30-32
MC9328MX1 Reference Manual
MOTOROLA
Synchronous Serial Interface (SSI)
RFWM
Bits 7–4
Receive FIFO Full
Water Mark
—
Specifies the Receive
FIFO Water Mark.
When the data level of
the receive FIFO
reaches the Water
Mark level, the RFF bit
in the SCSR is set.
0000 = Reserved
0001 = RFF sets when at least one data word is written to the receive FIFO
(RFCNT = 1, 2, 3, 4, 5, 6, 7, 8 data words)
0010 = RFF sets when 2 or more data words are written to the receive FIFO
(RFCNT = 2, 3, 4, 5, 6, 7, 8 data words)
0011 = RFF sets when 3 or more data words are written to the receive FIFO
(RFCNT = 3, 4, 5, 6, 7, 8 data words)
0100 = RFF sets when 4 or more data words are written to the receive FIFO
(RFCNT = 4, 5, 6, 7, 8 data words)
0101 = RFF sets when 5 or more data words are written to the receive FIFO
(RFCNT = 5, 6, 7, 8 data words)
0110 = RFF sets when 6 or more data words are written to the receive FIFO
(RFCNT = 6, 7, 8 data words)
0111 = RFF sets when 7 or more data words are written to the receive FIFO
(RFCNT = 7, 8 data words)
1000 = RFF sets when exactly 8 data words are written to the receive FIFO
(RFCNT = 8 data words)
All other settings reserved
TFWM
Bits 3–0
Transmit FIFO
Empty Water Mark
—
Specifies the Transmit
FIFO Water Mark.
When the data level of
the transmit FIFO falls
below the Water Mark
level, the TFE bit in
the SCSR is set.
0000 = Reserved
0001 = TFE sets when there are 1 or more empty slots in the transmit FIFO
(TFCNT = 7, 6, 5, 4, 3, 2, 1, 0 data words)
0010 = TFE sets when there are 2 or more empty slots in the transmit FIFO
(TFCNT = 6, 5, 4, 3, 2, 1, 0 data words)
0011 = TFE sets when there are 3 or more empty slots in the transmit FIFO
(TFCNT = 5, 4, 3, 2, 1, 0 data words)
0100 = TFE sets when there are 4 or more empty slots in the transmit FIFO
(TFCN = 4, 3, 2, 1, 0 data words)
0101 = TFE sets when there are 5 or more empty slots in the transmit FIFO
(TFCNT = 3, 2, 1, 0 data words)
0110 = TFE sets when there are 6 or more empty slots in the transmit FIFO
(TFCNT = 2, 1, 0 data words)
0111 = TFE sets when there are 7 or more empty slots in the transmit FIFO
(TFCNT = 1, 0 data words)
1000 = TFE sets when there are 8 empty slots are in the transmit FIFO
(TFCNT = 0 data words)
All other settings reserved
Table 30-19. SSI FIFO Control/Status Register Description (Continued)
Name
Description
Settings
Summary of Contents for DragonBall MC9328MX1
Page 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Page 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Page 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Page 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Page 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Page 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Page 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Page 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Page 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Page 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Page 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Page 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Page 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Page 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Page 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Page 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Page 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Page 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Page 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...