UM1551 Datasheet, PDF (15/17 Pages) STMicroelectronics – This demonstration board allows the easy measurement

UM1551
STCC2540 demonstration board
Jumper selectors
SW2 to SW4: operating mode (CTLx)
1 - 2 = 1, 2 - 3 = 0 (See Table 5).
Table 5. Truth table
SW4
(CTL1)
SW3
(CTL2)
SW2
(CTL3)
Mode
Note
0
0
0
Power and data switch turned off Continuous V_OUT discharge
1
1
0
S0 SDP
No V_OUT discharge pulse on
0
1
0
S3 SDP with remote wakeup
transition 110 <-> 010
1
1
1
S0 CDP
No V_OUT discharge pulse on
transition 111 <-> 011 for low-
S3 CDP with remote wakeup for _{speed devices}
0
1
1
low-speed devices / DCP
autodetect for full-speed and
Automatic switch to DCP
autodetect mode also after
high-speed devices
device detach
0
0
1
DCP Autodetect
1
0
0
DCP BC1.2
1
0
1
DCP divider
Note:
The V_OUT discharge pulse is also intentionally omitted for transitions 010 <-> 011, 110 <->
011.
SW5: power and data switch enable (EN)
1 - 2 = 1, 2 - 3 = 0
1 = enabled, 0 = disabled, continuous V_OUT discharge
SW1: attach detector enable (ATTACH_EN)
This selector has no effect for the STCC2540 device.
Connector
Note:
Connector J6
Control connector (CANNON15) to set the STCC2540 inputs remotely and also to remotely
sense the status of its indication outputs.
If this connector is used, the jumper caps from SW1 to SW5 must be removed to allow
remote setting of STCC2540 inputs. No pull-ups/pull-downs are provided on EN and CTLx
inputs!
DocID023275 Rev 1
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