ISP1105 Datasheet, PDF (6/24 Pages) NXP Semiconductors – Advanced Universal Serial Bus transceivers

Philips Semiconductors
ISP1105/1106/1107
Advanced USB transceivers
Table 3: Pin description…continued
Symbol^[1] Pin
Type
ISP1105 ISP1106/7 ISP1106/7
HBCC16 HBCC16 TSSOP16
V_reg(3.3)
13
13
15
-
V_CC(5.0)
14
14
16
-
V_pu(3.3)
15
15
1
-
Description
Internal regulator option: regulated supply voltage output
(3.0 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 operation. (3.3 V ±10%)
Internal regulator option: supply voltage input
(4.0 to 5.5 V); can be connected directly to USB supply
V_BUS
Regulator bypass option: connect to V_reg(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 16
16
2
I
SOFTCON = LOW — V_pu(3.3) floating (high impedance);
ensures zero pull-up current
SOFTCON = HIGH — V_pu(3.3) = 3.3 V; internally connected
to V_reg(3.3)
software controlled USB connection input; a HIGH level
applies 3.3 V to pin V_pu(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
[1] Symbol names with an overscore (e.g. NAME) indicate active LOW signals.
[2] Down bonded to the exposed diepad.
7. Functional description
7.1 Function selection
Table 4: Function table
SUSPND OE
(D+, D−)
L
L
driving &
receiving
L
H
receiving^[1]
H
L
driving
RCV
active
active
inactive^[2]
H
H
high-Z^[1] inactive^[2]
VP/VM
active
active
active
active
Function
normal driving
(differential receiver active)
receiving
driving during ‘suspend’^[3]
(differential receiver inactive)
low-power state
[1] Signal levels on (D+, D−) are determined by other USB devices and external pull-up/down resistors.
[2] In ‘suspend’ mode (SUSPND = HIGH) the differential receiver is inactive and output RCV is always
LOW. Out-of-suspend (‘K’) signalling is detected via the single-ended receivers VP and VM.
[3] During suspend, the slew-rate control circuit of low-speed operation is disabled. The (D+, D−) lines
are still driven to their intended states, without slew-rate control. This is permitted because driving
during suspend is used to signal remote wake-up by driving a ‘K’ signal (one transition from idle to
‘K’ state) for a period of 1 to 15 ms.
9397 750 08872
Product data
Rev. 06 — 30 November 2001
© Koninklijke Philips Electronics N.V. 2001. All rights reserved.
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