MPC8280 datasheet(834/1386 Pages) FREESCALE

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Universal Serial Bus Controller

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

27-18

Freescale Semiconductor

27.5.7.2

USB Slave Address Register (USADR)

The USB address register is an 8-bit, memory-mapped register. It holds the address for this USB port when

operating as function.

Table 27-10 describes USADR fields.

27.5.7.3

USB Endpoint Registers (USEP1–USEP4)

There are four memory-mapped endpoint configuration registers.

Table 27-11 describes the fields of USEP1–USEP4. The setting for USB host controller should be set only

in USEP1, when USMOD[HOST] is set.

Field

—

SADx

Reset

0000_0000

R/W

Addr

0x11B61

Figure 27-11. USB Slave Address Register (USADR)

Table 27-10. USADR Fields

Bits

Name

Description

—

Reserved, should be cleared.

1–7

SADx

Slave address 0–6. Holds the slave address for the USB port, when configured as function

345

6789

Field

EPN

—

RTE

THS

RHS

Reset

0000_0000_0000_0000

R/W

Addr

0x11B64 (USEP1); 0x11B66 (USEP2); 0x11B68 (USEP3); 0x11B6A (USEP4)

Figure 27-12. USB Endpoint Registers (USEP1–USEP4)

Table 27-11. USEPx Field Descriptions

Bits

Name

USB Function Mode

USB Host Mode

0–3

EPN

Endpoint number. For USB function controller

defines the supported endpoint number.

For USB host controller, should be cleared

4–5

—

Reserved, should be cleared

6–7

Transfer mode for USB function controller

00 Control

01 Interrupt

10 Bulk

11 Isochronous

Transfer mode for USB host controller

00 Control /interrupt/bulk

11 Isochronous

8–9

—

Reserved, should be cleared.

Reserved, should be cleared

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