PCIMX515CJM6C datasheet(128/184 Pages) FREESCALE

128 / 184 page

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

128

Freescale Semiconductor

Preliminary—Subject to Change Without Notice

Electrical Characteristics

3.7.16

UART

Table 93 shows the UART I/O configuration based on which mode is enabled.

3.7.17

USBOH3 Parameters

This section describes the electrical parameters of the USB OTG port and USB HOST ports. For on-chip

USB PHY parameters see Section 3.7.19, “USB PHY Parameters.”

3.7.17.1

USB Serial Interface

In order to support four serial different interfaces, the USB serial transceiver can be configured to operate

in one of four modes:

•

DAT_SE0 bidirectional, 3-wire mode

•

DAT_SE0 unidirectional, 6-wire mode

•

VP_VM bidirectional, 4-wire mode

•

VP_VM unidirectional, 6-wire mode

The USB controller does not support ULPI Serial mode. Only the legacy serial mode is supported.

Table 93. UART I/O Configuration vs. Mode

Port

DTE Mode

DCE Mode

Direction

Description

Direction

Description

RTS

Output

RTS from DTE to DCE

Input

RTS from DTE to DCE

CTS

Input

CTS from DCE to DTE

Output

CTS from DCE to DTE

DTR

Output

DTR from DTE to DCE

Input

DTR from DTE to DCE

DSR

Input

DSR from DCE to DTE

Output

DSR from DCE to DTE

DCD

Input

DCD from DCE to DTE

Output

DCD from DCE to DTE

Input

RING from DCE to DTE

Output

RING from DCE to DTE

TXD_MUX

Input

Serial data from DCE to DTE

Output

Serial data from DCE to DTE

RXD_MUX

Output

Serial data from DTE to DCE

Input

Serial data from DTE to DCE

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

Signal

Maps to

Direction

Description

tx_enable

data(0)

Active high transmit enable

tx_dat

data(1)

Transmit differential data on D+/D–

tx_se0

data(2)

Transmit single-ended zero on D+/D–

int

data(3)

Out

Active high interrupt indication

Must be asserted whenever any unmasked interrupt occurs

rx_dp

data(4)

Out

Single-ended receive data from D+

rx_dm

data(5)

Out

Single-ended receive data from D–

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