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Supplement
WX Option
for the TMS818 PCIExpress Support
071-1646-01
*P071164601*
071164601
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TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
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WX (Wireless Extension) Option
Use the TMS817/818 PCIExpress Support Manual (071-1214--XX) along with
the following information when using the WX option product.
Overview
Preprocessor units with the WX option can support x1, x2, and x4 links. All
modes listed in the TMS817/818 PCIExpress Support Manual (071-1214--XX) in
Table 1--4 Preprocessor unit settings are the same for WX equipped preprocessor
units, except for the Ext Clock and Self Test settings. The standard TMS817/818
support package software supports the WX acquisitions with no modifications.
External Clocking
Self Test
The clocking options available in preprocessor units equipped with the WX
option differ from those available in the standard TMS817/818 product. Only
external clocking is available in WX supported products. See the TMS817/818
PCIExpress Support Manual (071-1214--XX) under External Clocking for
instructions on connecting the external clock input cable to the 100 MHz clock
on the target system.
The Self Test procedure under Troubleshooting is available in preprocessor units
equipped with the WX option. However, since there is no internal clock source
to drive the preprocessor unit when performing the self test procedure, the
external clock input cable must be attached to a 100 MHz clock source. The Data
Rate switch can be in either position (2.5 Gbps or 833 Mbps) to perform the self
test procedure.
WX Option for the TMS818 PCIExpress Support
1
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WX Option
Clocks
(1,2,3)
Preprocessor Unit
(Front Panel)
MODE WIDTH
CLK0
PN
CLK1
PN
CLK2
PN
MODE WIDTH
CLK0
PN
CLK1
CLK2
PN
PN
2.5 Gbps 833 Mbps
The Ext Clock switch has been replaced by the Data Rate switch on the front of
the preprocessor unit.
Data Rate Switch. The Data Rate switch (see Figure 1--1) is used to select the rate
that the preprocessor unit acquires data from the link. Select the appropriate
setting based on whether the link is operating at 2.5 Gbps or 833 Mbps. The
preprocessor unit operates in only one of these two settings and requires a
manual change of the switch position to acquire data at the other rate. Spread
spectrum clocking conditions are supported at both of these nominal frequency
settings. Preprocessor units equipped with the WX option do not support
frequency margin testing.
Clock input connector
(left of L00)
SELF TEST
SELF TEST
L00 L02 L04 L06 L08 L10 L12 L14
PN PN PN PN PN PN PN PN
PN
L01PNL03PNL05PNL07PNL09PNL11PNL13
L01 L03 L05 L07 L09 L11 L13 L15
833 Mbps2.5 Gbps
DataRate
SELF TEST
SELF TEST
L00 L02 L04 L06 L08 L10 L12 L14
PN PN PN PN PN PN PN PN
PN
L01PNL03PNL05PNL07PNL09PNL11PNL13
L01 L03 L05 L07 L09 L11 L13 L15
DataRate
PN
L15
PROBE POWE R
PN
L15
PROBE POWE R
TMS817 Probe Adapter
CLKNL00PNL01NPL02NPL03PNL04PNL05NPL06NPL07PNL08PNL09NPL10NPL11PNL12PNL13NPL14
CLKNL00PNL01NPL02NPL03PNL04PNL05NPL06NPL07PNL08PNL09NPL10NPL11PNL12PNL13NPL14
PN
P
PN P
CLKNL00PNL01NPL02NPL03PNL04PNL05NPL06NPL07PNL08PNL09NPL10NPL11PNL12PNL13NPL14NPL15
CLKNL00PNL01NPL02NPL03PNL04PNL05NPL06NPL07PNL08PNL09NPL10NPL11PNL12PNL13NPL14NPL15
PN P
PN P
MODE
MODE
8b DESCRAMBLE ON
8b DESCRAMBLE ON
0
0
8b DESCRAMBLE OFF
8b DESCRAMBLE OFF
1
1
10b DESCRAMBLE OFF
10b DESCRAMBLE OFF
2
2
RAWDATA
RAWDATA
3
3
SELF TEST
SELF TEST
4
4
WIDTH
WIDTH
0
0
1
1
2
2
3
3
4
4
UPSTREAM
DOWNSTREAM
X1
X1
X2
X2
X4
X4
X8
X8
X16
X16
L15
L15
NP
NP
CA
x
y
GGGGGGGG
x
CB
MIDBUSFOOTPRINT
CExyCG
CC
xy
GGGGGGGG
xy
CD
CIxCKxCMxCP
xyyyyy
xyyCHxyyyyy
CF
CJxCLxCN
xCQx
x
GGGGGGGG
GGGGGGGG
Data Rate
switch
Figure 1- 1: Adjust the preprocessor unit settings
CAUTION. To prevent damage to the preprocessor unit, you must power off the
preprocessor unit before changing any settings.
Table 1- 1: Preprocessor unit settings
TMS817 settings
Name
Data Rate
and connections
2.5 Gbps or 833 Mbps Same Use this switch to specify the data rate that
(Spread spectrum slide switch)
2
TMS818 settings
and connections
WX Option for the TMS818 PCIExpress Support
Description
the preprocessor unit acquires data from the
link.
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