SIO1007 datasheet(62/108 Pages) MICROCHIP

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SIO1007

DS00002020A-page 62

 2005 - 2015 Microchip Technology Inc.

18.4.5

CR04

CR04 can only be accessed in the configuration state and after the CSR has been initialized to 04H.

Note 18-5

MIDI Support: The Musical Instrumental Digital Interface (MIDI) operates at 31.25Kbaud (+/-1%).

18.4.6

CR05

18.4.7

CR06

18.4.8

CR07

CR07 can only be accessed in the configuration state and after the CSR has been initialized to 07H. CR07 controls auto

power management.

18.4.9

CR08

TABLE 18-7:

CR04

UART Miscellaneous

Type: R/W

Default: 0X00 ON VCC POR

BIT NO.

BIT NAME

DESCRIPTION

3:0

Read Only. A read returns “0”.

4MIDI 1 (Note 18-5)

Serial Clock Select Port 1: A low level on this bit disables MIDI support

(default). A high level on this bit enables MIDI support.

5MIDI 2 (Note 18-5)

Serial Clock Select Port 2: A low level on this bit disables MIDI support

(default). A high level on this bit enables MIDI support.

7:6

Read Only. A read returns “0”.

TABLE 18-8:

CR07

Auto Power Management and Boot Drive Select

Type: R/W

Default: 0X00 ON VCC POR;

BITS[6:5] = 00 ON PCI RESET

BIT NO.

BIT NAME

DESCRIPTION

4:0

Reserved

Read Only. A read returns 0.

UART 2 Enable

This bit controls the AUTOPOWER DOWN feature of the UART2. The

function is:

0 = Auto powerdown disabled (default)

1 = Auto powerdown enabled

This bit is reset to the default state by POR or a hardware reset.

UART 1 Enable

This bit controls the AUTOPOWER DOWN feature of the UART1. The

function is:

0 = Auto powerdown disabled (default)

1 = Auto powerdown enabled

This bit is reset to the default state by POR or a hardware reset.

Reserved

Read Only. A read returns 0.

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