SYS68K/CPU-30 R4 Technical Reference Manual
Hardware Description
Page 43
The encoding of these bits is shown in the table below.
CAUTION: Writes to the System Flash Memory must always be
performed with a 4-byte wide port size and must be aligned on 4-byte
boundaries.
3.5.4
Programming
the System
Flash Memory
For correct programming, a communication sequence to the Flash
devices must be used which is defined by the manufacturer of the Flash
device.
SEE ALSO: For further details, please refer to the data sheets for Flash
devices in Section 4, ‘Circuit Schematics and Data Sheets,’ on page 115.
This communication sequence has to be performed on every byte path.
Besides the communication sequence, a programming voltage Vpp of
12V must be applied to the Flash device. The Vpp is generated by the
CPU-30 R4 and is controlled by PI/T #2.
CAUTION: PI/T #2 pin PC6 must be programmed as an output.
The Vpp generator is shared between the System Flash Memory and the
default Boot PROM socket.
PC4
Function
0
Write to System Flash Memory unprotected
1
Write to System Flash Memory protected
PC6
Function
0
Vpp on
1
Vpp off
☞
Содержание SYS68K/CPU-30 R4
Страница 41: ...Installation SYS68K CPU 30 R4 Technical Reference Manual Page 28...
Страница 127: ...Hardware Description SYS68K CPU 30 R4 Technical Reference Manual Page 114...
Страница 130: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 117 4 2 1 RTC 72421...
Страница 131: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 118 4 2 2 DUSCC 68562...
Страница 132: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 119 4 2 3 PI T TS68230...
Страница 133: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 120 4 2 4 SCSI 87033 34...
Страница 134: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 121 4 2 5 FDC37C65C...
Страница 135: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 122 4 2 6 LANCE Am79C90...
Страница 136: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 123 4 2 7 SIA Am7992B...
Страница 137: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 124 4 2 8 Motorola MC68030 and MC68882...
Страница 145: ...VMEPROM SYS68K CPU 30 R4 Technical Reference Manual Page 132...
Страница 189: ...Appendix to VMEPROM SYS68K CPU 30 R4 Technical Reference Manual Page 176...