Aiwa XR-MDS7 EZ, Service Manual

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• 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 is negative pulse. It is the signal before sync
protection.
• XPCK 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 136
µ
s.
• C2PO reqresents the data error status.
• XROF is generated when the 16K RAM exceeds the
±
4F jitter margin.
Monitor Pin Output Combinations
Command bit
0 0 XUGF XPCK GFS C2PO
0 1 MNT1 MNT0 MNT3 C2PO
1 0 RFCK XPCK XROF GTOP
NOTES
MTSL1 MTSL0
Output Data