Datasheet
MAX3353E
interrupt edge, and interrupt latch address maps. Bit
configuration is shown in Tables 9, 10, and 11.
Manufacturer and ID Register Address Map
The manufacturer and ID registers are read-only regis-
ters (Table 12).
External Capacitors
Five external capacitors are recommended for proper
operation. Bypass V
L
and V
TRM
to GND with a 0.1µF
ceramic capacitor. Bypass V
BUS
and V
CC
to GND with a
1µF low-ESR ceramic capacitor. For the internal charge
pump, use a 0.1µF ceramic capacitor between C+ and C-.
USB On-the-Go Charge Pump with Switchable
Pullup/Pulldown Resistors
14 ______________________________________________________________________________________
Table 3. Control Register Address Map
POWER-UP REGISTER STATUS
REGISTER ADDRESS
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
Control 1 10h 00000000
Control 2 11h 00000001
Table 4. Control Register 1 (10h)
BIT
NUMBER
SYMBOL OPERATION
0 — Not used
1 IRQ_MODE
Interrupt pin open-drain/push-pull:
0 = open drain
1 = push/pull
2
BDISC_
ACONN
0 = disable
1 = enable
3 — Not used
4 DP_PULLUP
D+ pullup (high priority)
0 = D+ pullup unconnected
1 = D+ pullup connected
5 DM_PULLUP
D- pullup:
0 = D- pullup unconnected
1 = D- pullup connected
6
DP_
PULLDWN
D+ pulldown:
0 = D+ pulldown unconnected
1 = D+ pulldown connected
7
DM_
PULLDWN
D- pulldown:
0 = D- pulldown unconnected
1 = D- pulldown connected
Table 5. Control Register 2 (11h)
BIT
NUMBER
SYMBOL OPERATION
0 SDWN
Puts part in shutdown mode:
0 = operating
1 = shutdown mode
1V
BUS_CHG1
Charge V
BUS
through a current
generator for 105ms:
0 = current generator OFF
1 = current generator ON
(automatically turned off after
105ms)
2V
BUS_CHG2
Charge V
BUS
through a current
generator:
0 = current generator OFF
1 = current generator ON
3V
BUS_DRV
Drive V
BUS
through charge pump
0 = V
BUS
not driven
1 = V
BUS
connected to the charge
pump
4V
BUS_DISCHG
Discharge V
BUS
through a resistor:
0 = Resistor disconnected
1 = Resistor connected
5 — Not used
6 — Not used
7 — Not used
Table 6. Status Register Address Map
POWER-UP REGISTER STATUS
REGISTER ADDRESS
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
Status 13h 0 0 0 — — — — —
(—) = don’t know