PAW3702DL-TXNT Datasheet, PDF (14/33 Pages) Pixart Imaging Inc. – 3in1 SOC Low Power 2.4GHz Wireless Optical Mouse

PixArt Imaging Inc.
PAR2402QK-RB General Datasheet
2.4GHz Wireless Receiver for USB Dongle
4.4 Interface
4.4.1 UART
The PAR2402 has one set of UART interface for serial asynchronous communication between devices. 8-n-1 is standard data
frame configuration as eight (8) data bits, no (N) parity bit, and one (1) stop bit shown figure below.
UART-TX
S
S
UART-TX ^{Figure 5. UART Data Frame}
Table 11. UART Characteristics
UART-TX
Parameters
Symbol
Baud Rate
BR
Baud Rate Accuracy
BRACCU
Min.
1200
Typ.
Max. Unit
57600 bps
0.64
%
Conditions
4.4.2 SPI
The PAR2402 provides 2-wire SPI interface, SCLK (clock), SDIO (bi-directional Data). The PAR2402 serves as a slave device.
One SPI command consists of two bytes: 1^st byte is address phase, 2^nd byte is data phase.
SCLK
1
2
3
4
5
6
7
8
9 10 11 12 13 14 ^{15 16}
SDIO
A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
WRITE
don't care
don't care
Figure 6. Write Command: Wr(1-bit), Address(7-bits), Data(8-bits)
SCLK
1
2
3
4
5
6
7
8
9 10 11 12 13 14 ^{15 16}
SDIO
READ _{A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0}
Hi-Z
don't care
don't care
SDIO driven by the PAR2402
Figure 7. Read Command: Rd(1-bit), Address(7-bits), Data(8-bits)
Version 0.6 | 17 June 2016 | A1003AEN
PixArt Imaging Inc. http://www.pixart.com
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