IAR-KSK-IMX25 Freescale Semiconductor, IAR-KSK-IMX25 Datasheet - Page 123

• Manufacturer Part Number: IAR-KSK-IMX25
• Description: KIT DEVELOPMENT I.MX257, ARM926
• Manufacturer: Freescale Semiconductor
• Series: i.MX25r
• Type: MCUr

Specifications of IAR-KSK-IMX25

• Contents: Board, Cables, CD, Debugger, Power Supply
• Processor To Be Evaluated: I.MX257
• Processor Series: i.MX25
• Data Bus Width: 16 bit
• Interface Type: UART, JTAG, USB, Ethernet, SD/MMC
• Core: ARM926EJ-S
• Silicon Manufacturer: Freescale
• Core Architecture: ARM
• Core Sub-architecture: ARM9
• Silicon Core Number: I.MX2
• Silicon Family Name: I.MX25
• Mcu Supported Families: I.MX25
• For Use With/related Products: i.MX25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 96
Table 97
Freescale Semiconductor
US30
US31
US32
US33
US34
US35
US36
US37
US38
US39
US40
US41
Receive
No.
USB_TXOE_B
USB_VP1
USB_VM1
shows the timing specifications for USB in VP_VM unidirectional mode.
USB_RCV
shows the USB receive waveform in VP_VM unidirectional mode diagram.
Tx high overlap
Rx rise/fall time
Rx rise/fall time
Tx rise/fall time
Tx rise/fall time
Tx rise/fall time
Tx low overlap
Disable delay
Tx duty cycle
Enable delay
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 8
Parameter
Table 97. USB Timing Specifications in VP_VM Unidirectional Mode
Rx skew
Rx skew
Figure 96. USB Receive Waveform in VP_VM Unidirectional Mode
US36
US41
USB_SE0_VM
USB_TXOE_B
USB_SE0_VM
USB_SE0_VM
USB_SE0_VM
USB_SE0_VM
USB_DAT_VP
USB_DAT_VP
USB_DAT_VP
USB_DAT_VP
USB_VM1
USB_RCV
USB_VP1
USB_VP1
US40
Signal
Direction
Out
Out
Out
Out
Out
Out
Out
Out
In
In
In
In
US38
US39
Min.
49.0
–4.0
–6.0
0.0
—
—
—
—
—
—
—
—
Max.
51.0
10.0
+4.0
+2.0
5.0
5.0
5.0
0.0
8.0
3.0
3.0
—
US37
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
Reference Signal
USB_TXOE_B
USB_TXOE_B
USB_SE0_VM
USB_DAT_VP
USB_DAT_VP
USB_DAT_VP
Conditions/
50 pF
50 pF
35 pF
35 pF
50 pF
—
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