G56047-0, Rev 1.1
STS-192/STM-64 SONET/SDH Transceiver
VSC9116
TOAP192
JTAG TAP
BIMX192
TISP
4x
x4
4x 32
4x 32
4x 32
128
128
128
TSOP192
TLOP192
TFPA48
TISOP48
x4
TLIF192
4x
TDIF192
TSC
TDCSC
SSTB192
CLKGEN192
x4
BERM192
RLOP192
4x 32
4x 32
128
128
128
RISOP48
RSOP192
BIDX192
x4
4x
RDIF192
RLIF192
CPU
RISP
ROAP192
Figure¬1.13. Loopback Configurations in VSC9116
1.6 Pin Definitions
,Qꢀ7DEOHꢀꢂꢈꢅꢀDOOꢀ96&ꢁꢂꢂꢃꢀSLQVꢀDUHꢀGHVFULEHGꢈꢀ5HIHUHQFHVꢀDUHꢀPDGHꢀWRꢀWKHꢀ,ꢆ2ꢀEXIIHUꢀW\SHV
GHVFULEHGꢀLQꢀ7DEOHꢀꢂꢈꢂꢈ
Table¬1.1. I/O Buffer Type Description
Buffer Type
TTL-tt-dd-pp-rr
Description
Input
Output
TTL buffer tt = I:
tt = O:
tt = IO:
Bidirectional
dd = ST: Schmidt Triggered
dd = TS: Tri-State
dd = OD: Open Drain
pp = PU: Pull-Up Resistor
pp = PD: Pull-Down Resistor
rr =
Output Resistance (Ohm)
LVDS-tt
Low Voltage Differential Buffer
tt = I:
Input
tt = O:
Output
All LVDS input buffer pairs are terminated with 100Ω on-chip.
Page 26
1.0 Product Description
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
