PCIMX515CJM6C datasheet(129/184 Pages) FREESCALE

129 / 184 page

Electrical Characteristics

i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 1

Freescale Semiconductor

129

Preliminary—Subject to Change Without Notice

3.7.17.1.1

USB DAT_SE0 Bi-Directional Mode

Figure 93. USB Transmit Waveform in DAT_SE0 Bi-Directional Mode

rx_rcv

data(6)

Out

Differential receive data from D+/D–

Reserved

data(7)

Out

Reserved The PHY must drive this signal low

Table 95. Serial Mode Signal Map for 3-pin FsLs Serial Mode

Signal

Maps to

Direction

Description

tx_enable

data(0)

Active high transmit enable

dat

data(1)

I/O

Transmit differential data on D+/D– when tx_enable is high

Receive differential data on D+/D– when tx_enable is low

se0

data(2)

I/O

Transmit single-ended zero on D+/D– when tx_enable is high

Receive single-ended zero on D+/D– when tx_enable is low

int

data(3)

Out

Active high interrupt indication

Must be asserted whenever any unmasked interrupt occurs

Table 96. Signal Definitions—DAT_SE0 Bi-Directional Mode

Name

Direction

Signal Description

USB_TXOE_B

Out

Transmit enable, active low

USB_DAT_VP

Out

TX data when USB_TXOE_B is low

Differential RX data when USB_TXOE_B is high

USB_SE0_VM

Out

SE0 drive when USB_TXOE_B is low

SE0 RX indicator when USB_TXOE_B is high

Table 94. Serial Mode Signal Map for 6-pin FsLs Serial Mode (continued)

Signal

Maps to

Direction

Description

USB_DAT_VP

USB_SE0_VM

US1

US2

Transmit

US4

USB_TXOE_B

US3

PCIMX515CJM6C Datasheet(PDF) 129 Page - Freescale Semiconductor, Inc

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