Yamaha NP-S2000, Service Manual

Page: 45 / 87

Pin No. Port Name Function Name
Condition When Used
Detail of Function
I/O Logic
M25 nRESET VNP2_N_RST I L act System reset terminal
T25 XI_S – I Clock System clock crystal oscillation terminal
T24 XO_S – O Clock System clock crystal oscillation terminal
AE24 XI_A – I Clock A u dio clock crystal oscillation terminal
AD24 XO_A – O Clock
T22 TEST0 TEST0 I H act System reset terminal
R23 TEST1 – I H act
T23 TEST2 – I H act
L23 nSCS3 N_SCS3 O BUS Chip select 3
L24 nSCS2 N_SCS2 O BUS Chip select 2
K23 nSCS1 N_SCS1 O BUS
Chip select 1
FLASH_N_CS
L24 nSCS0 N_SCS0 O BUS Chip select 0
J23 nSLBE N_SLBE O BUS Lower byte enable
J24 nSUBE N_SUBE O BUS Upper byte enable
K25 nSWR N_SWE O BUS Write enable
J25 nSRD N_SRD O BUS Read enable
**
SA[22:0] SRA[22:0] O BUS External I/O address b u s
**
SD[15:0] SRD[15:0] B BUS External I/O data b u s
B1 SCLK0 SDRAM_CLK0 O Clock SDRAM clock enable
C1 SCKE0 SDRAM_CKE0 O H act SDRAM clock enable
D1 SCLK1 SDRAM_CLK1 O Clock SDRAM clock enable
E1 SCKE1 SDRAM_CKE1 O H act SDRAM clock enable
F1 nCS1 – O BUS SDRAM chip select 1
C2 nCS0 SDRAM_N_CS0 O BUS SDRAM chip select 0
E3 nWE SDRAM_N_WE O BUS SDRAM write enable
F2 nRAS SDRAM_N_RAS O BUS SDRAM row address strobe
E2 nCAS SDRAM_N_CAS O BUS SDRAM col u mn address strobe
A9 DQM3 SDRAM_DQM3 O BUS SDRAM data inp u t/O u tp u t mask 3
B9 DQM2 SDRAM_DQM2 O BUS SDRAM data inp u t/O u tp u t mask 2
C9 DQM1 SDRAM_DQM1 O BUS SDRAM data inp u t/O u tp u t mask 1
C10 DQM0 SDRAM_DQM0 O BUS SDRAM data inp u t/O u tp u t mask 0
**
A[12:0] SDRAM_A[11:0] O BUS SDRAM address b u s
J2 A13 SDRAM_BA0 O BUS SDRAM bank select BA0
J1 A14 SDRAM_BA1 O BUS SDRAM bank select BA1
**
D[31:0] SDRAM_DQ[31:0] B BUS SDRAM data b u s
45
NP-S20
0
0
NP-S2000