ISD-200 Datasheet, PDF (11/64 Pages) List of Unclassifed Manufacturers – USB Mass Storage Class Bulk-Only Specification Compliant

ISD-200 ASIC Datasheet
Pin Name
DPLS, DMNS
USB_ENUM
LED
NPWR100
BUS_POWER
VDD18
VDD33
VSS
TQFP
Dir
Pin #
44, 43
IO
46
O
33
O
22
O
41
I
13, 32, 36, 59
4, 23, 47, 52
9, 17, 26, 34, 42, 45, 57,
61
Type
Description
USB Transceiver
4 mA TTL 3.3V
12 mA TTL 3.3V
4 mA TTL 3.3V
TTL, pull up
USB differential data
USB enumeration control. Power source / sink
for 1.5K pull-up resistor on USB Bus DPLS
signal.
USB status led control output. Flashes if the USB
configuration is set to 0, on solid if USB
configuration is set other than 0, and off if USB
Bus is suspended. Active low, 3-state to hi-Z off
Indicates USB Bus can supply the lesser value of
100 mA or the USB Descriptor bMaxPower
entry. USB BUS powered devices must condition
power circuitry with the state of the
BUS_POWER signal for correct operation.
Active hi, 3-state to hi-Z off
Indicates the source of the ATA / ATAPI device
power. (See Errata #6)
BUS_POWER=1 indicates USB Bus powered.
BUS_POWER=0 indicates self power.
100K internal pull up resistor
1.8V Core supply
3.3V IO ring supply
Ground
Table 1 – Pin Descriptions
In-System Design Confidential
9