CXD2548R
Pin
No.
Symbol
110 AVDD2
111 AVss2
112 Vss0
I/O
Description
R ch, analog power supply.
R ch, analog GND.
Digital GND.
Notes) • PCMD is a MSB first, two's complement output.
• GTOP is used to monitor the frame sync protection status. (High: sync protection window released.)
• XUGF is the frame sync obtained from the EFM signal, and negative pulse. It is the signal before
sync protection.
• XPLCK is the inverse of the EFM PLL clock. The PLL is designed so that the falling edge and the
EFM signal transition point coincide.
• The GFS signal goes high when the frame sync and the insertion timing match.
• RFCK is derived from the crystal accuracy, and has a cycle of 136µs (during normal speed).
• C2PO represents the data error status.
• XRAOF is generated when the 16K RAM exceeds the ±4F jitter margin.
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