MEC1632 datasheet(25/636 Pages) MICROCHIP

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DS00001592B-page 25

MEC1632

3.5.10

MISCELLANEOUS FUNCTIONS

TABLE 3-15:

MISCELLANEOUS FUNCTIONS

Note 3-5

The KBRST pin function is the output of CPU_RESET described in Section 10.14, "CPU_RESET

Hardware Speed-Up," on page 203.

Note 3-6

When the CLK_SRC bit is ‘1’ in the UARTConfiguration Select register (See page 238), the baud

clock is externally sourced from the UART_CLK pin. UART_CLK requires a frequency of 1.8432

MHz

± 2%.

Note 3-7

The nRESET_OUT pin function is an external output signal version of the internal signal

nSIO_RESET. See the iRESET OUT bit in the Block Sleep Enable Registers on page 136.

3.5.11

PS/2 INTERFACE

TABLE 3-16:

PS/2 INTERFACE

MISC Functions

(17 Pins)

Pin Ref. Number

Signal Name

Description

Notes

151

A20M

KBD GATEA20 Output

KBRST

CPU_RESET

162

LED0

LED Output 1

Note 9

163

LED1

LED Output 2

Note 9

164

LED2

LED Output 3

Note 9

121

MSCLK

Microchip Proprietary EC debug port

122

MSDATA

Microchip Proprietary EC debug port

UART_CLK

UART CLK input

135

UART_RX

UART RX Input

Note 4

134

UART_TX

UART TX Output

Note 4

VCC_PWRGD

System Main Power Indication

Note 8

RC_ID

RC Identification Detection

RESETI#

System Reset Input

RESETO#

System Reset Output

Note 7

153

CEC_IN

HDMI-CEC control bus input

152

CEC_OUT

HDMI-CEC control bus output

nRESET_OUT

EC-driven External System Reset

PS/2 Interface

(10 Pins)

Pin Ref. Number

Signal Name

Description

Notes

140

PS2_CLK0B

PS/2 clock ouput

Note 6

141

PS2_DAT0B

PS/2 data

Note 6

103

PS2_CLK2

PS/2 clock ouput

104

PS2_DAT2

PS/2 data

105

PS2_CLK1A

PS/2 clock ouput

Note 6

106

PS2_DAT1A

PS/2 data

Note 6

107

PS2_CLK0A

PS/2 clock ouput

Note 6

108

PS2_DAT0A

PS/2 data

Note 6

142

PS2_CLK1B

PS/2 clock ouput

Note 6

143

PS2_DAT1B

PS/2 data

Note 6

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