ISP1105/1106
Advanced USB transceivers
Table 3.
Pin description …continued
Symbol[1]
Pin
Type Description
ISP1105
ISP1106
BSTM WTS, DHTM WTS
WTM
VPO/VO
VPO
11
-
11
-
-
13
-
-
11
-
I
I
-
driver data input (CMOS level with respect to VCC(I/O), Schmitt trigger);
see Table 5 and Table 6
input pad; push pull; CMOS
VO
-
-
VMO/FSE0
VMO
12
-
12
-
-
-
driver data input (CMOS level with respect to VCC(I/O), Schmitt trigger);
see Table 5 and Table 6
14
-
12
-
input pad; push pull; CMOS
FSE0
-
-
Vreg(3.3)
13
13
15
13
internal regulator option: regulated supply voltage output
(3.0 V to 3.6 V) during 5 V operation; a decoupling capacitor of at least
0.1 μF is required
regulator bypass option: used as a supply voltage input for
3.3 V ± 10 % operation
VCC(5.0)
14
15
14
15
16
1
14
15
-
-
internal regulator option: supply voltage input (4.0 V to 5.5 V); can
be connected directly to USB supply VBUS
regulator bypass option: connect to Vreg(3.3)
Vpu(3.3)
pull-up supply voltage (3.3 V ± 10 %); connect an external 1.5 kΩ
resistor on D+ (full-speed) or D− (low-speed); pin function is controlled
by input SOFTCON
SOFTCON = LOW — Vpu(3.3) floating (high impedance); ensures zero
pull-up current
SOFTCON = HIGH — Vpu(3.3) = 3.3 V; internally connected to Vreg(3.3)
SOFTCON
16
16
2
16
I
software controlled USB connection input; a HIGH level applies 3.3 V
to pin Vpu(3.3), which is connected to an external 1.5 kΩ pull-up
resistor; this allows USB connect/disconnect signalling to be controlled
by software
input pad; push pull; CMOS
[1] Symbol names with an overscore (e.g. NAME) indicate active LOW signals.
[2] ISP1105: ground terminal is connected to the exposed die pad (heat sink).
ISP1105_1106_10
© ST-ERICSSON 2009. All rights reserved.
Product data sheet
Rev. 10 — 28 September 2009
6 of 25
ERICSSON [ ERICSSON ]
