ds26524 Maxim Integrated Products, Inc., ds26524 Datasheet - Page 27

• Manufacturer Part Number: ds26524
• Description: Ds26524 Quad T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

Figure 8-1. Backplane Clock Generation
The reference clock for the backplane clock generator can be as follows:
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External Master Clock. A prescaler can be used to generate T1 or E1 frequency.
External Reference Clock REFCLKIO. This allows for multiple DS26524s to use the backplane clock from
a common reference.
Internal LIU recovered RCLKs 1 to 4.
The clock generator can be used to generate BPCLK of 2.048MHz, 4.096MHz, 8.192MHz, or 16.384MHz
for the IBO.
If MCLK or RCLK are used as a reference, REFCLKIO can be used to provide a 2.048MHz or 1.544MHz
clock for external use.
MCLK
Scaler
PLL
Pre
REFCLKIO
MCLKT1
MCLKE1
RCLK1
RCLK2
RCLK3
RCLK4
BPREFSEL3:0
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BFREQSEL
BPCLK1:0
GEN
CLK
TSSYNCIO
REFCLKIO
BPCLK