Cmsemicon BAT32G1 9 Series, Руководство пользователя

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BAT32G1x9 user manual | Chapter 23 LCD bus interface
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23.3.3 LCB bus interface periodic control register (LBCYC).
LBCYC registers are used to control the cycle time of the LCD bus interface. The cycle time is the duration of
one 8-bit data transmission per bus access. LBCYC uses 8-bit memory manipulation instructions for setup.
When resetting, the LBCYC register resets to 00H
Figure 23-6 LCB bus interface periodic control register (LBCYC
).
Address: 0x40047401 Reset value
:
02H R/W
Symbol 7 6 5 4 3 2 1 0
LBCYC
CYC5-CYC0 Cycle time
000000B Disable settings
000001B
000010B
Cycle time: 2 T
000011B
Cycle time: 3 T
: :
111110B
Cycle time: 62 T
111111B
Cycle time: 63 T
Note: 1. T is the clock period of the selected clock (set by LBC1 and LBC0
).
2.
LBCYC≥2.
23.3.4 The LCB bus interface waits for control registers (LBWST).
LBWST is used to control the number of cycles in which the LCD bus interface waits for state. The number of
periods of wait state determines the duration of D B W R
————————
and DBRD
——————
signals. This duration must be shorter than
the cycle time.
LBWST is set using 8-bit memory manipulation instructions.
When resetting, lbWST resets to 00H.
Figure 23-7 The LCD bus interface waits for the format of the control register (LBWST
).
Address: 0x40047402 Reset value
:
00H R/W
Symbol 7 6 5 4 3 2 1 0
LBWST
WST4-WST0 Wait period
00000B The wait period is not inserted
00001B 1 T
00010B 2 T
00011B 3 T
: :
11110B 30 T
11111B 31 T
Note: 1.T is the clock period of the selected clock (set by LBC1 and LBC0).
2.
WST≤CYC-2.
0 0 CANDC5 CANDC4 CANDC3 CANDC2 CANDC1 CANDC0
0 0 0 WST4 WST3 WST2 WST1 WST0