Freescale Semiconductor MPC5200B ユーザーズマニュアル
MPC5200B Users Guide, Rev. 1
7-40
Freescale Semiconductor
General Purpose I/O (GPIO)
7.3.2.1.8
GPS GPIO Output-Only Data Value Out Register —MBAR + 0x0B1C
Bit
Name
Description
0:7
ETHR
Individual bits to enable each Output Only GPIO pin—all reside on the Ethernet port.
bit 0 controls GPIO_ETHO_7 (ETH_7 pin)
bit 1 controls GPIO_ETHO_6 (ETH_6 pin)
bit 2 controls GPIO_ETHO_5 (ETH_5 pin)
bit 3 controls GPIO_ETHO_4 (ETH_4 pin)
bit 4 controls GPIO_ETHO_3 (ETH_3 pin)
bit 5 controls GPIO_ETHO_2 (ETH_2 pin)
bit 6 controls GPIO_ETHO_1 (ETH_1 pin)
bit 7 controls GPIO_ETHO_0 (ETH_0 pin)
0 = Disabled for GPIO use (default)
1 = Enabled for GPIO use
8 :11
—
Reserved
12:15
I2C
Individual bits to enable each Output Only GPIO pin—all reside on the I2C ports.
bit 12 controls I2C2_CLK (I2C_2 pin)
bit 13 controls I2C2_IO (I2C_3 pin)
bit 14 controls I2C1_CLK (I2C_0 pin)
bit 15 controls I2C1_IO (I2C_1 pin)
0 = Disabled for GPIO use (default)
1 = Enabled for GPIO use
This bits can be used to toggle the clock (SCL) and data (SDA) lines of the I2C interface.
16:31
—
Reserved
Table 7-28. GPS GPIO Output-Only Data Value Out Register
msb 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
ETHR
Reserved
I2C
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 lsb
R
Reserved
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0