ISD-300A1 Cypress Semiconductor Corp, ISD-300A1 Datasheet - Page 8

• Manufacturer Part Number: ISD-300A1
• Description: IC USB 2.0 BRIDGE BULK 100LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of ISD-300A1

• Applications: USB 2.0 to ATA/ATAPI Bridge
• Interface: ATA, ATAPI
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 100-LQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1459

October 19, 2001
Pin Name
NRESET
XI
XO
TEST0 – TEST3
SCAN_EN
ATA_EN
SYS_IRQ
DISK_READY
NLOWPWR
NPWR500
VBUS_POWERED
VBUS_PWR_VALID
DRV_PWR_VALID
GPIO0 – GPIO9
NCART_DET
TQFP
Pin #
35
30
31
23, 24, 27, 28
22
33
98
99
52
92
3
4
2
38, 39, 40, 42, 44, 45,
46, 47, 48, 49
37
Dir
I
I
O
I
I
I
I
I
O
O
I
I
I
IO
I
Type
LVTTL, 5V
tolerant,
hysteresis
OSC input
OSC output
LVTTL, 5V
tolerant, internal
pull-down
resistor
LVTTL, 5V
tolerant, internal
pull-down
resistor
LVTTL, 5V
tolerant,
hysteresis
LVTTL, 5V
tolerant, internal
pull down
resistor,
hysteresis
LVTTL, 5V
tolerant,
hysteresis
12 mA LVTTL,
5V tolerant
12 mA LVTTL,
5V tolerant
LVTTL, 5V
tolerant,
hysteresis
LVTTL, 5V
tolerant,
hysteresis
LVTTL, 5V
tolerant,
hysteresis
12 mA LVTTL,
5V tolerant,
internal pull-
down resistor
LVTTL, 5V
tolerant,
hysteresis
3
Description
Active low. Asynchronous chip reset. To evoke
reset, NRESET must be held asserted for a
minimum of 1 ms after power is stable.
30 MHz crystal connection. 3.3V tolerant input.
30 MHz crystal connection.
Active high. ASIC fabrication and mfg. test
mode select. The TEST pins must be a no-
connect or set to 0x0 during normal operation.
Active high. ASIC test – scan chain enable.
SCAN_EN must be a no-connect or set to 0
during normal operation.
Active high. ATA interface enable. Allows ATA
bus sharing with other host devices.
Setting ATA_EN=1 enables the ATA interface
for normal operation. Disabling ATA_EN 3-
states (high-Z) the ATA interface and halts the
ATA interface state machine logic.
Active high. USB interrupt. SYS_IRQ controls
ISD-300A1 responses to USB interrupt pipe
requests. Setting SYS_IRQ = 1 enables the return
of interrupt data to the host.
Active high. Indicates device is powered and
ready to begin accepting ATA / ATAPI
commands.
Active low. Indicates when the ISD-300A1 is in
a low power state of operation. Open drain
during normal operation.
Active low. Indicates the USB host has enabled
use of VBUS power (USB configuration set to 1)
up to the requested amount in the USB descriptor
bMaxPower entry. VBUS powered devices must
condition power circuitry with the state of the
VBUS_POWERED signal for correct operation.
Open drain during normal operation.
Active high. Indicates the amount of VBUS
current the system is capable of consuming
(typically <= 100 mA OR <= 500 mA)
Active high. Indicates that VBUS power is
present.
Power / connection indication in hybrid power
systems (VBUS ISD-300A1, brick device).
Functionality and active polarity is controlled
with configuration data. Set DRV_PWR_VALID
= 0 if the functionality is not utilized.
General purpose IO pins. Configuration data
provides independent 3-state control for each
GPIO pin. The GPIO pins may be left as no-
connect if functionality is not utilized.
Active low. Media present indication. If remote
wakeup is enabled by the USB host, a state
change on this pin will cause the ISD-300A1 to
perform a USB remote wakeup event. Filtered
internally by ISD-300A1. Set NCART_DET = 1
if the functionality is not utilized.
ISD-300A1