ESE
VITESSE
SEMICONDUCTOR CORPORATION
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
Gigabit Interconnect Chip
VSC7212
DC Characteristics
Parameters
Description
Min.
Typ
Max Units
Conditions
TTL Outputs (R(7:0), KCH, IDLE, ERR, RCLK/RCLKN, TBERR, PSDET, RSDET, WSO, REFOUT)
VOH
VOL
TTL output HIGH voltage
TTL output LOW voltage
2.4
—
—
—
V
V
IOH = -1.0mA
IOL = +1.0mA
—
0.5
When set to high-impedance
state through JTAG.
IOZ
TTL output leakage current
—
—
50
µA
TTL Inputs (TBC, T(7:0), C/D, WSEN, KCHAR, BIST, LBEN(1:0), TMODE(2:0), RMODE(1:0), DUAL, PTXEN,
RTXEN, RXP/R, RESETN, ENDEC, WSI, FLOCK, TRSTN, TDI, TDO, TMS, TCK)
VIH
VIL
IIH
TTL input HIGH voltage
TTL input LOW voltage
TTL input HIGH current
TTL input LOW current
2.0
0
—
—
50
—
—
0.8
V
V
—
—
500
µA
µA
VIN =2.4V
VIN =0.5V
IIL
-1000
PECL Inputs (REFCLKP/REFCLKN)
VDD
1.1
-
-
VDD
0.7
-
-
VIH
VIL
PECL input HIGH voltage
PECL input LOW voltage
—
—
V
V
VDD
2.0
VDD
1.5
IIH
IIL
PECL input HIGH current
PECL input LOW current
—
—
—
200
µA
µA
VIN =VIH(MAX)
VIN =VIL(MIN)
- 50
—
PECL input differential peak-to-
peak voltage swing
a
∆VIN
VCM
200
—
—
—
mV
V
| VIH(MIN) - VIL(MAX) |
PECL input common-mode
voltage
VDD
1.5
-
VDD
0.7
-
REFCLKP/REFCLKN internal
input bias voltage
VDD
2
/
VBIAS
—
—
PECL Outputs (PTX+/-, RTX+/-)
PECL differential peak-to-peak
output voltage swing
PECL Inputs (PRX+/-, RRX+/-)
| PTX+ - PTX- |
50Ω to VDD - 2.0V
∆VOUT
500
200
—
1100
1300
mV
mV
PECL differential peak-to-peak
input voltage swing
∆VIN
—
—
| PRX+ - PRX- |
Miscellaneous
VDD
PD
Power supply voltage
Power dissipation
3.14
3.47
1.2
V
3.3V + 5%
—
0.65
W
Maximum at 3.47V, at 1.3Gb.s,
typical at 3.3V, outputs open,
RTX disabled.
IDD
Supply current
—
200
345
mA
a. Single-ended measurement results are quoted here. Differential techniques used in Fibre Channel would yield values that are
twice the magnitude. See diagram below.
Tx+
∆ VOUT
Tx-
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800)-VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Page 26
G52268-0, Rev 3.3
04/10/01
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
