参数资料
型号: USB-I2C/LIN-CONV-Z
厂商: Analog Devices Inc
文件页数: 85/104页
文件大小: 0K
描述: USB TO I2C/LIN CONV BOARD
标准包装: 1
附件类型: 适配器板
适用于相关产品: ARM7TDMI?
Data Sheet
ADuC7019/20/21/22/24/25/26/27/28/29
Rev. F | Page 81 of 104
Table 148. PLACLK Register
Name
Address
Default Value
Access
PLACLK
0xFFFF0B40
0x00
R/W
PLACLK is the clock selection for the flip-flops of Block 0 and
Block 1. Note that the maximum frequency when using the
GPIO pins as the clock input for the PLA blocks is 44 MHz.
Table 149. PLACLK MMR Bit Descriptions
Bit
Value
Description
7
Reserved.
6:4
Block 1 clock source selection.
000
GPIO clock on P0.5.
001
GPIO clock on P0.0.
010
GPIO clock on P0.7.
011
HCLK.
100
OCLK (32.768 kHz) external crystal only.
101
Timer1 overflow.
Other
Reserved.
3
Reserved.
2:0
Block 0 clock source selection.
000
GPIO clock on P0.5.
001
GPIO clock on P0.0.
010
GPIO clock on P0.7.
011
HCLK.
100
OCLK (32.768 kHz) external crystal only.
101
Timer1 overflow.
Other
Reserved.
Table 150. PLAIRQ Register
Name
Address
Default Value
Access
PLAIRQ
0xFFFF0B44
0x00000000
R/W
PLAIRQ enables IRQ0 and/or IRQ1 and selects the source
of the IRQ.
Table 151. PLAIRQ MMR Bit Descriptions
Bit
Value
Description
15:13
Reserved.
12
PLA IRQ1 enable bit. Set by user to enable
IRQ1 output from PLA. Cleared by user to
disable IRQ1 output from PLA.
11:8
PLA IRQ1 source.
0000
PLA Element 0.
0001
PLA Element 1.
1111
PLA Element 15.
7:5
Reserved.
4
PLA IRQ0 enable bit. Set by user to enable
IRQ0 output from PLA. Cleared by user to
disable IRQ0 output from PLA.
3:0
PLA IRQ0 source.
0000
PLA Element 0.
0001
PLA Element 1.
1111
PLA Element 15.
Table 152. Feedback Configuration
Bit
Value
PLAELM0
PLAELM1 to PLAELM7
PLAELM8
PLAELM9 to PLAELM15
10:9
00
Element 15
Element 0
Element 7
Element 8
01
Element 2
Element 10
10
Element 4
Element 12
11
Element 6
Element 14
8:7
00
Element 1
Element 9
01
Element 3
Element 11
10
Element 5
Element 13
11
Element 7
Element 15
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