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Chapter 4: Theory of operation
55
H.110 telephony interface
The EPC-3307 incorporates an H.110 Computer Telephone interface on the cPCI
J4 connector, as defined by PICMG. The interface to the H.110 bus is provided by
the Lucent T8105 Time Slot Interchanger (TSI).
EPC-3307 CT architecture
The T8105 is an ISA device. It is I/O mapped at 0x188. The T8105 uses indirect
addressing, so it consumes only four I/O addresses:
The Lucent T8105 can be configured to transfer serial streams between any of
these sources:
•
H.110 Bus on J4
•
PMC J13
The PMC site on the EPC-3307 is pin-compatible with the RadiSys ARTIC 4-port
T1/E1//J1 DSP PMC. Rear I/O is available for the PMC on J14.
Table 4-2. T8105 summary
Item
Description
Package
217-pin BGA
Power
1.7 Watts max
Height
2.33mm max
Dim
23mm square
Features
Local TDM streams
↑↓
H.110
512 Channels
Table 4-3. T8105 I/O map
I/O address
Reg
Description
188h
MCR
Master Control and Status
189h
LAR
Lower Address register
18Ah
AMR
Address Mode register
18Bh
IDR
Indirect Data Register
Figure 4-2. EPC-3307 CT architecture
PMC AI13
H.110
T8105
J4
Local serial
eight pairs
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