參數(shù)資料
型號(hào)： ZR36504
廠商： Electronic Theatre Controls, Inc.
英文描述： Video & Audio Interface solution via USB
中文描述： 視頻
文件頁(yè)數(shù)： 12/74頁(yè)
文件大?。?/td> 298K
代理商： ZR36504
ZORAN Corporation
USBvision II Data Decoder
ZR36505 Data Sheet
November-99
Page 12 of 12
PIN DESCRIPTIONS
(continued)
PIN NUMBER
SIGNAL
I/O
DESCRIPTION
86
SCL/PWR0
I/O
Serial EEPROM clock signal, and LSbit of Device Power Code. If
an EEPROM was detected, then this pin is used as the EEPROM
clock output signal; otherwise its voltage (Vdd or GND) is used by
the ZR36504 as the LSbit of the Device Power Code for the USB
Device Descriptor. If EEPROM is detected, this pin is
temporarily set to '1' while in the Suspend position.
Serial EEPROM data signal, and EEPROM Detect pin. If
EEPROM is used, a 10K
pull-up resistor to Vdd should be
connected to this pin; otherwise it should be tied to GND. During
a Reset operation the ZR36504 samples the voltage level on this
pin, to determine if an external EEPROM exists. This pin has an
Open Drain output, and is temporarily set to high -z while in the
Suspend position.
MSbit of Device Power Code. The voltage level in this input
(Vdd or GND) is used by the ZR36504 as the MSbit of the Device
Power Code for the USB Device Descriptor. If an external
EEPROM exists, this input is ignored.
Power-On Reset input. This input is Schmitt-Trigger type, and it
is active low.
Serial control Enable Signaling. This pin has an Open Drain
output, and is 5v tolerant. It should be connected to an external
3.3-10K
pull-up resistor. This output is temporarily set to
high-z while in the Suspend or Power-Down position.
Camera-Control Data I/O (supports some commonly used serial
protocols). This pin has an Open Drain output, and is 5v
tolerant. It should be connected to an external 3.3-10K
pull-up
resistor. This output is temporarily set to high-z while in the
Suspend or Power-Down position.
Camera-Control Clock output (supports some commonly used
serial protocols). This pin has an Open Drain output, and is 5v
tolerant. It should be connected to an external 3.3-10K
pull-up
resistor. This output is temporarily set to high -z while in the
Suspend or Power-Down position.
Camera Power-Down control. This is an Open Drain 5v tolerant
output. The ZR36504 uses this output to switch On/Off the
camera and/or external circuit. Upon Reset operation to the
ZR36504, this output is set to high-z (=Off). It is also set to
high-z in the Suspend position, and remains high-z after Suspend
position is over.
USB Suspend mode control output. This pin is an Open Drain 5v
tolerant output. A Power-On Reset or a USB-Reset clear this
output to 0 volt; it is set to high -z when the ZR36504 enters the
Suspend mode, and cleared back to '0' upon detection of Resume
condition.
Capture Command input. This input has an internal pull-up to
Vdd. When forced to '0', host computer is automatically
informed that a video frame capture was requested by user. This
input is Schmitt-Trigger type.
This pin must be connected to GND.
87
SDA/EEPROM
I/O
88
PWR1
I
89
RESIN
I
91
SENS
O
92
IICDT
I/O
93
IICCK
O
94
PWR_DWN
O
95
SUSPND
O
96
CAPTRN
I
97
TEST2(VPD)
I
99
USB_VP
I/O
Universal-Serial-Bus Positive data line; This line should be
connected to an external pull-up resistor of 1.5K
. Refer to
Electrical Characteristics table for pin spec. This pin is kept
high-z while in the Suspend position.
Universal-Serial-Bus Negative data line. Refer to Electrical
Characteristics table for pin spec. This pin is kept high-z while
in the Suspend position.
100
USB_VM
I/O
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