or low during any of the 24 T1 or 32 E1 channels.
Synchronous with RCLK when the receive-side elastic store is disabled. Synchronous with RSYSCLK when the
receive-side elastic store is enabled. Useful for blocking clocks to a serial UART or LAPD controller in
applications where not all channels are used such as fractional service, 384kbps service, 768kbps, or ISDN–PRI.
Also useful for locating individual channels in drop-and-insert applications, for external per-channel loopback, and
for per-channel conditioning. See Section
Signal Name:
Signal Description:
Signal Type:
Received NRZ serial data. Updated on rising edges of RCLK when the receive-side elastic store is disabled.
Updated on the rising edges of RSYSCLK when the receive-side elastic store is enabled.
Signal Name:
Signal Description:
Signal Type:
An extracted pulse, one RCLK wide, is output at this pin that identifies either frame (IOCR1.5 = 0) or multiframe
(IOCR1.5 = 1) boundaries. If set to output frame boundaries, then through IOCR1.6, RSYNC can also be set to
output double-wide pulses on signaling frames in T1 mode. If the receive-side elastic store is enabled, then this pin
can be enabled to be an input through IOCR1.4, at which a frame or multiframe boundary pulse is applied.
Signal Name:
Signal Description:
Signal Type:
An extracted 8kHz pulse, one RCLK wide, is output at this pin that identifies frame boundaries.
Signal Name:
Signal Description:
Signal Type:
An extracted pulse, one RCLK wide (elastic store disabled) or one RSYSCLK wide (elastic store enabled), is
output at this pin that identifies multiframe boundaries.
Signal Name:
Signal Description:
Signal Type:
Updated on the rising edge of RCLK with the data out of the receive-side framer.
Signal Name:
Signal Description:
Signal Type:
1.544MHz, 2.048MHz, 4.096MHz, or 8.192MHz clock. Only used when the receive-side elastic store function is
enabled. Should be connected low in applications that do not use the receive-side elastic store. See Section
details on 4.096MHz and 8.192MHz operation using the IBO.
Signal Name:
Signal Description:
Signal Type:
Outputs signaling bits in a PCM format. Updated on rising edges of RCLK when the receive-side elastic store is
disabled. Updated on the rising edges of RSYSCLK when the receive-side elastic store is enabled.
RCHBLK
Receive Channel Block
Output
RSER
Receive Serial Data
Output
RSYNC
Receive Sync
Input/Output
RFSYNC
Receive Frame Sync
Output
RMSYNC
Receive Multiframe Sync
Output
RDATA
Receive Data
Output
RSYSCLK
Receive System Clock
Input
RSIG
Receive Signaling Output
Output
18
for details.
22 of 238
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