參數(shù)資料
型號(hào): SPMC916X1CTH16
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP120
封裝: QFP-120
文件頁(yè)數(shù): 11/172頁(yè)
文件大?。?/td> 1200K
代理商: SPMC916X1CTH16
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MOTOROLA
MC68HC916X1
108
MC68HC916X1TS/D
SPCR0 contains parameters for configuring the QSPI before it is enabled. The CPU can read and
write this register. The QSM has read-only access.
MSTR — Master/Slave Mode Select
0 = QSPI is a slave device and only responds to externally generated serial data.
1 = QSPI is system master and can initiate transmission to external SPI devices.
MSTR configures the QSPI for either master or slave mode operation. This bit is cleared on reset and
may only be written by the CPU.
WOMQ — Wired-OR Mode for QSPI Pins
0 = Outputs have normal MOS drivers.
1 = Pins designated for output by DDRQS have open-drain drivers.
WOMQ allows the wired-OR function to be used on QSPI pins, regardless of whether they are used as
general-purpose outputs or as QSPI outputs. WOMQ affects the QSPI pins regardless of whether the
QSPI is enabled or disabled.
BITS[3:0] — Bits Per Transfer
In master mode, when BITSE in a command is set, the BITS[3:0] field determines the number of data
bits transferred. When BITSE is cleared, eight bits are transferred. Reserved values default to eight bits.
In slave mode, the command RAM is not used and the setting of BITSE has no effect on QSP1 trans-
fers. Instead, the BITS[3:0] field determines the number of bits the QSPI will receive during each trans-
fer before storing the received data.
Table 59 shows the number of bits per transfer.
SPCR0 — QSPI Control Register 0
$YFFC18
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MSTR WOMQ
BITS[3:0]
CPOL CPHA
SPBR[7:0]
RESET:
0
1
0
1
0
Table 59 Bits Per Transfer
BITS[3:0]
Bits per Transfer
0000
16
0001
Reserved
0010
Reserved
0011
Reserved
0100
Reserved
0101
Reserved
0110
Reserved
0111
Reserved
1000
8
1001
9
1010
10
1011
11
1100
12
1101
13
1110
14
1111
15
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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