參數(shù)資料
型號: QT60161B
廠商: Electronic Theatre Controls, Inc.
英文描述: 16 KEY QMATRIX KEYPANEL SENSOR IC
中文描述: 16個(gè)主要QMATRIX KEYPANEL傳感器IC
文件頁數(shù): 14/36頁
文件大小: 683K
代理商: QT60161B
4.5 UART Interface
Refer to Figures 4-1 and 4-5.
UART communications requires only 2 wires, TX and RX to
communicate with a host device. All communications must be
initiated by the host. The baud rate is determined by Setup
^Q (page 25); the maximum baud rate with a 12MHz oscillator
is 57.6K. UART communications uses the following settings
:
Quantum Research Group Ltd.
l
Q
14
www.qprox.com QT60161B / R1.03
Table 4-1 Typical Tdr1 Response Delays (100μs sample ramp)
350μs
350μs
350μs
All other commands
350μs
350μs
350μs
Get keys pushed (K)
450μs
450μs
450μs
Get key errors (E)
500μs
500μs
500μs
Calibrate command (all keys)
65ms
65ms
65ms
Lock reference Level (L)
65ms
65ms
65ms
Setup - Put (affect 16 keys)
20ms
20ms
20ms
Setup - Put (affect 8 keys)
10ms
10ms
10ms
Setup - Put (affect 1 key)
2ms
1ms
500μs
F
un
c
tion
Ty
pe
B
urst Spa
c
in
g
Figure 4-5 UART Timing
RX
{from host}
Optional Byte 2
from host to sensor
Command Byte 1
from host to sensor
Tdr1
Response Byte or Echo
from sensor to host
Nth Byte from sensor
{N = command dependent}
Tcm
7
6
5
4
3
2
1
0
S
TX
{from sensor}
7
6
5
4
3
2
1
0
S
7
6
5
4
3
2
1
0
S
7
6
5
4
3
2
1
0
S
Tdr3
Figure 4-4 SPI Master/Slave Mode Timing
SCK
MOSI
Optional Byte 2
from host to sensor
Command Byte 1
from Host to sensor
SS
Tdr1
Response Byte or Echo
from sensor to host
Nth Byte from sensor
{N = command dependent}
SS, SCK, MOSI originate from Host
SS, SCK, MOSI originate from sensor
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
Floating
Tcm
Tdr3
Figure 4-3 SPI Slave-Only Mode Timing
SCK
{from host}
MOSI
{from host}
MISO
{from sensor}
Invalid Data
Optional Byte 2
Host Command Byte 1
Null Dummy Data
Null Dummy Data
Invalid Data
Response Data or Echo
Nth Response Data
{N = command dependent}
DRDY
{from sensor}
SS
{from host}
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
Tdr1
Tcm
Tdr2
Tdr3
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