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MEC1322 Datasheet(PDF) 409 Page - Microchip Technology

Part # MEC1322
Description  Keyboard and Embedded Controller for Notebook PC
PDF  456 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MEC1322 Datasheet(HTML) 409 Page - Microchip Technology

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 2014 - 2015 Microchip Technology Inc.
DS00001719D-page 409
MEC1322
t11
DATA output by MEC1322 following the
falling edge of CLK. The auxiliary periph-
eral device samples DATA following the ris-
ing edge of CLK.
1.0
µs
t12
Rising edge following the 11th falling clock
edge to PS_T/R bit driven low.
3.5
7.1
µs
t13
Trailing edge of PS_T/R to XMIT_IDLE bit
asserted.
500
ns
t14
DATA released to high-Z following the
PS2_T/R bit going low.
t15
XMIT_IDLE bit driven high to interrupt gen-
erated.
Note1- Interrupt is cleared by writing a 1 to
the status bit in the GIRQ17 source regis-
ter.
t17
Trailing edge of CLK is held low prior to
going high-Z
FIGURE 38-16:
PS/2 RECEIVE TIMING
TABLE 38-14: PS/2 CHANNEL TRANSMISSION TIMING PARAMETERS (CONTINUED)
Name
Description
MIN
TYP
MAX
Units
t6
t5
t4
t3
t2
t7
t1
t8
t9
t10
t12
t11
RDATA_RDY
Interrupt
PS2_EN
Read Rx Reg
D3
D0
D2
D5
D4
D6
D7
P
S
D1
PS2_DATA
PS2_CLK
PS2_T/R



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