M66596FP datasheet(19/131 Pages) RENESAS

19 / 131 page

M66596FP/WG

rev .1.00

2006.3.14

page 19 of 127

System configuration status register [SYSSTS]

<Address: 02H>

LNST

Bit

Name

Function

S/W

H/W

Note

15-2

Nothing is placed here. These should be fixed at “0”.

1-0 LNST

USB data line status

Please see the detailed explanation concerning

this item.

2.3.3

<<Notes>>

None in particular

2.3.1

Selection of a function

The HSE and DCFM bit of the SYSCFG register should be used to select function of the controller. The

controller function selection table is shown in Table 2.3.

Table 2.3 The controller function selection

HSE

DCFM

Speed

Function

Note

Full

Peripheral

Full-Speed communication only.

Full

Host

Full-Speed communication only.

Full / Hi

Peripheral

The communication speed is based on the result of RHSP.

Full / Hi

Host

The communication speed is based on the result of RHSP.

* RHSP : Reset Handshake Protocol

2.3.2

USB block operation enabled

The USBE bit of the SYSCFG register should be used to enable USB block operation.

The same bit can be used to carry out an S/W reset of the controller. When software is set to “USBE=0”, the

controller resets the register targeted for S/W reset initialization to the default setting value. As long as

“USBE=0” is set, no data can be written by software to the bit targeted for S/W reset initialization. “USBE=1”

should be set following an S/W reset to enable controller operation.

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