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XRT8001 Datasheet, PDF (17/48 Pages) Exar Corporation – WAN Clock for T1 and E1 Systems
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XRT8001
D[4:1]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Mode
Forward/Master
Forward/Master
Forward/Master
Reverse/Master
Forward/Master
Forward/Master
Forward/Master
Reverse/Master
E1 to T1 – Forward/Master
Fract. T1/E1 Reverse/Master
Fract. T1/E1 Reverse/Master
Fract. T1/E1 Reverse/Master
Fract. T1/E1 Reverse/Master
High Speed - Reverse
Reserved
Reserved
Input Frequency (at
the FIN input)
N x 1.544MHz
N x 1.544MHz
N x 1.544MHz
56kHz
N x 2.048MHz
N x 2.048MHz
N x 2.048MHz
64kHz
Q x 2.048MHz
P x 56kHz
P x 56kHz
P x 64kHz
P x 64kHz
64 kHz
Reserved
Reserved
CLK1 Output
Signal
K x 56kHz
K x 56kHz
K x 64kHz
1.544MHz
K x 56kHz
K x 56kHz
K x 64kHz
1.544MHz
1.544MHz
1.544MHz
1.544MHz
2.048MHz
2.048MHz
M x 2.048MHz
Reserved
Reserved
CLK2 Output
Signal
K x 56kHz
K x 64kHz
K x 64kHz
2.048MHz
K x 56kHz
K x 64kHz
K x 64kHz
2.048MHz
1.544MHz
2.048MHz
1.544MHz
1.544MHz
2.048MHz
M x 2.048MHz
Reserved
Reserved
Table 1. Relationship between the value of “D4 – D1 (within Command Register CR0)
and the Operating Modes of the XRT8001 WAN Clock - Master Modes
D[4:1]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Mode
Forward/Slave
Forward/Slave
Forward/Slave
Reverse/Slave
Forward/Slave
Forward/Slave
Forward/Slave
Reverse/Slave
Reverse/Slave
Reverse/Slave
Reverse/Slave
Reverse/Slave
Reverse/Slave
High Speed – Reverse
Reserved
Reserved
Input Frequency (at
the FIN input)
8kHz
8kHz
8kHz
8kHz
8kHz
8kHz
8kHz
8kHz
8kHz
8kHz
8kHz
8kHz
8kHz
64kHz
Reserved
Reserved
CLK1 Output
Signal
K x 56kHz
K x 56kHz
K x 64kHz
1.544MHz
K x 56kHz
K x 56kHz
K x 64kHz
1.544MHz
K x 56KHz
1.544MHz
1.544MHz
2.048MHz
2.048MHz
M x 2.048MHz
Reserved
Reserved
CLK2 Output
Signal
K x 56kHz
K x 64kHz
K x 64kHz
2.048MHz
K x 56kHz
K x 64kHz
K x 64kHz
2.048MHz
K x 64KHz
2.048MHz
1.554MHz
1.544MHz
2.048MHz
M x 2.048MHz
Reserved
Reserved
Table 2. Relationship between the value of “D4 – D1" (within Command Register CR0) and
the Operating Modes of the XRT8001 WAN Clock – Slave Modes
Rev. 1.01
17
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