MPC8536E-ANDROID Freescale Semiconductor, MPC8536E-ANDROID Datasheet - Page 1308

• Manufacturer Part Number: MPC8536E-ANDROID
• Description: HARDWARE/SOFTWARE ANDROID OS
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536E-ANDROID

• Contents: Board
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Enhanced Secure Digital Host Controller
20.4.15 Watermark Level Register (WML)
Both write and read watermark levels are configurable. The value can be any number from 1–128 words.
20.4.16 Force Event Register (FEVT)
The force event register is not a physically implemented register. Rather, it is an address to which the
IRQSTAT register can be written if the corresponding bit of IRQSTATEN is set. Therefore, this register is
a write-only register and writing zero has no effect. Writing 1 to this register sets the corresponding bit of
IRQSTAT. Reading from this register always returns zeroes.
Forcing a card interrupt generates a short pulse on the SDHC_DAT[1] line, and the driver may treat this
interrupt as normal. The interrupt service routine may skip polling the card-interrupt source as the interrupt
is self-cleared.
20-34
Reset
Offset: 0x044 (WML)
WR_WML
13–15
16–31
RD_WML
Field
MBL
16–23
24–31
Field
8–15
W
0–7
R
0
0
0
Max block length. Indicates the maximum block size that the host driver can read and write to the buffer in the
eSDHC. The buffer should transfer block size without wait cycles.
000 512 bytes
001 1024 bytes
010 2048 bytes
011 4096 bytes
Reserved
0
Reserved
Write watermark level. Number of 32-bit words of watermark level in DMA write operation. Also, the number
of words of write burst length.
Note: The minimum value is 0x02, which represents 2 words (8 bytes).
Reserved
Read watermark level. Number of 32-bit words of watermark level in DMA read operation. Also, the number
of words of read burst length.
Note: The minimum value for RD_WML is 0x02, which means 2 words (8 bytes), and the maximum value
0
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
—
0
for RD_WML is 0x10, which means 16 words (64 bytes). Setting RD_WML to values outside this
range results in non-predicted behavior.
Table 20-22. HOSTCAPBLT Field Descriptions (continued)
0
0
Figure 20-17. Watermark Level Register (WML)
0
7
0
8
Table 20-23. WML Field Descriptions
0
0
WR_WML
1
0
0
0
Description
15 16
0
Description
0
0
0
0
—
0
0
0
23 24
0
0
Freescale Semiconductor
0
0
Access: Read/Write
RD_WML
1
0
0
0
31
0