vsc870 Vitesse Semiconductor Corp, vsc870 Datasheet - Page 34

• Manufacturer Part Number: vsc870
• Description: High Performance Serial Backplane Transceiver
• Manufacturer: Vitesse Semiconductor Corp

Page 34
High Performance Serial
Backplane Transceiver
Table 3: Receive Data Output Timing Table
Table 4: Misc. Timing Parameters
RXWA, RXOK, TXOK, ACK/RCLK
Parameter
Parameter
T
F
J
T
T
T
T
T
T
T
REFCLK
REFCLK
REFCLK
T
T
T
T
T
T
SKEW
SKEW
T
T
DEL1
DEL1
DEL2
DEL2
DEL2
CRQ
RXOUT[31:0], RXTYP[1:0],
DEL
DM
WS
PM
CM
LT
CS
RFM, REN,RTM/TCLK
WCLK to RXOUT[31:0], RXTYP[1:0], RXWA, ACK/
RCLK, RXOK, TXOK, OOS delay
WCLK to RFM, REN, RTM/TCLK delay
WSIN to RXOUT[31:0], RXTYP[1:0], RXOK, TXOK,
OOS delay
WSIN to RFM, REN, RTM delay
WSIN to RXWA, ACK/RCLK
Output data skew with respect to WCLK
WCLK to TCLK delay
WCLK to WCLK skew using parallel transceivers
CMU and CRU lock time
Word synchronization time
Cell synchronization time per transceiver
Data latency in packet mode with zero serial trace delay
Data latency in cell mode with zero serial trace delay
Data latency in direct mode with zero serial trace delay
CRQ to REN delay time with zero serial trace delay
Reference (word) clock period
Reference clock frequency stability
Reference clock input jitter
WCLK
WSIN
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Figure 18: Receive Data Output Timing Diagram
Tel: (800) VITESSE • FAX: [phone] • Email: [e-mail]
VITESSE
SEMICONDUCTOR CORPORATION
Description
Description
Internet: www.vitesse.com
Min
Min
0.0
2.0
2.5
1.5
0.5
0.7
T
DEL2
T
DEL1
Typ
Typ
16
(# words
in cell)
Max
Max
11.5
100
4.5
7.0
9.0
7.5
1.5
5.5
3.0
30
12
50
8
6
8
7
T
SKEW
2
VSC870
Data Sheet
WCLKs
WCLKs
WCLKs
WCLKs
WCLKs
G52190-0, Rev 4.1
ps RMS
Units
Units
ppm
ns
ns
ns
ns
ns
ns
ns
ns
us
us
ns
01/05/01