e2v AT84CS001-EB, Руководство пользователя

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Application Information
4-4 AT84CS001-EB Evaluation Kit User Guide
0904C–BDC–09/07
4.4.4 RS, DRTYPE, DAEN,
BIST, CLKTYPE,
SLEEP, STAGG Seven jumpers are provided for the RS, DRTYPE, DAEN, BIST, CLKTYPE, SLEEP and
STAGG functions. The following table describes each of these functions.
Note: The BIST is comprised of a 10-bit sequence available on all four ports of the device (sets the AT84CS001 in 1:4 mode). The
sequence is as follows:
Cycle 0:
Port A = 1010101010
Port B = 1010101010
Port C = 0101010101
Port D = 1010101010
Cycle 1:
Port A = 0101010101
Port B = 0101010101
Port C = 1010101010
Port D = 0101010101
Table 4-1. Settings and Description of each DMUX Function
Function Description Jumper Settings
BIST
Built-In Self Test:
- Active: checker-board pattern available at the
device’s output
- Inactive: normal mode
BIST: jumper ON
No BIST: jumper OUT
CLKTYPE
Input clock mode:
- CLK= data valid on each rising edge of the
CLK/CLKN signal
- CLK/2 = data valid on both rising and falling edges of
the CLK/CLKN signal
CLK: jumper ON
CLK/2: jumper OUT
DAEN
Standalone Delay Cell Enable
- DAEN active: DAI/DAIN delay can be controlled via
DACTRL and output in DAO/DAON
- DAEN inactive: the standalone delay cell cannot be
used
DAEN active : jumper ON
DAEN inactive: jumper OUT
DRTYPE
Output clock mode:
- DR/2 = data valid on both rising and falling edges of
the DR/DRN signal
- DR = data valid on each rising edge of the DR/DRN
signal
DR/2: jumper ON
DR: jumper OUT
RS
Ratio selection:
- 1:2
- 1:4
Jumper ON
Jumper OUT
SLEEP
Sleep mode:
- Active: the device is in a partial standby mode
- Inactive: normal mode
SLEEP: jumper ON
Inactive: jumper OUT
STAGG
Simultaneous or staggered output mode:
- STAGG acitve: staggered output data
- Inactive: simultaneous output data
STAGG: jumper ON
Inactive: jumper OUT