Rainbow Electronics DS26519 - Manual (Page 21)

DS26519 16-Port T1/E1/J1 Transceiver
21 of 310
NAME PIN TYPE FUNCTION
ANALOG RECEIVE
RTIP1 B4
RTIP2 T2
RTIP3 U1
RTIP4 Y2
RTIP5 AA20
RTIP6 J21
RTIP7 G21
RTIP8 C21
RTIP9 AB13
RTIP10 AB15
RTIP11 AB17
RTIP12 M22
RTIP13 A11
RTIP14 A9
RTIP15 B6
RTIP16 N1
Analog
Input
Receive Bipolar Tip for Transceiver 1 to 16. The differential inputs of RTIPn
and RRINGn can provide partially internal impedance matching for E1 75
Ω, E1
120
Ω, T1 100Ω, or J1 110Ω. The user can turn off internal termination via the
LIU Receive Impedance and Sensitivity Monitor register ( LRISMR ).
RRING1 A4
RRING2 R2
RRING3 V2
RRING4 Y1
RRING5 AB20
RRING6 H22
RRING7 F21
RRING8 D22
RRING9 AB12
RRING10 AA15
RRING11 AA18
RRING12 N22
RRING13 A12
RRING14 B9
RRING15 A6
RRING16 N2
Analog
Input
Receive Bipolar Ring for Transceiver 1 to 16. The differential inputs of RTIPn
and RRINGn can provide partially internal impedance matching for E1 75
Ω, E1
120
Ω, T1 100Ω, or J1 110Ω. The user has the option of turning off internal
termination via the LIU Receive Impedance and Sensitivity Monitor register
(
LRISMR ).
RTIPE1 A3
RTIPE2 R1
RTIPE3 V1
RTIPE4 AA1
RTIPE5 AB21
RTIPE6 J22
RTIPE7 F22
RTIPE8 C22
RTIPE9 AA13
RTIPE10 AA16
RTIPE11 AB18
RTIPE12 L22
RTIPE13 A13
RTIPE14 B8
RTIPE15 A7
RTIPE16 M1
Analog
Input
Receive Tip External Termination 1 to 16. These pins are used with RTIPn to
provide the ability to switch out the external termination resistor, thereby
providing high impedance to the line. Useful for redundancy applications.
RESREF E5 Input
Resistor Reference. This pin is used to calibrate the internal impedance match
resistors of the receive LIUs. This pin should be tied to V
SS
through a 10k
Ω ±1%
resistor.