1. Configuration and local monitoring
ROD readout: 16 data lines to G-link pins, 4 towers each
LVDS serial real-time data to CP & JEP
64 Analogue trigger-tower signals

4. PPM Multi-Chip Module ASIC LCD card To CP Analogue input card To JEP
Pedestals
ASIC
Multi-Chip Module
PPM
Twisted pair
Analogue input card
LVDS fan-out/ cable- driver
Add
Discr.
DAC 8-bit
Threshold
Pedestal offset
FADC 10-bit
40 MHz clock
Strobe
PHOS4 0–25 ns
No. of BC’s delay
FIFO
Bunch- crossing ID logic and Look-up table 10 1
FADC mem.
LUT mem.
Histogram/ Playback mem. 8 3
BC- mux
Tower 2x2 sum
LVDS 480 MBaud
Readout to DAQ
Serialisation
To CP
To JEP
LCD card