DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 227

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

HC11HOSTLD
I8051HOSTLD
Freescale Semiconductor
bra<HI08CONT
movep#%0000001000011000,x:M_HPCR
bra<HI08CONT
movep#%0001110000011110,x:M_HPCR
; Configure the following conditions:
; HAP= 0 Negative host acknowledge
; HRP= 0 Negative host request
; HCSP= 0 Negative chip select input
; HD/HS= 0 Single strobe bus (R/W~ and DS strobes)
; HMUX= 0 Non multiplexed bus
; HASP= 0 (address strobe polarity has no meaning in
;
; HDSP= 1 Positive data strobes polarity
; HROD= 0 Host request is active when enabled
; spare = 0 This bit should be set to 0 for future
;
; HEN= 0 When the HPCR register is modified HEN should be
;
; HAEN= 0 Host acknowledge is disabled
; HREN= 1 Host requests are enabled
; HCSEN = 1 Host chip select input enabled
; HA9EN= 0 (address 9 enable bit has no meaning in
;
; HA8EN= 0 (address 8 enable bit has no meaning in
;
; HGEN= 0 Host GPIO pins are disabled
; Configure the following conditions:
; HAP= 0 Negative host acknowledge
; HRP= 0 Negative host request
; HCSP= 0 Negative chip select input
; HD/HS= 1 Dual strobes bus (RD and WR strobes)
; HMUX= 1 Multiplexed bus
; HASP= 1 Positive address strobe polarity
; HDSP= 0 Negative data strobes polarity
; HROD= 0 Host request is active when enabled
; spare = 0 This bit should be set to 0 for future
;
; HEN= 0 When the HPCR register is modified HEN
;
; HEN
;
; HAEN
; HREN
; HCSEN = 1 Host chip select input enabled
; HA9EN
;
; HA8EN
;
; HGEN
compatibility
should be cleared
non-multiplexed bus)
non-multiplexed bus)
non-multiplexed bus)
cleared
compatibility
HEN should be cleared
= 0 When the HPCR register is modified
= 0 Host acknowledge is disabled
= 1 Host requests are enabled
= 0 (address 9 enable bit has no meaning in
= 0 (address 8 enable bit has no meaning in
= 0 Host GPIO pins are disabled
non-multiplexed bus)
non-multiplexed bus)
DSP56303 User’s Manual, Rev. 2
Bootstrap Code
A-5