VSC7212 Datasheet, PDF (26/34 Pages) Vitesse Semiconductor Corporation – Gigabit Interconnect Chip

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Gigabit Interconnect Chip
Preliminary Data Sheet
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)
V_OH
TTL output HIGH voltage
2.4
—
—
V I_OH = -1.0mA
V_OL
TTL output LOW voltage
—
—
0.5
V I_OL = +1.0mA
I_OZ
TTL output leakage current
—
—
50
µA
When set to high-impedance
state through JTAG.
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)
V_IH
TTL input HIGH voltage
V_IL
TTL input LOW voltage
I_IH
TTL input HIGH current
I_IL
TTL input LOW current
PECL Inputs (REFCLKP/REFCLKN)
2.0
—
—
V
0
—
0.8
V
—
50
500
µA V_IN =2.4V
—
— -1000 µA V_IN =0.5V
V_IH
PECL input HIGH voltage
V_DD -
1.1
—
V_DD -
0.7
V
V_IL
PECL input LOW voltage
V_DD -
2.0
—
V_DD -
1.5
V
I_IH
I_IL
∆V_IN
PECL input HIGH current
—
—
200
µA
V_IN =V_IH(MAX)
PECL input LOW current
- 50
—
—
µA
V_IN =V_IL(MIN)
PECL input differential peak-to-
peak voltage swing
200
—
—
mV | V_IH(MIN) - V_IL(MAX) |^a
V_CM
PECL input common-mode
voltage
V_DD -
1.5
—
V_DD -
0.7
V
V_BIAS
REFCLKP/REFCLKN internal
input bias voltage
—
V_DD/
2
—
PECL Outputs (PTX+/-, RTX+/-)
∆V_OUT
PECL differential peak-to-peak
output voltage swing
500
PECL Inputs (PRX+/-, RRX+/-)
—
1100
mV
| PTX+ - PTX- |
50Ω to V_DD - 2.0V
∆V_IN
PECL differential peak-to-peak
input voltage swing
200
— 1300 mV | PRX+ - PRX- |
Miscellaneous
V_DD
Power supply voltage
P_D
Power dissipation
I_DD
Supply current
3.14
— 3.47
V 3.3V + 5%
— 0.65 1.2
W Maximum at 3.47V, at 1.3Gb.s,
typical at 3.3V, outputs open,
—
200
345
mA _{RTX disabled.}
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⁺
∆ V_OUT
Tx^-
Page 26
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800)-VITESSE • FAX: [phone] • Email: [e-mail]
Internet: www.vitesse.com
G52268-0, Rev 3.3
04/10/01