pef2256e Infineon Technologies Corporation, pef2256e Datasheet - Page 395

• Manufacturer Part Number: pef2256e
• Description: E1/t1/j1 Framer And Line Interface Component For Long- And Short-haul Applications
• Manufacturer: Infineon Technologies Corporation

Clock Mode Register 1 (Read/Write)
Value after reset: 00
CMR1
RS(1:0)
DCS
STF
DXJA
User’s Manual
Hardware Description
7
Select RCLK Source
These bits select the source of RCLK.
00 = Clock recovered from the line through the DPLL drives RCLK
01 = Clock recovered from the line through the DPLL drives RCLK
10 = Clock recovered from the line is de-jittered by DCO-R to drive a
11 = Clock recovered from the line is de-jittered by DCO-R to drive a
Disable Clock-Switching
In Slave mode (LIM0.MAS = 0) the DCO-R is synchronized on the
recovered route clock. In case of LOS the DCO-R switches
automatically to the clock sourced by port SYNC. Setting this bit
automatic switching from RCLK to SYNC is disabled.
Select TCLK Frequency
Only applicable if the pin function TCLK port XP(A to D) is selected by
PC(4:1).XPC(3:0) = 0011
clocked with TCLK.
0 =
1 =
Disable Internal Transmit Jitter Attenuation
Setting this bit disables the transmit jitter attenuation. Reading the
data out of the transmit elastic buffer and transmitting on XL1/2
(XDOP/N/XOID) is done with the clock provided on pin TCLK. In
transmit elastic buffer bypass mode the transmit clock is taken from
SCLKX, independent of this bit.
and in case of an active LOS alarm RCLK pin is set high.
2.048 MHz (SIC2.SSC2 = 0) or 1.544 MHz (SIC2.SSC2 = 1)
clock on RCLK.
8.192 MHz (SIC2.SSC2 = 0) or 6.176 MHz (SIC2.SSC2 = 1)
clock on RCLK.
1.544 MHz
6.176 MHz
RS1
RS0
395
B
. Data on XL1/2, XDOP/N, XOID are
DCS
STF
DXJA
DS1.1, 2003-10-23
T1/J1 Registers
PEF 2256 H/E
DXSS
0
FALC
(44)
®
56