Kontron AdvancedTCA AT8001 User Manual page 112

B.12 0A0BH: TELCLOCK3 (TELECOM CLOCK OPTION)
Address Action
DRVCLK3B DRVCLK3A
READ
DRVCLK3B DRVCLK3A
0xA0B
WRITE
Reset
DRVCLK3B
DRVCLK3A
TXREF1_SEL[2..0]
TXREF0_SEL[2..0]
The transmission frequency is selected according to the following table.
TXREFx_SEL[2..0]
000
001
010
011
100
101
110
111
* 8kHz or 16 MHz can be selected by bit 8K_16M in TelClock1 register.
** One frequency can be selected by bits E3DS3 and E3DS3OC3 in TelClock0 register.
D7 D6 D5
0 0
Enable MLVDS buffer to drive CLK3B to the backplane
This bit is forced to 0 until the IPMC authorizes it.
Enable MLVDS buffer to drive CLK3A to the backplane
This bit is forced to 0 until the IPMC authorizes it.
Transmission reference clock for AMC-B2 selection (see table below).
Transmission reference clock for AMC-B1 selection (see table below).
34.368/44.736MHz**(for E3/T3) or 8.592/11.184MHz
D4 D3
TXREF1_SEL[2..0]
TXREF1_SEL[2..0]
000
Transmission Clock Frequency
1.544 MHz (for T1/J1)
2.048 MHz (for E1)
4.096 MHz (for E1)
6.312 MHz (for J2)
8.192 MHz (for E1)
8 kHz/16.384 MHz* (for E1/T1/J1/J2)
19.44 MHz (for OC3, 12/STM-1, 4)
B-7
D2 D1 D0
TXREF0_SEL[2..0]
TXREF0_SEL[2..0]
000
AT8001 User's Guide