TI380C30 Datasheet, PDF (14/78 Pages) Texas Instruments – INTEGRATED TOKEN-RING COMMPROCESSOR AND PHYSICAL-LAYER INTERFACE

TI380C30
INTEGRATED TOKEN-RING
COMMPROCESSOR AND PHYSICAL-LAYER INTERFACE
SPWS016A – NOVEMBER 1994 – REVISED JULY 1995
Pin Functions (Continued)
PIN
NAME
NO.
I/O/E†
DESCRIPTION
VDD
14
29
45
87
—
Positive-supply voltage for commprocessor output buffers. All VDD pins must be attached to the
common-system power-supply plane.
103
119
VDDA1
VDDA2
VDDA3
VDDD
VDDL
148
—
Positive-supply voltage for receiver circuits
129
—
Positive-supply voltage for data recovery PLL
123
Positive-supply voltage for the current-bias generator
157
—
Positive-supply voltage for physical layer output buffers
13
47
71
—
Positive-supply voltage for commprocessor digital logic. All VDDL pins must be attached to the
common-system power-supply plane.
VDDL1
134
146
—
Positive-supply voltage for physical layer digital logic. All VDDL pins must be attached to the
common-system power-supply plane.
VDDO
VDDP
VDDX
VSS
133
—
Positive-supply voltage for XTAL oscillator
138
—
Positive-supply voltage for phantom drive
145
—
Positive-supply voltage for transmit output
11
30
38
78
—
Ground connections for commprocessor output buffers. All VSS pins must be attached to system
ground plane.
104
VSSA1
VSSA2
VSSA3
VSSC
150
—
Ground reference for receiver circuits
127
—
Ground reference for data recovery PLL
125
Ground reference for the current-bias generator
10
21
57
—
Ground reference for commprocessor output buffers (clean ground). All VSSC pins must be attached
to the common-system ground plane.
102
VSSC1
VSSD
VSSL
160
Ground reference for physical layer output buffers
159
—
Ground reference for physical layer output buffers
22
46
88
—
Ground reference for digital logic. All VSSL pins must be attached to the common-system ground plane.
120
VSSL1
136,
153
—
Ground reference for internal logic
VSSO
VSSP
131
—
Ground reference for XTAL oscillator
140
—
Ground reference for phantom drive
VSSX
142
—
Ground reference for transmit output
Phantom-wire fault. WFLT provides an indication of the presence of a short or open circuit on PHOUTA
WFLT
167
O
or PHOUTB.
H = No fault
L = Open or short. The DC fault condition is present in the phantom-drive lines.
† _{I = input, O = output, E = provides external-component connection to the internal circuitry for tuning}
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