DS21348

Manufacturer Part NumberDS21348
Description3.3V E1/T1/J1 Line Interface
ManufacturerDallas Semiconducotr
DS21348 datasheet
 


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TRANSMIT LOGIC Figure 3-3
CCR1.6
OR
Gate
CCR3.1
1
BPV
mux
To
Insert
Remote
Loopback
0
Routed to
All Blocks
4. PIN DESCRIPTION
The DS21348 can be controlled in a parallel port mode, a serial port mode, or a hardware mode (Table
4-1, 4-2, and 4-3). The parallel and serial port modes are described in Section 3, and the Hardware Mode
is described below.
BUS INTERFACE SELECTION Table 4-1
BIS1
BIS0
0
0
0
0
0
1
0
1
1
0
1
1
CCR2.2
CCR3.0
B8ZS/
Logic
HDB3
Error
Coder
Insert
0
0
mux
1
mux
OR
Gate
RCLK
1
AND
CCR1.1
Gate
CCR1.2
CCR1.0
To LOTC Output Pin
PBTS
0
Muxed Intel
1
Muxed Motorola
0
Nonmuxed Intel
1
Nonmuxed Motorola
-
Serial Port
-
Hardware
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CCR3.3
CCR3.4
PRBS Generator
Loop Code Generator
mux
OR
Gate
Clock
Invert
JACLK
(derived
CCR2.1
from
MCLK)
Loss Of Transmit
Clock Detect
tx bd
SR.5
MODE
TPOS
TNEG
TCLK