MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 874

• Manufacturer Part Number: MCIMX281AVM4B
• Description: IC MPU I.MX28 1.2 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX281AVM4B

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 454MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Program Memory Size: 128KB (32K x 32)
• Program Memory Type: Mask ROM
• Ram Size: 32K x 32
• Voltage - Supply (vcc/vdd): 1.25 V ~ 5.25 V
• Data Converters: A/D 17x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 289-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Programmable Registers
10.8.14 General-Purpose Media Interface Clock Control Register
This register controls the divider that generates the General-Purpose Media Interface (GPMI)
clock, CLK_GPMI. Note: Do not write register space when busy bit(s) are high.
EXAMPLE
HW_CLKCTRL_GPMI_WR(BF_CLKCTRL_GPMI_DIV(40));
Address:
874
Reset
Reset
CLKGATE
Bit
Bit
W
W
R
R
Field
Field
8 0
DIV
31
31
15
1
0
HW_CLKCTRL_GPMI
(HW_CLKCTRL_GPMI)
30
14
0
0
RSRVD1[15:11]
The synchronous serial port clock frequency is determined by dividing the selected reference clock (ref_xtal
or ref_io) by the value in this bit field. This field can be programmed with a new value only when CLKGATE
= 0.
NOTE: The divider is set to divide by 1 at power-on reset. Do NOT divide by 0.
CLK_GPMI Gate. If set to 1, CLK_GPMI is gated off. 0: CLK_GPMI is not gated. When this bit is modified,
or when it is high, the DIV field should not change its value. The DIV field can change ONLY when this clock
gate bit field is low.
BUSY
29
13
0
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
HW_CLKCTRL_SSP3 field descriptions (continued)
28
12
0
0
HW_CLKCTRL_GPMI field descriptions
8004_0000h base + D0h offset = 8004_00D0h
27
11
0
0
26
10
0
0
25
0
0
9
24
0
0
8
Description
Description
23
RSRVD1[28:16]
0
0
7
22
0
0
6
21
0
5
0
DIV
20
0
4
0
Freescale Semiconductor, Inc.
19
0
0
3
18
0
0
2
17
0
0
1
16
0
1
0